diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 00000000..547b5c22
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,15 @@
+language: php
+php:
+    - '7.0'
+sudo: false
+cache:
+  directories:
+      - $HOME/cachedir
+install: git clone --depth 1 https://github.com/sstephenson/bats.git $HOME/bats
+before_script:
+  - 'git config --global user.email "travis@localhost" && git config --global user.name "Travis CI"'
+  - "export LOCAL_CI_TESTS_CACHEDIR=$HOME/cachedir && mkdir -p $LOCAL_CI_TESTS_CACHEDIR"
+  - "export LOCAL_CI_TESTS_GITDIR=$HOME/gitdir && git clone git://github.com/moodle/moodle $LOCAL_CI_TESTS_GITDIR"
+script:
+  - $HOME/bats/bin/bats tests
+
diff --git a/README.md b/README.md
index 31ab5407..285f5f8b 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # CI local plugin
 
+[![Build Status](https://travis-ci.org/moodlehq/moodle-local_ci.svg?branch=master)](https://travis-ci.org/moodlehq/moodle-local_ci)
+
 This local_ci plugin contains all the scripts needed
 by Moodle CI servers to automate checks while
 integration happens.
diff --git a/tests/00-setup.bats b/tests/00-setup.bats
new file mode 100755
index 00000000..0808691f
--- /dev/null
+++ b/tests/00-setup.bats
@@ -0,0 +1,9 @@
+#!/usr/bin/env bats
+
+load libs/shared_setup
+
+# This test is just used as some quick output because some tests are v.slow
+@test "Git is setup for tests." {
+    [ -d "$gitdir/.git" ];
+    assert_success
+}
diff --git a/tests/01-php_lint.bats b/tests/01-php_lint.bats
new file mode 100755
index 00000000..3f00aa0f
--- /dev/null
+++ b/tests/01-php_lint.bats
@@ -0,0 +1,40 @@
+#!/usr/bin/env bats
+
+load libs/shared_setup
+
+setup () {
+    create_git_branch MOODLE_31_STABLE v3.1.0
+
+    export extrapath=.
+}
+
+@test "php_lint: lib/moodlelib.php lint free" {
+    cd $gitdir
+    export GIT_PREVIOUS_COMMIT=$($gitcmd rev-parse HEAD)
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/31-php_lint-ok.patch
+    export GIT_COMMIT=$($gitcmd rev-parse HEAD)
+
+    cd $BATS_TEST_DIRNAME/../php_lint/
+    run ./php_lint.sh
+    assert_success
+    assert_output --partial "Running php syntax check from $GIT_PREVIOUS_COMMIT to $GIT_COMMIT"
+    assert_output --partial "lib/moodlelib.php - OK"
+    assert_output --partial "No PHP syntax errors found"
+}
+
+@test "php_lint: lib/moodlelib.php lint error detected" {
+    cd $gitdir
+    export GIT_PREVIOUS_COMMIT=$($gitcmd rev-parse HEAD)
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/31-php_lint-bad.patch
+    export GIT_COMMIT=$($gitcmd rev-parse HEAD)
+
+    # Run test
+    cd $BATS_TEST_DIRNAME/../php_lint/
+    run ./php_lint.sh
+
+    # Assert result
+    assert_failure
+    assert_output --partial "Running php syntax check from $GIT_PREVIOUS_COMMIT to $GIT_COMMIT"
+    assert_output --partial "lib/moodlelib.php - ERROR:"
+    assert_output --regexp "PHP syntax errors found."
+}
diff --git a/tests/01-thirdparty_check.bats b/tests/01-thirdparty_check.bats
new file mode 100755
index 00000000..5972fab4
--- /dev/null
+++ b/tests/01-thirdparty_check.bats
@@ -0,0 +1,38 @@
+#!/usr/bin/env bats
+
+load libs/shared_setup
+
+setup () {
+    create_git_branch MOODLE_31_STABLE v3.1.0
+
+    export extrapath=.
+}
+
+@test "thirdparty_check: thirdpartyfile modified OK" {
+    cd $gitdir
+    export initialcommit=$($gitcmd rev-parse HEAD)
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/31-thirdparty-ok.patch
+    export finalcommit=$($gitcmd rev-parse HEAD)
+
+    cd $BATS_TEST_DIRNAME/../thirdparty_check/
+    run ./thirdparty_check.sh
+    assert_success
+    assert_output --partial "INFO: Checking for third party modifications from $initialcommit to $finalcommit"
+    assert_output --partial "INFO: Detected third party modification in lib/amd/src/mustache.js"
+    assert_output --partial "INFO: OK lib/thirdpartylibs.xml modified"
+    refute_output --partial "WARN:"
+}
+
+@test "thirdparty_check: thirdpartyfile modified without update" {
+    cd $gitdir
+    export initialcommit=$($gitcmd rev-parse HEAD)
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/31-thirdparty-error.patch
+    export finalcommit=$($gitcmd rev-parse HEAD)
+
+    cd $BATS_TEST_DIRNAME/../thirdparty_check/
+    run ./thirdparty_check.sh
+    assert_success # TODO, this should be fixed!
+    assert_output --partial "INFO: Checking for third party modifications from $initialcommit to $finalcommit"
+    assert_output --partial "INFO: Detected third party modification in lib/amd/src/mustache.js"
+    assert_output --partial "WARN: modification to third party library (lib/amd/src/mustache.js) without update to lib/thirdpartylibs.xml or lib/amd/src/readme_moodle.txt"
+}
diff --git a/tests/02-less_checker.bats b/tests/02-less_checker.bats
new file mode 100755
index 00000000..91f6a9f0
--- /dev/null
+++ b/tests/02-less_checker.bats
@@ -0,0 +1,30 @@
+#!/usr/bin/env bats
+
+load libs/shared_setup
+
+
+setup () {
+    create_git_branch MOODLE_27_STABLE v2.7.14
+
+    export extrapath=.
+    # Setup recess base.
+    export recessbase=$LOCAL_CI_TESTS_CACHEDIR/recess
+    mkdir -p $recessbase
+}
+
+@test "less_checker: normal" {
+    cd $BATS_TEST_DIRNAME/../less_checker/
+    run ./less_checker.sh
+    assert_success
+    assert_output --partial "OK: All .less files are perfectly compiled and matching git contents"
+}
+
+@test "less_checker: uncommitted less change" {
+    cd $gitdir
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/27-less-unbuilt.patch
+    cd $BATS_TEST_DIRNAME/../less_checker/
+    run ./less_checker.sh
+    assert_failure
+    assert_output --partial "ERROR: Some .less files are not matching git contents. Changes detected:"
+    assert_output --partial "theme/bootstrapbase/style/moodle.css"
+}
diff --git a/tests/99-grunt_process.bats b/tests/99-grunt_process.bats
new file mode 100755
index 00000000..6a7a4808
--- /dev/null
+++ b/tests/99-grunt_process.bats
@@ -0,0 +1,70 @@
+#!/usr/bin/env bats
+
+load libs/shared_setup
+
+
+setup () {
+    create_git_branch MOODLE_31_STABLE v3.1.0
+
+    export extrapath=.
