From 8f40078ee0cce3c50b7cd2308b9e03cad0d4b8c1 Mon Sep 17 00:00:00 2001
From: Artem Vasiliev <artem.job@gmail.com>
Date: Wed, 25 Oct 2017 15:23:19 +0300
Subject: [PATCH] feat: allow 'pretest' to be custom command, too

---
 README.md         | 15 +++++++++++++--
 src/dont-break.js |  9 ++++++++-
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 855a9be..0b69594 100644
--- a/README.md
+++ b/README.md
@@ -140,13 +140,24 @@ was working before the update. If this sounds excessive to you you can disable i
     "name": "foo-module-name",
     "test": "grunt test",
     "pretest": false
-  },
-  "bar-name"
+  }
 ]
 ```
 Here "foo-module-name" module will be tested only once, and "bar-name" twise: first with its published version of 
 current module, and then with the updated version.   
 
+The "pretest" property can also accept custom script to run for pretesting:
+```
+[
+  {
+    "name": "foo-module-name",
+    "test": "grunt test",
+    "pretest": "grunt test && ./ci/after-pretesting-by-dont-break"
+  }
+]
+```
+By default it equals to "test" command.
+
 ### Post-install command
 
 Before testing the dependent package dont-break installs its dev dependencies via `npm install` command run from the
diff --git a/src/dont-break.js b/src/dont-break.js
index 5b4bef8..b29a009 100644
--- a/src/dont-break.js
+++ b/src/dont-break.js
@@ -284,9 +284,16 @@ function testDependent (options, dependent) {
     })
 
   if (testWithPreviousVersion) {
+    var modulePretestCommand
+    if (check.type('string', testWithPreviousVersion)) {
+      modulePretestCommand = testWithPreviousVersion
+    } else {
+      modulePretestCommand = moduleTestCommand
+    }
+    var pretestModuleInFolder = _.partial(testInFolder, modulePretestCommand)
     res = res
       .then(postInstallModuleInFolder)
-      .then(testModuleInFolder)
+      .then(pretestModuleInFolder)
   }
 
   return res