+}
+
+@test "grunt_process: normal" {
+    cd $BATS_TEST_DIRNAME/../grunt_process/
+    run ./grunt_process.sh
+    assert_success
+    assert_output --partial "Done, without errors."
+    assert_output --partial "OK: All modules are perfectly processed by grunt"
+}
+
+@test "grunt_process: Uncommited .less change" {
+    # Create css change.
+    cd $gitdir
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/31-grunt-less-unbuilt.patch
+
+    # Run test
+    cd $BATS_TEST_DIRNAME/../grunt_process/
+    run ./grunt_process.sh
+
+    # Assert result
+    assert_failure
+    assert_output --partial "Done, without errors." # Grunt shouldn't have an issue here.
+    assert_output --partial "ERROR: Some modules are not properly processed by grunt. Changes detected:"
+    assert_output --regexp "GRUNT-CHANGE: (.*)/theme/bootstrapbase/style/moodle.css"
+}
+
+@test "grunt_process: Uncommited .js change" {
+    # Create js change.
+    cd $gitdir
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/31-grunt-js-unbuilt.patch
+
+    # Run test
+    cd $BATS_TEST_DIRNAME/../grunt_process/
+    run ./grunt_process.sh
+
+    # Assert result
+    assert_failure
+    assert_output --partial "Done, without errors." # Grunt shouldn't have an issue here.
+    assert_output --partial "ERROR: Some modules are not properly processed by grunt. Changes detected:"
+    assert_output --regexp "GRUNT-CHANGE: (.*)/lib/amd/build/url.min.js"
+}
+
+@test "grunt_process: Uncommited ignorefiles change" {
+    # When a third party library is added, developers need to commit
+    # ignorefiles change since 3.2.
+
+    # Testing on in-dev 3.2dev
+    create_git_branch 32-dev 5a1728df39116fc701cc907e85a638aa7674f416
+    cd $gitdir
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/32-thirdparty-lib-added.patch
+
+    # Run test
+    cd $BATS_TEST_DIRNAME/../grunt_process/
+    run ./grunt_process.sh
+
+    # Assert result
+    assert_failure
+    assert_output --partial "ERROR: Some modules are not properly processed by grunt. Changes detected:"
+    assert_output --regexp "GRUNT-CHANGE: (.*)/.eslintignore"
+}
+
diff --git a/tests/99-shifter_walk.bats b/tests/99-shifter_walk.bats
new file mode 100755
index 00000000..b6679c4a
--- /dev/null
+++ b/tests/99-shifter_walk.bats
@@ -0,0 +1,29 @@
+#!/usr/bin/env bats
+
+load libs/shared_setup
+
+setup () {
+    create_git_branch MOODLE_27_STABLE v2.7.14
+
+    export extrapath=.
+    # setup shifter base.
+    export shifterbase=$LOCAL_CI_TESTS_CACHEDIR/shifter
+    mkdir -p $shifterbase
+}
+
+@test "shifter_walk: normal" {
+    cd $BATS_TEST_DIRNAME/../shifter_walk/
+    run ./shifter_walk.sh
+    assert_success
+    assert_output --partial "OK: All modules are perfectly shiftered"
+}
+
+@test "shifter_walk: Uncommitted .js change" {
+    cd $gitdir
+    $gitcmd am $BATS_TEST_DIRNAME/fixtures/27-shifter-unbuildjs.patch
+    cd $BATS_TEST_DIRNAME/../shifter_walk/
+    run ./shifter_walk.sh
+    assert_failure
+    assert_output --partial "ERROR: Some modules are not properly shiftered. Changes detected:"
+    assert_output --partial "lib/editor/atto/yui/build/moodle-editor_atto-editor/moodle-editor_atto-editor.js"
+}
diff --git a/tests/fixtures/27-less-unbuilt.patch b/tests/fixtures/27-less-unbuilt.patch
new file mode 100644
index 00000000..1e9506fa
--- /dev/null
+++ b/tests/fixtures/27-less-unbuilt.patch
@@ -0,0 +1,26 @@
+From 793df60c6b5d4733191ef7d2c2b19b940803c066 Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 22:35:27 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 fixture: for less tests
+
+This should be applied on top of v2.7.14
+---
+ theme/bootstrapbase/less/moodle/reports.less | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/theme/bootstrapbase/less/moodle/reports.less b/theme/bootstrapbase/less/moodle/reports.less
+index 6c90a80..211c709 100644
+--- a/theme/bootstrapbase/less/moodle/reports.less
++++ b/theme/bootstrapbase/less/moodle/reports.less
+@@ -15,4 +15,6 @@
+ 
+ #page-report-participation-index.dir-rtl .participationselectform div label[for=menuinstanceid] {
+     margin-right: 0px; // No right margin for RTL.
+-}
+\ No newline at end of file
++}
++
++.integrationcsschange{display:none;}
+-- 
+2.8.1
+
diff --git a/tests/fixtures/27-shifter-unbuildjs.patch b/tests/fixtures/27-shifter-unbuildjs.patch
new file mode 100644
index 00000000..012d9e5a
--- /dev/null
+++ b/tests/fixtures/27-shifter-unbuildjs.patch
@@ -0,0 +1,26 @@
+From f2e278d056561d0d6fbce54be6d187a514640553 Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 22:20:00 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 fixture: for shifter tests
+
+This should be applied on top of v2.7.14
+---
+ lib/editor/atto/yui/src/editor/js/editor.js | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/editor/atto/yui/src/editor/js/editor.js b/lib/editor/atto/yui/src/editor/js/editor.js
+index ca6ca55..5260475 100644
+--- a/lib/editor/atto/yui/src/editor/js/editor.js
++++ b/lib/editor/atto/yui/src/editor/js/editor.js
+@@ -363,7 +363,7 @@ Y.extend(Editor, Y.Base, {
+     },
+ 
+     _setPluginState: function(enable, plugin) {
+-        var target = 'disableButtons';
++        var target = 'disableButtons-dan-woz-ere';
+         if (enable) {
+             target = 'enableButtons';
+         }
+-- 
+2.8.1
+
diff --git a/tests/fixtures/31-grunt-js-unbuilt.patch b/tests/fixtures/31-grunt-js-unbuilt.patch
new file mode 100644
index 00000000..7c4bbc19
--- /dev/null
+++ b/tests/fixtures/31-grunt-js-unbuilt.patch
@@ -0,0 +1,26 @@
+From ca0ff741dab36b760e20a37418fcdb139885eb79 Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 23:06:36 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 fixture: unbuilt js change for grunt
+
+This should be applied on top of v3.1.0
+---
+ lib/amd/src/url.js | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/amd/src/url.js b/lib/amd/src/url.js
+index b3263ee..b6348de 100644
+--- a/lib/amd/src/url.js
++++ b/lib/amd/src/url.js
+@@ -61,7 +61,7 @@ define(['core/config'], function(config) {
+         relativeUrl: function(relativePath) {
+ 
+             if (relativePath.indexOf('http:') === 0 || relativePath.indexOf('https:') === 0 || relativePath.indexOf('://') >= 0) {
+-                throw new Error('relativeUrl function does not accept absolute urls');
++                throw new Error('relativeUrl function does not accept absolute urls. danp woz ere!');
+             }
+ 
+             // Fix non-relative paths;
+-- 
+2.8.1
+
diff --git a/tests/fixtures/31-grunt-less-unbuilt.patch b/tests/fixtures/31-grunt-less-unbuilt.patch
new file mode 100644
index 00000000..d7da32c2
--- /dev/null
+++ b/tests/fixtures/31-grunt-less-unbuilt.patch
@@ -0,0 +1,26 @@
+From 205c355bc8ef7bfb52695cc42f2d98826759364b Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 22:35:27 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 fixture: less unbuilt for grunt tests
+
+This should be applied on top of v3.1.0
+---
+ theme/bootstrapbase/less/moodle/reports.less | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/theme/bootstrapbase/less/moodle/reports.less b/theme/bootstrapbase/less/moodle/reports.less
+index 6c90a80..211c709 100644
+--- a/theme/bootstrapbase/less/moodle/reports.less
++++ b/theme/bootstrapbase/less/moodle/reports.less
+@@ -15,4 +15,6 @@
+ 
+ #page-report-participation-index.dir-rtl .participationselectform div label[for=menuinstanceid] {
+     margin-right: 0px; // No right margin for RTL.
+-}
+\ No newline at end of file
++}
++
++.integrationcsschange{display:none;}
+-- 
+2.8.1
+
diff --git a/tests/fixtures/31-php_lint-bad.patch b/tests/fixtures/31-php_lint-bad.patch
new file mode 100644
index 00000000..e3b4017b
--- /dev/null
+++ b/tests/fixtures/31-php_lint-bad.patch
@@ -0,0 +1,22 @@
+From 7fd18b3698c14916bdfa83f502544ddd0eb65b20 Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 22:54:14 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 fixture: for php_lint tests
+
+This should be applied on top of v3.1.0
+---
+ lib/moodlelib.php | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/lib/moodlelib.php b/lib/moodlelib.php
+index 8160f89..f6c0fd7 100644
+--- a/lib/moodlelib.php
++++ b/lib/moodlelib.php
+@@ -9768,3 +9768,4 @@ class lang_string {
+         return array('forcedstring', 'string', 'lang');
+     }
+ }
++die('oh this is gonna be a problem!
+-- 
+2.8.1
+
diff --git a/tests/fixtures/31-php_lint-ok.patch b/tests/fixtures/31-php_lint-ok.patch
new file mode 100644
index 00000000..9aeee76e
--- /dev/null
+++ b/tests/fixtures/31-php_lint-ok.patch
@@ -0,0 +1,26 @@
+From c6385705362f492fab3dc90cf5317e372fef60c8 Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 22:51:00 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 OK fixture: for php_lint tests
+
+This should be applied on top of v3.1.0
+---
+ lib/moodlelib.php | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/moodlelib.php b/lib/moodlelib.php
+index 8160f89..c7cadf2 100644
+--- a/lib/moodlelib.php
++++ b/lib/moodlelib.php
+@@ -9321,7 +9321,7 @@ function object_array_unique($array, $keepkeyassoc = true) {
+  * @return boolean
+  */
+ function is_primary_admin($userid) {
+-    $primaryadmin =  get_admin();
++    $primaryadmin = get_admin();
+ 
+     if ($userid == $primaryadmin->id) {
+         return true;
+-- 
+2.8.1
+
diff --git a/tests/fixtures/31-thirdparty-error.patch b/tests/fixtures/31-thirdparty-error.patch
new file mode 100644
index 00000000..6e74337f
--- /dev/null
+++ b/tests/fixtures/31-thirdparty-error.patch
@@ -0,0 +1,31 @@
+From 096f3a432dcc478a7277889dee49f46f833c39b5 Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 23:21:24 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 fixture: for thirdparty check
+
+This should be applied on top of v3.1.0
+---
+ lib/amd/src/mustache.js | 7 -------
+ 1 file changed, 7 deletions(-)
+
+diff --git a/lib/amd/src/mustache.js b/lib/amd/src/mustache.js
+index a3ce19e..1075fad 100644
+--- a/lib/amd/src/mustache.js
++++ b/lib/amd/src/mustache.js
+@@ -25,13 +25,6 @@
+ //
+ 
+ // Description of import into Moodle:
+-// Checkout from https://github.com/moodle/custom-mustache.js
+-// Rebase onto latest release tag from https://github.com/janl/mustache.js
+-// Copy mustache.js into lib/amd/src/ in Moodle folder.
+-// Add the license as a comment to the file and these instructions.
+-// Add jshint tags so this file is not linted.
+-// Remove the "global define:" comment (hint for linter)
+-// Make sure that you have not removed the custom code for '$' and '<'.
+ 
+ /*!
+  * mustache.js - Logic-less {{mustache}} templates with JavaScript
+-- 
+2.8.1
+
diff --git a/tests/fixtures/31-thirdparty-ok.patch b/tests/fixtures/31-thirdparty-ok.patch
new file mode 100644
index 00000000..770611cc
--- /dev/null
+++ b/tests/fixtures/31-thirdparty-ok.patch
@@ -0,0 +1,45 @@
+From c0805275c6a79422632d0fb10bd7fa9f518929a8 Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Wed, 15 Jun 2016 23:21:24 +0100
+Subject: [PATCH 1/1] MDLSITE-4211 fixture: OK thirdparty check
+
+This should be applied on top of v3.1.0
+---
+ lib/amd/src/mustache.js | 7 -------
+ lib/thirdpartylibs.xml  | 2 +-
+ 2 files changed, 1 insertion(+), 8 deletions(-)
+
+diff --git a/lib/amd/src/mustache.js b/lib/amd/src/mustache.js
+index a3ce19e..1075fad 100644
+--- a/lib/amd/src/mustache.js
++++ b/lib/amd/src/mustache.js
+@@ -25,13 +25,6 @@
+ //
+ 
+ // Description of import into Moodle:
+-// Checkout from https://github.com/moodle/custom-mustache.js
+-// Rebase onto latest release tag from https://github.com/janl/mustache.js
+-// Copy mustache.js into lib/amd/src/ in Moodle folder.
+-// Add the license as a comment to the file and these instructions.
+-// Add jshint tags so this file is not linted.
+-// Remove the "global define:" comment (hint for linter)
+-// Make sure that you have not removed the custom code for '$' and '<'.
+ 
+ /*!
+  * mustache.js - Logic-less {{mustache}} templates with JavaScript
+diff --git a/lib/thirdpartylibs.xml b/lib/thirdpartylibs.xml
+index 6440a73..2779103 100644
+--- a/lib/thirdpartylibs.xml
++++ b/lib/thirdpartylibs.xml
+@@ -261,7 +261,7 @@
+     <location>amd/src/mustache.js</location>
+     <name>Mustache.js</name>
+     <license>MIT</license>
+-    <version>2.2.1</version>
++    <version>2.2.2</version>
+   </library>
+   <library>
+     <location>graphlib.php</location>
+-- 
+2.8.1
+
diff --git a/tests/fixtures/32-thirdparty-lib-added.patch b/tests/fixtures/32-thirdparty-lib-added.patch
new file mode 100644
index 00000000..fe3599dc
--- /dev/null
+++ b/tests/fixtures/32-thirdparty-lib-added.patch
@@ -0,0 +1,27 @@
+From 4600d7d6fd5d5bd4f5bae80c3e89b838d95f2b1d Mon Sep 17 00:00:00 2001
+From: Dan Poltawski <dan@moodle.com>
+Date: Tue, 12 Jul 2016 11:23:56 +0100
+Subject: [PATCH 1/1] MDLSITE-4678 fixture: adding third party lib
+
+---
+ lib/thirdpartylibs.xml | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/lib/thirdpartylibs.xml b/lib/thirdpartylibs.xml
+index 6440a73..3385d2f 100644
+--- a/lib/thirdpartylibs.xml
++++ b/lib/thirdpartylibs.xml
+@@ -275,4 +275,10 @@
+     <license>GPL</license>
+     <version>2.3.0</version>
+   </library>
++  <library>
++    <location>integrationtest</location>
++    <name>Moodle Integration test for MDLSITE-4678</name>
++    <license>GPL</license>
++    <version>2.3.0</version>
++  </library>
+ </libraries>
+-- 
+2.9.0
+
diff --git a/tests/libs/bats-assert/load.bash b/tests/libs/bats-assert/load.bash
new file mode 100644
index 00000000..ac4a875a
--- /dev/null
+++ b/tests/libs/bats-assert/load.bash
@@ -0,0 +1 @@
+source "$(dirname "${BASH_SOURCE[0]}")/src/assert.bash"
diff --git a/tests/libs/bats-assert/src/assert.bash b/tests/libs/bats-assert/src/assert.bash
new file mode 100644
index 00000000..11947538
--- /dev/null
+++ b/tests/libs/bats-assert/src/assert.bash
@@ -0,0 +1,720 @@
+#
+# bats-assert - Common assertions for Bats
+#
+# Written in 2016 by Zoltan Tombol <zoltan dot tombol at gmail dot com>
+#
+# To the extent possible under law, the author(s) have dedicated all
+# copyright and related and neighboring rights to this software to the
+# public domain worldwide. This software is distributed without any
+# warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication
+# along with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>.
+#
+
+#
+# assert.bash
+# -----------
+#
+# Assertions are functions that perform a test and output relevant
+# information on failure to help debugging. They return 1 on failure
+# and 0 otherwise.
+#
+# All output is formatted for readability using the functions of
+# `output.bash' and sent to the standard error.
+#
+
+# Fail and display the expression if it evaluates to false.
+#
+# NOTE: The expression must be a simple command. Compound commands, such
+#       as `[[', can be used only when executed with `bash -c'.
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - expression
+# Returns:
+#   0 - expression evaluates to TRUE
+#   1 - otherwise
+# Outputs:
+#   STDERR - details, on failure
+assert() {
+  if ! "$@"; then
+    batslib_print_kv_single 10 'expression' "$*" \
+      | batslib_decorate 'assertion failed' \
+      | fail
+  fi
+}
+
+# Fail and display the expression if it evaluates to true.
+#
+# NOTE: The expression must be a simple command. Compound commands, such
+#       as `[[', can be used only when executed with `bash -c'.
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - expression
+# Returns:
+#   0 - expression evaluates to FALSE
+#   1 - otherwise
+# Outputs:
+#   STDERR - details, on failure
+refute() {
+  if "$@"; then
+    batslib_print_kv_single 10 'expression' "$*" \
+      | batslib_decorate 'assertion succeeded, but it was expected to fail' \
+      | fail
+  fi
+}
+
+# Fail and display details if the expected and actual values do not
+# equal. Details include both values.
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - actual value
+#   $2 - expected value
+# Returns:
+#   0 - values equal
+#   1 - otherwise
+# Outputs:
+#   STDERR - details, on failure
+assert_equal() {
+  if [[ $1 != "$2" ]]; then
+    batslib_print_kv_single_or_multi 8 \
+        'expected' "$2" \
+        'actual'   "$1" \
+      | batslib_decorate 'values do not equal' \
+      | fail
+  fi
+}
+
+# Fail and display details if `$status' is not 0. Details include
+# `$status' and `$output'.
+#
+# Globals:
+#   status
+#   output
+# Arguments:
+#   none
+# Returns:
+#   0 - `$status' is 0
+#   1 - otherwise
+# Outputs:
+#   STDERR - details, on failure
+assert_success() {
+  if (( status != 0 )); then
+    { local -ir width=6
+      batslib_print_kv_single "$width" 'status' "$status"
+      batslib_print_kv_single_or_multi "$width" 'output' "$output"
+    } | batslib_decorate 'command failed' \
+      | fail
+  fi
+}
+
+# Fail and display details if `$status' is 0. Details include `$output'.
+#
+# Optionally, when the expected status is specified, fail when it does
+# not equal `$status'. In this case, details include the expected and
+# actual status, and `$output'.
+#
+# Globals:
+#   status
+#   output
+# Arguments:
+#   $1 - [opt] expected status
+# Returns:
+#   0 - `$status' is not 0, or
+#       `$status' equals the expected status
+#   1 - otherwise
+# Outputs:
+#   STDERR - details, on failure
+assert_failure() {
+  (( $# > 0 )) && local -r expected="$1"
+  if (( status == 0 )); then
+    batslib_print_kv_single_or_multi 6 'output' "$output" \
+      | batslib_decorate 'command succeeded, but it was expected to fail' \
+      | fail
+  elif (( $# > 0 )) && (( status != expected )); then
+    { local -ir width=8
+      batslib_print_kv_single "$width" \
+          'expected' "$expected" \
+          'actual'   "$status"
+      batslib_print_kv_single_or_multi "$width" \
+          'output' "$output"
+    } | batslib_decorate 'command failed as expected, but status differs' \
+      | fail
+  fi
+}
+
+# Fail and display details if `$output' does not match the expected
+# output. The expected output can be specified either by the first
+# parameter or on the standard input.
+#
+# By default, literal matching is performed. The assertion fails if the
+# expected output does not equal `$output'. Details include both values.
+#
+# Option `--partial' enables partial matching. The assertion fails if
+# the expected substring cannot be found in `$output'.
+#
+# Option `--regexp' enables regular expression matching. The assertion
+# fails if the extended regular expression does not match `$output'. An
+# invalid regular expression causes an error to be displayed.
+#
+# It is an error to use partial and regular expression matching
+# simultaneously.
+#
+# Globals:
+#   output
+# Options:
+#   -p, --partial - partial matching
+#   -e, --regexp - extended regular expression matching
+# Arguments:
+#   $1 - [=STDIN] expected output
+# Returns:
+#   0 - expected matches the actual output
+#   1 - otherwise
+# Inputs:
+#   STDIN - [=$1] expected output
+# Outputs:
+#   STDERR - details, on failure
+#            error message, on error
+assert_output() {
+  local -i is_mode_partial=0
+  local -i is_mode_regexp=0
+
+  # Handle options.
+  while (( $# > 0 )); do
+    case "$1" in
+      -p|--partial) is_mode_partial=1; shift ;;
+      -e|--regexp) is_mode_regexp=1; shift ;;
+      --) shift; break ;;
+      *) break ;;
+    esac
+  done
+
+  if (( is_mode_partial )) && (( is_mode_regexp )); then
+    echo "\`--partial' and \`--regexp' are mutually exclusive" \
+      | batslib_decorate 'ERROR: assert_output' \
+      | fail
+    return $?
+  fi
+
+  # Arguments.
+  local expected
+  (( $# == 0 )) && expected="$(cat -)" || expected="$1"
+
+  # Matching.
+  if (( is_mode_regexp )); then
+    if [[ '' =~ $expected ]] || (( $? == 2 )); then
+      echo "Invalid extended regular expression: \`$expected'" \
+        | batslib_decorate 'ERROR: assert_output' \
+        | fail
+      return $?
+    fi
+    if ! [[ $output =~ $expected ]]; then
+      batslib_print_kv_single_or_multi 6 \
+          'regexp'  "$expected" \
+          'output' "$output" \
+        | batslib_decorate 'regular expression does not match output' \
+        | fail
+    fi
+  elif (( is_mode_partial )); then
+    if [[ $output != *"$expected"* ]]; then
+      batslib_print_kv_single_or_multi 9 \
+          'substring' "$expected" \
+          'output'    "$output" \
+        | batslib_decorate 'output does not contain substring' \
+        | fail
+    fi
+  else
+    if [[ $output != "$expected" ]]; then
+      batslib_print_kv_single_or_multi 8 \
+          'expected' "$expected" \
+          'actual'   "$output" \
+        | batslib_decorate 'output differs' \
+        | fail
+    fi
+  fi
+}
+
+# Fail and display details if `$output' matches the unexpected output.
+# The unexpected output can be specified either by the first parameter
+# or on the standard input.
+#
+# By default, literal matching is performed. The assertion fails if the
+# unexpected output equals `$output'. Details include `$output'.
+#
+# Option `--partial' enables partial matching. The assertion fails if
+# the unexpected substring is found in `$output'. The unexpected
+# substring is added to details.
+#
+# Option `--regexp' enables regular expression matching. The assertion
+# fails if the extended regular expression does matches `$output'. The
+# regular expression is added to details. An invalid regular expression
+# causes an error to be displayed.
+#
+# It is an error to use partial and regular expression matching
+# simultaneously.
+#
+# Globals:
+#   output
+# Options:
+#   -p, --partial - partial matching
+#   -e, --regexp - extended regular expression matching
+# Arguments:
+#   $1 - [=STDIN] unexpected output
+# Returns:
+#   0 - unexpected matches the actual output
+#   1 - otherwise
+# Inputs:
+#   STDIN - [=$1] unexpected output
+# Outputs:
+#   STDERR - details, on failure
+#            error message, on error
+refute_output() {
+  local -i is_mode_partial=0
+  local -i is_mode_regexp=0
+
+  # Handle options.
+  while (( $# > 0 )); do
+    case "$1" in
+      -p|--partial) is_mode_partial=1; shift ;;
+      -e|--regexp) is_mode_regexp=1; shift ;;
+      --) shift; break ;;
+      *) break ;;
+    esac
+  done
+
+  if (( is_mode_partial )) && (( is_mode_regexp )); then
+    echo "\`--partial' and \`--regexp' are mutually exclusive" \
+      | batslib_decorate 'ERROR: refute_output' \
+      | fail
+    return $?
+  fi
+
+  # Arguments.
+  local unexpected
+  (( $# == 0 )) && unexpected="$(cat -)" || unexpected="$1"
+
+  if (( is_mode_regexp == 1 )) && [[ '' =~ $unexpected ]] || (( $? == 2 )); then
+    echo "Invalid extended regular expression: \`$unexpected'" \
+      | batslib_decorate 'ERROR: refute_output' \
+      | fail
+    return $?
+  fi
+
+  # Matching.
+  if (( is_mode_regexp )); then
+    if [[ $output =~ $unexpected ]] || (( $? == 0 )); then
+      batslib_print_kv_single_or_multi 6 \
+          'regexp'  "$unexpected" \
+          'output' "$output" \
+        | batslib_decorate 'regular expression should not match output' \
+        | fail
+    fi
+  elif (( is_mode_partial )); then
+    if [[ $output == *"$unexpected"* ]]; then
+      batslib_print_kv_single_or_multi 9 \
+          'substring' "$unexpected" \
+          'output'    "$output" \
+        | batslib_decorate 'output should not contain substring' \
+        | fail
+    fi
+  else
+    if [[ $output == "$unexpected" ]]; then
+      batslib_print_kv_single_or_multi 6 \
+          'output' "$output" \
+        | batslib_decorate 'output equals, but it was expected to differ' \
+        | fail
+    fi
+  fi
+}
+
+# Fail and display details if the expected line is not found in the
+# output (default) or in a specific line of it.
+#
+# By default, the entire output is searched for the expected line. The
+# expected line is matched against every element of `${lines[@]}'. If no
+# match is found, the assertion fails. Details include the expected line
+# and `${lines[@]}'.
+#
+# When `--index <idx>' is specified, only the <idx>-th line is matched.
+# If the expected line does not match `${lines[<idx>]}', the assertion
+# fails. Details include <idx> and the compared lines.
+#
+# By default, literal matching is performed. A literal match fails if
+# the expected string does not equal the matched string.
+#
+# Option `--partial' enables partial matching. A partial match fails if
+# the expected substring is not found in the target string.
+#
+# Option `--regexp' enables regular expression matching. A regular
+# expression match fails if the extended regular expression does not
+# match the target string. An invalid regular expression causes an error
+# to be displayed.
+#
+# It is an error to use partial and regular expression matching
+# simultaneously.
+#
+# Mandatory arguments to long options are mandatory for short options
+# too.
+#
+# Globals:
+#   output
+#   lines
+# Options:
+#   -n, --index <idx> - match the <idx>-th line
+#   -p, --partial - partial matching
+#   -e, --regexp - extended regular expression matching
+# Arguments:
+#   $1 - expected line
+# Returns:
+#   0 - match found
+#   1 - otherwise
+# Outputs:
+#   STDERR - details, on failure
+#            error message, on error
+# FIXME(ztombol): Display `${lines[@]}' instead of `$output'!
+assert_line() {
+  local -i is_match_line=0
+  local -i is_mode_partial=0
+  local -i is_mode_regexp=0
+
+  # Handle options.
+  while (( $# > 0 )); do
+    case "$1" in
+      -n|--index)
+        if (( $# < 2 )) || ! [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
+          echo "\`--index' requires an integer argument: \`$2'" \
+            | batslib_decorate 'ERROR: assert_line' \
+            | fail
+          return $?
+        fi
+        is_match_line=1
+        local -ri idx="$2"
+        shift 2
+        ;;
+      -p|--partial) is_mode_partial=1; shift ;;
+      -e|--regexp) is_mode_regexp=1; shift ;;
+      --) shift; break ;;
+      *) break ;;
+    esac
+  done
+
+  if (( is_mode_partial )) && (( is_mode_regexp )); then
+    echo "\`--partial' and \`--regexp' are mutually exclusive" \
+      | batslib_decorate 'ERROR: assert_line' \
+      | fail
+    return $?
+  fi
+
+  # Arguments.
+  local -r expected="$1"
+
+  if (( is_mode_regexp == 1 )) && [[ '' =~ $expected ]] || (( $? == 2 )); then
+    echo "Invalid extended regular expression: \`$expected'" \
+      | batslib_decorate 'ERROR: assert_line' \
+      | fail
+    return $?
+  fi
+
+  # Matching.
+  if (( is_match_line )); then
+    # Specific line.
+    if (( is_mode_regexp )); then
+      if ! [[ ${lines[$idx]} =~ $expected ]]; then
+        batslib_print_kv_single 6 \
+            'index' "$idx" \
+            'regexp' "$expected" \
+            'line'  "${lines[$idx]}" \
+          | batslib_decorate 'regular expression does not match line' \
+          | fail
+      fi
+    elif (( is_mode_partial )); then
+      if [[ ${lines[$idx]} != *"$expected"* ]]; then
+        batslib_print_kv_single 9 \
+            'index'     "$idx" \
+            'substring' "$expected" \
+            'line'      "${lines[$idx]}" \
+          | batslib_decorate 'line does not contain substring' \
+          | fail
+      fi
+    else
+      if [[ ${lines[$idx]} != "$expected" ]]; then
+        batslib_print_kv_single 8 \
+            'index'    "$idx" \
+            'expected' "$expected" \
+            'actual'   "${lines[$idx]}" \
+          | batslib_decorate 'line differs' \
+          | fail
+      fi
+    fi
+  else
+    # Contained in output.
+    if (( is_mode_regexp )); then
+      local -i idx
+      for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
+        [[ ${lines[$idx]} =~ $expected ]] && return 0
+      done
+      { local -ar single=(
+          'regexp'  "$expected"
+        )
+        local -ar may_be_multi=(
+          'output' "$output"
+        )
+        local -ir width="$( batslib_get_max_single_line_key_width \
+                              "${single[@]}" "${may_be_multi[@]}" )"
+        batslib_print_kv_single "$width" "${single[@]}"
+        batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
+      } | batslib_decorate 'no output line matches regular expression' \
+        | fail
+    elif (( is_mode_partial )); then
+      local -i idx
+      for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
+        [[ ${lines[$idx]} == *"$expected"* ]] && return 0
+      done
+      { local -ar single=(
+          'substring' "$expected"
+        )
+        local -ar may_be_multi=(
+          'output'    "$output"
+        )
+        local -ir width="$( batslib_get_max_single_line_key_width \
+                              "${single[@]}" "${may_be_multi[@]}" )"
+        batslib_print_kv_single "$width" "${single[@]}"
+        batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
+      } | batslib_decorate 'no output line contains substring' \
+        | fail
+    else
+      local -i idx
+      for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
+        [[ ${lines[$idx]} == "$expected" ]] && return 0
+      done
+      { local -ar single=(
+          'line'   "$expected"
+        )
+        local -ar may_be_multi=(
+          'output' "$output"
+        )
+        local -ir width="$( batslib_get_max_single_line_key_width \
+                            "${single[@]}" "${may_be_multi[@]}" )"
+        batslib_print_kv_single "$width" "${single[@]}"
+        batslib_print_kv_single_or_multi "$width" "${may_be_multi[@]}"
+      } | batslib_decorate 'output does not contain line' \
+        | fail
+    fi
+  fi
+}
+
+# Fail and display details if the unexpected line is found in the output
+# (default) or in a specific line of it.
+#
+# By default, the entire output is searched for the unexpected line. The
+# unexpected line is matched against every element of `${lines[@]}'. If
+# a match is found, the assertion fails. Details include the unexpected
+# line, the index of the first match and `${lines[@]}' with the matching
+# line highlighted if `${lines[@]}' is longer than one line.
+#
+# When `--index <idx>' is specified, only the <idx>-th line is matched.
+# If the unexpected line matches `${lines[<idx>]}', the assertion fails.
+# Details include <idx> and the unexpected line.
+#
+# By default, literal matching is performed. A literal match fails if
+# the unexpected string does not equal the matched string.
+#
+# Option `--partial' enables partial matching. A partial match fails if
+# the unexpected substring is found in the target string. When used with
+# `--index <idx>', the unexpected substring is also displayed on
+# failure.
+#
+# Option `--regexp' enables regular expression matching. A regular
+# expression match fails if the extended regular expression matches the
+# target string. When used with `--index <idx>', the regular expression
+# is also displayed on failure. An invalid regular expression causes an
+# error to be displayed.
+#
+# It is an error to use partial and regular expression matching
+# simultaneously.
+#
+# Mandatory arguments to long options are mandatory for short options
+# too.
+#
+# Globals:
+#   output
+#   lines
+# Options:
+#   -n, --index <idx> - match the <idx>-th line
+#   -p, --partial - partial matching
+#   -e, --regexp - extended regular expression matching
+# Arguments:
+#   $1 - unexpected line
+# Returns:
+#   0 - match not found
+#   1 - otherwise
+# Outputs:
+#   STDERR - details, on failure
+#            error message, on error
+# FIXME(ztombol): Display `${lines[@]}' instead of `$output'!
+refute_line() {
+  local -i is_match_line=0
+  local -i is_mode_partial=0
+  local -i is_mode_regexp=0
+
+  # Handle options.
+  while (( $# > 0 )); do
+    case "$1" in
+      -n|--index)
+        if (( $# < 2 )) || ! [[ $2 =~ ^([0-9]|[1-9][0-9]+)$ ]]; then
+          echo "\`--index' requires an integer argument: \`$2'" \
+            | batslib_decorate 'ERROR: refute_line' \
+            | fail
+          return $?
+        fi
+        is_match_line=1
+        local -ri idx="$2"
+        shift 2
+        ;;
+      -p|--partial) is_mode_partial=1; shift ;;
+      -e|--regexp) is_mode_regexp=1; shift ;;
+      --) shift; break ;;
+      *) break ;;
+    esac
+  done
+
+  if (( is_mode_partial )) && (( is_mode_regexp )); then
+    echo "\`--partial' and \`--regexp' are mutually exclusive" \
+      | batslib_decorate 'ERROR: refute_line' \
+      | fail
+    return $?
+  fi
+
+  # Arguments.
+  local -r unexpected="$1"
+
+  if (( is_mode_regexp == 1 )) && [[ '' =~ $unexpected ]] || (( $? == 2 )); then
+    echo "Invalid extended regular expression: \`$unexpected'" \
+      | batslib_decorate 'ERROR: refute_line' \
+      | fail
+    return $?
+  fi
+
+  # Matching.
+  if (( is_match_line )); then
+    # Specific line.
+    if (( is_mode_regexp )); then
+      if [[ ${lines[$idx]} =~ $unexpected ]] || (( $? == 0 )); then
+        batslib_print_kv_single 6 \
+            'index' "$idx" \
+            'regexp' "$unexpected" \
+            'line'  "${lines[$idx]}" \
+          | batslib_decorate 'regular expression should not match line' \
+          | fail
+      fi
+    elif (( is_mode_partial )); then
+      if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
+        batslib_print_kv_single 9 \
+            'index'     "$idx" \
+            'substring' "$unexpected" \
+            'line'      "${lines[$idx]}" \
+          | batslib_decorate 'line should not contain substring' \
+          | fail
+      fi
+    else
+      if [[ ${lines[$idx]} == "$unexpected" ]]; then
+        batslib_print_kv_single 5 \
+            'index' "$idx" \
+            'line'  "${lines[$idx]}" \
+          | batslib_decorate 'line should differ' \
+          | fail
+      fi
+    fi
+  else
+    # Line contained in output.
+    if (( is_mode_regexp )); then
+      local -i idx
+      for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
+        if [[ ${lines[$idx]} =~ $unexpected ]]; then
+          { local -ar single=(
+              'regexp'  "$unexpected"
+              'index'  "$idx"
+            )
+            local -a may_be_multi=(
+              'output' "$output"
+            )
+            local -ir width="$( batslib_get_max_single_line_key_width \
+                                "${single[@]}" "${may_be_multi[@]}" )"
+            batslib_print_kv_single "$width" "${single[@]}"
+            if batslib_is_single_line "${may_be_multi[1]}"; then
+              batslib_print_kv_single "$width" "${may_be_multi[@]}"
+            else
+              may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" \
+                                    | batslib_prefix \
+                                    | batslib_mark '>' "$idx" )"
+              batslib_print_kv_multi "${may_be_multi[@]}"
+            fi
+          } | batslib_decorate 'no line should match the regular expression' \
+            | fail
+          return $?
+        fi
+      done
+    elif (( is_mode_partial )); then
+      local -i idx
+      for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
+        if [[ ${lines[$idx]} == *"$unexpected"* ]]; then
+          { local -ar single=(
+              'substring' "$unexpected"
+              'index'     "$idx"
+            )
+            local -a may_be_multi=(
+              'output'    "$output"
+            )
+            local -ir width="$( batslib_get_max_single_line_key_width \
+                                "${single[@]}" "${may_be_multi[@]}" )"
+            batslib_print_kv_single "$width" "${single[@]}"
+            if batslib_is_single_line "${may_be_multi[1]}"; then
+              batslib_print_kv_single "$width" "${may_be_multi[@]}"
+            else
+              may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" \
+                                    | batslib_prefix \
+                                    | batslib_mark '>' "$idx" )"
+              batslib_print_kv_multi "${may_be_multi[@]}"
+            fi
+          } | batslib_decorate 'no line should contain substring' \
+            | fail
+          return $?
+        fi
+      done
+    else
+      local -i idx
+      for (( idx = 0; idx < ${#lines[@]}; ++idx )); do
+        if [[ ${lines[$idx]} == "$unexpected" ]]; then
+          { local -ar single=(
+              'line'   "$unexpected"
+              'index'  "$idx"
+            )
+            local -a may_be_multi=(
+              'output' "$output"
+            )
+            local -ir width="$( batslib_get_max_single_line_key_width \
+                                "${single[@]}" "${may_be_multi[@]}" )"
+            batslib_print_kv_single "$width" "${single[@]}"
+            if batslib_is_single_line "${may_be_multi[1]}"; then
+              batslib_print_kv_single "$width" "${may_be_multi[@]}"
+            else
+              may_be_multi[1]="$( printf '%s' "${may_be_multi[1]}" \
+                                    | batslib_prefix \
+                                    | batslib_mark '>' "$idx" )"
+              batslib_print_kv_multi "${may_be_multi[@]}"
+            fi
+          } | batslib_decorate 'line should not be in output' \
+            | fail
+          return $?
+        fi
+      done
+    fi
+  fi
+}
diff --git a/tests/libs/bats-support/load.bash b/tests/libs/bats-support/load.bash
new file mode 100644
index 00000000..0d4a5ac9
--- /dev/null
+++ b/tests/libs/bats-support/load.bash
@@ -0,0 +1,2 @@
+source "$(dirname "${BASH_SOURCE[0]}")/src/output.bash"
+source "$(dirname "${BASH_SOURCE[0]}")/src/error.bash"
diff --git a/tests/libs/bats-support/src/error.bash b/tests/libs/bats-support/src/error.bash
new file mode 100644
index 00000000..e5d97912
--- /dev/null
+++ b/tests/libs/bats-support/src/error.bash
@@ -0,0 +1,41 @@
+#
+# bats-support - Supporting library for Bats test helpers
+#
+# Written in 2016 by Zoltan Tombol <zoltan dot tombol at gmail dot com>
+#
+# To the extent possible under law, the author(s) have dedicated all
+# copyright and related and neighboring rights to this software to the
+# public domain worldwide. This software is distributed without any
+# warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication
+# along with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>.
+#
+
+#
+# error.bash
+# ----------
+#
+# Functions implementing error reporting. Used by public helper
+# functions or test suits directly.
+#
+
+# Fail and display a message. When no parameters are specified, the
+# message is read from the standard input. Other functions use this to
+# report failure.
+#
+# Globals:
+#   none
+# Arguments:
+#   $@ - [=STDIN] message
+# Returns:
+#   1 - always
+# Inputs:
+#   STDIN - [=$@] message
+# Outputs:
+#   STDERR - message
+fail() {
+  (( $# == 0 )) && batslib_err || batslib_err "$@"
+  return 1
+}
diff --git a/tests/libs/bats-support/src/output.bash b/tests/libs/bats-support/src/output.bash
new file mode 100644
index 00000000..c6cf6a6b
--- /dev/null
+++ b/tests/libs/bats-support/src/output.bash
@@ -0,0 +1,279 @@
+#
+# bats-support - Supporting library for Bats test helpers
+#
+# Written in 2016 by Zoltan Tombol <zoltan dot tombol at gmail dot com>
+#
+# To the extent possible under law, the author(s) have dedicated all
+# copyright and related and neighboring rights to this software to the
+# public domain worldwide. This software is distributed without any
+# warranty.
+#
+# You should have received a copy of the CC0 Public Domain Dedication
+# along with this software. If not, see
+# <http://creativecommons.org/publicdomain/zero/1.0/>. 
+#
+
+#
+# output.bash
+# -----------
+#
+# Private functions implementing output formatting. Used by public
+# helper functions.
+#
+
+# Print a message to the standard error. When no parameters are
+# specified, the message is read from the standard input.
+#
+# Globals:
+#   none
+# Arguments:
+#   $@ - [=STDIN] message
+# Returns:
+#   none
+# Inputs:
+#   STDIN - [=$@] message
+# Outputs:
+#   STDERR - message
+batslib_err() {
+  { if (( $# > 0 )); then
+      echo "$@"
+    else
+      cat -
+    fi
+  } >&2
+}
+
+# Count the number of lines in the given string.
+#
+# TODO(ztombol): Fix tests and remove this note after #93 is resolved!
+# NOTE: Due to a bug in Bats, `batslib_count_lines "$output"' does not
+#       give the same result as `${#lines[@]}' when the output contains
+#       empty lines.
+#       See PR #93 (https://github.com/sstephenson/bats/pull/93).
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - string
+# Returns:
+#   none
+# Outputs:
+#   STDOUT - number of lines
+batslib_count_lines() {
+  local -i n_lines=0
+  local line
+  while IFS='' read -r line || [[ -n $line ]]; do
+    (( ++n_lines ))
+  done < <(printf '%s' "$1")
+  echo "$n_lines"
+}
+
+# Determine whether all strings are single-line.
+#
+# Globals:
+#   none
+# Arguments:
+#   $@ - strings
+# Returns:
+#   0 - all strings are single-line
+#   1 - otherwise
+batslib_is_single_line() {
+  for string in "$@"; do
+    (( $(batslib_count_lines "$string") > 1 )) && return 1
+  done
+  return 0
+}
+
+# Determine the length of the longest key that has a single-line value.
+#
+# This function is useful in determining the correct width of the key
+# column in two-column format when some keys may have multi-line values
+# and thus should be excluded.
+#
+# Globals:
+#   none
+# Arguments:
+#   $odd - key
+#   $even - value of the previous key
+# Returns:
+#   none
+# Outputs:
+#   STDOUT - length of longest key
+batslib_get_max_single_line_key_width() {
+  local -i max_len=-1
+  while (( $# != 0 )); do
+    local -i key_len="${#1}"
+    batslib_is_single_line "$2" && (( key_len > max_len )) && max_len="$key_len"
+    shift 2
+  done
+  echo "$max_len"
+}
+
+# Print key-value pairs in two-column format.
+#
+# Keys are displayed in the first column, and their corresponding values
+# in the second. To evenly line up values, the key column is fixed-width
+# and its width is specified with the first parameter (possibly computed
+# using `batslib_get_max_single_line_key_width').
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - width of key column
+#   $even - key
+#   $odd - value of the previous key
+# Returns:
+#   none
+# Outputs:
+#   STDOUT - formatted key-value pairs
+batslib_print_kv_single() {
+  local -ir col_width="$1"; shift
+  while (( $# != 0 )); do
+    printf '%-*s : %s\n' "$col_width" "$1" "$2"
+    shift 2
+  done
+}
+
+# Print key-value pairs in multi-line format.
+#
+# The key is displayed first with the number of lines of its
+# corresponding value in parenthesis. Next, starting on the next line,
+# the value is displayed. For better readability, it is recommended to
+# indent values using `batslib_prefix'.
+#
+# Globals:
+#   none
+# Arguments:
+#   $odd - key
+#   $even - value of the previous key
+# Returns:
+#   none
+# Outputs:
+#   STDOUT - formatted key-value pairs
+batslib_print_kv_multi() {
+  while (( $# != 0 )); do
+    printf '%s (%d lines):\n' "$1" "$( batslib_count_lines "$2" )"
+    printf '%s\n' "$2"
+    shift 2
+  done
+}
+
+# Print all key-value pairs in either two-column or multi-line format
+# depending on whether all values are single-line.
+#
+# If all values are single-line, print all pairs in two-column format
+# with the specified key column width (identical to using
+# `batslib_print_kv_single').
+#
+# Otherwise, print all pairs in multi-line format after indenting values
+# with two spaces for readability (identical to using `batslib_prefix'
+# and `batslib_print_kv_multi')
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - width of key column (for two-column format)
+#   $even - key
+#   $odd - value of the previous key
+# Returns:
+#   none
+# Outputs:
+#   STDOUT - formatted key-value pairs
+batslib_print_kv_single_or_multi() {
+  local -ir width="$1"; shift
+  local -a pairs=( "$@" )
+
+  local -a values=()
+  local -i i
+  for (( i=1; i < ${#pairs[@]}; i+=2 )); do
+    values+=( "${pairs[$i]}" )
+  done
+
+  if batslib_is_single_line "${values[@]}"; then
+    batslib_print_kv_single "$width" "${pairs[@]}"
+  else
+    local -i i
+    for (( i=1; i < ${#pairs[@]}; i+=2 )); do
+      pairs[$i]="$( batslib_prefix < <(printf '%s' "${pairs[$i]}") )"
+    done
+    batslib_print_kv_multi "${pairs[@]}"
+  fi
+}
+
+# Prefix each line read from the standard input with the given string.
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - [=  ] prefix string
+# Returns:
+#   none
+# Inputs:
+#   STDIN - lines
+# Outputs:
+#   STDOUT - prefixed lines
+batslib_prefix() {
+  local -r prefix="${1:-  }"
+  local line
+  while IFS='' read -r line || [[ -n $line ]]; do
+    printf '%s%s\n' "$prefix" "$line"
+  done
+}
+
+# Mark select lines of the text read from the standard input by
+# overwriting their beginning with the given string.
+#
+# Usually the input is indented by a few spaces using `batslib_prefix'
+# first.
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - marking string
+#   $@ - indices (zero-based) of lines to mark
+# Returns:
+#   none
+# Inputs:
+#   STDIN - lines
+# Outputs:
+#   STDOUT - lines after marking
+batslib_mark() {
+  local -r symbol="$1"; shift
+  # Sort line numbers.
+  set -- $( sort -nu <<< "$( printf '%d\n' "$@" )" )
+
+  local line
+  local -i idx=0
+  while IFS='' read -r line || [[ -n $line ]]; do
+    if (( ${1:--1} == idx )); then
+      printf '%s\n' "${symbol}${line:${#symbol}}"
+      shift
+    else
+      printf '%s\n' "$line"
+    fi
+    (( ++idx ))
+  done
+}
+
+# Enclose the input text in header and footer lines.
+#
+# The header contains the given string as title. The output is preceded
+# and followed by an additional newline to make it stand out more.
+#
+# Globals:
+#   none
+# Arguments:
+#   $1 - title
+# Returns:
+#   none
+# Inputs:
+#   STDIN - text
+# Outputs:
+#   STDOUT - decorated text
+batslib_decorate() {
+  echo
+  echo "-- $1 --"
+  cat -
+  echo '--'
+  echo
+}
diff --git a/tests/libs/shared_setup.bash b/tests/libs/shared_setup.bash
new file mode 100644
index 00000000..5f9ad6e7
--- /dev/null
+++ b/tests/libs/shared_setup.bash
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+set -e
+load 'libs/bats-support/load'
+load 'libs/bats-assert/load'
+
+if [ -z $LOCAL_CI_TESTS_CACHEDIR ]; then
+    echo "Please define LOCAL_CI_TESTS_CACHEDIR" >&2
+    exit 1;
+fi
+
+if [ ! -d $LOCAL_CI_TESTS_CACHEDIR ]; then
+    echo "Please ensure LOCAL_CI_TESTS_CACHEDIR is a directory" >&2
+    exit 1
+fi
+
+if [ -z $LOCAL_CI_TESTS_GITDIR ]; then
+    echo "Please define LOCAL_CI_TESTS_GITDIR. It should be a git clone of moodle.git." >&2
+    echo "IT WILL CAUSE DESTRUCTIVE CHANGES TO THE GIT REPO, DO NOT SHARE IT WITH YOUR CODE!" >&2
+    exit 1;
+fi
+
+export WORKSPACE=$BATS_TMPDIR/workspace
+mkdir -p $WORKSPACE
+export gitcmd=git
+export phpcmd=php
+export npmcmd=npm
+export npmbase=$LOCAL_CI_TESTS_CACHEDIR/npmbase
+mkdir -p $npmbase
+export gitdir=$LOCAL_CI_TESTS_GITDIR
+
+create_git_branch () {
+    branch=$1
+    resetto=$2
+
+    cd $gitdir
+    $gitcmd checkout . -q
+    $gitcmd clean -fd -q
+    $gitcmd checkout -B $branch -q
+    $gitcmd reset --hard $resetto -q
+
+    export gitbranch=$branch
+    cd $BATS_TEST_DIRNAME
+}
+