diff --git a/dnf-behave-tests/dnf/plugins-core/actions-json_mode.feature b/dnf-behave-tests/dnf/plugins-core/actions-json_mode.feature
new file mode 100644
index 000000000..7545d7ff8
--- /dev/null
+++ b/dnf-behave-tests/dnf/plugins-core/actions-json_mode.feature
@@ -0,0 +1,729 @@
+@not.with_dnf=4
+@dnf5
+Feature: Tests for libdnf5 actions plugin - json communication mode
+
+
+Background:
+  Given I enable plugin "actions"
+
+    And I configure dnf with
+      | key            | value                                              |
+      | countme        | false                                              |
+      | pluginconfpath | {context.dnf.installroot}/etc/dnf/libdnf5-plugins  |
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.conf" with
+    """
+    [main]
+    enabled = 1
+    """
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_test_utils.py" with
+"""
+import json
+import os
+import sys
+
+sys.path.append('dnf/steps')
+
+from lib.json import diff_json_pattern_values
+
+
+def send_request(request: dict):
+    print(json.dumps(request), flush=True)
+
+
+def send_request_string(request: str):
+    print(request, flush=True)
+    return
+
+
+def check_reply(descr: str, expected: dict):
+    reply_line = sys.stdin.readline()
+    with open(sys.argv[1], 'a') as f:
+        print(descr, end="", file=f)
+        if not reply_line:
+            if expected:
+                print(': Error: No reply', file=f)
+            else:
+                print(': OK', file=f)
+            return
+        reply = json.loads(reply_line)
+        diff = diff_json_pattern_values('', expected, reply)
+        if diff:
+            print(': Error:', diff, file=f)
+            #print(reply_line, file=f)
+        else:
+            print(': OK', file=f)
+"""
+
+    And I use repository "dnf-ci-fedora" with configuration
+      | key     | value                            |
+      | name    | DNF CI fedora base repository    |
+      | enabled | 1                                |
+    And I use repository "dnf-ci-fedora-updates" with configuration
+      | key     | value                            |
+      | name    | DNF CI fedora updates repository |
+      | enabled | 0                                |
+    And I use repository "dnf-ci-thirdparty" with configuration
+      | key     | value                            |
+      | name    | DNF CI thirdparty repo, test     |
+      | enabled | 0                                |
+
+
+Scenario: Test actions_attrs, variables, actions_variables, configuration options, repos options, defining new repository, logging
+  Given I create and substitute file "/etc/dnf/libdnf5-plugins/actions.d/test.actions" with
+    """
+    post_base_setup:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_post_base_setup.py {context.dnf.installroot}/actions.log
+    repos_configured:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_configured.py {context.dnf.installroot}/actions.log
+    """
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_post_base_setup.py" with
+"""
+from json_test_utils import *
+
+send_request({"op": "get", "domain": "actions_attrs", "args": {"key": "*"}})
+check_reply(
+    'Get the values of all action plugin attributes',
+    {"op": "reply", "requested_op": "get", "domain": "actions_attrs", "status": "OK",
+     "return": {
+         "actions_attrs": [{"key": "pid", "value": "*"},
+                           {"key": "version", "value": "1.*"}]}})
+
+send_request({"op": "get", "domain": "actions_attrs", "args": {"key": "nonexist_attribute"}})
+check_reply(
+    'Requesting the value of a non-existent actions plugin attribute returns empty list',
+    {"op": "reply", "requested_op": "get", "domain": "actions_attrs", "status": "OK",
+     "return": {"actions_attrs": []}})
+
+
+send_request({"op": "set", "domain": "vars", "args": {"name": "test_var1", "value": "value1"}})
+check_reply(
+    'Set new variable "test_var1"',
+    {"op": "reply", "requested_op": "set", "domain": "vars", "status": "OK",
+     "return": {"vars": [{"name": "test_var1", "value": "value1"}]}})
+
+send_request({"op": "set", "domain": "vars", "args": {"name": "test_var2", "value": "value2"}})
+check_reply(
+    'Set new variable "test_var2"',
+    {"op": "reply", "requested_op": "set", "domain": "vars", "status": "OK",
+     "return": {"vars": [{"name": "test_var2", "value": "value2"}]}})
+
+send_request({"op": "set", "domain": "vars", "args": {"name": "test_var1", "value": "new_value1"}})
+check_reply(
+    'Change value of variable "test_var1"',
+    {"op": "reply", "requested_op": "set", "domain": "vars", "status": "OK",
+     "return": {"vars": [{"name": "test_var1", "value": "new_value1"}]}})
+
+send_request({"op": "get", "domain": "vars", "args": {"name": "test_var*"}})
+check_reply(
+    'Get the values of all variables with the name matching "test_var*"',
+    {"op": "reply", "requested_op": "get", "domain": "vars", "status": "OK",
+     "return": {
+         "vars": [{"name": "test_var1", "value": "new_value1"},
+                  {"name": "test_var2", "value": "value2"}]}})
+
+send_request({"op": "set", "domain": "vars", "args": {"name": "test_var2"}})
+check_reply(
+    'Remove (unset) variable "test_var2"',
+    {"op": "reply", "requested_op": "set", "domain": "vars", "status": "OK",
+     "return": {"vars": [{"name": "test_var2"}]}})
+
+send_request({"op": "get", "domain": "vars", "args": {"name": "test_var*"}})
+check_reply(
+    'Get the values of all variables with the name matching "test_var*"',
+    {"op": "reply", "requested_op": "get", "domain": "vars", "status": "OK",
+     "return": {"vars": [{"name": "test_var1", "value": "new_value1"}]}})
+
+send_request({"op": "get", "domain": "vars", "args": {"name": "nonexist_var"}})
+check_reply(
+    'Requesting the value of a non-existent variable returns empty list',
+    {"op": "reply", "requested_op": "get", "domain": "vars", "status": "OK",
+     "return": {"vars": []}})
+
+
+send_request({"op": "set", "domain": "actions_vars", "args": {"name": "test_actions_var1", "value": "value1"}})
+check_reply(
+    'Set new actions variable "test_actions_var1"',
+    {"op": "reply", "requested_op": "set", "domain": "actions_vars", "status": "OK",
+     "return": {"actions_vars": [{"name": "test_actions_var1", "value": "value1"}]}})
+
+send_request({"op": "set", "domain": "actions_vars", "args": {"name": "test_actions_var2", "value": "value2"}})
+check_reply(
+    'Set new actions variable "test_actions_var2"',
+    {"op": "reply", "requested_op": "set", "domain": "actions_vars", "status": "OK",
+     "return": {"actions_vars": [{"name": "test_actions_var2", "value": "value2"}]}})
+
+send_request({"op": "set", "domain": "actions_vars", "args": {"name": "test_actions_var1", "value": "new_value1"}})
+check_reply(
+    'Change value of actions variable "test_actions_var1"',
+    {"op": "reply", "requested_op": "set", "domain": "actions_vars", "status": "OK",
+     "return": {"actions_vars": [{"name": "test_actions_var1", "value": "new_value1"}]}})
+
+send_request({"op": "get", "domain": "actions_vars", "args": {"name": "test_actions_var*"}})
+check_reply(
+    'Get the values of all actions variables with the name matching "test_actions_var*"',
+    {"op": "reply", "requested_op": "get", "domain": "actions_vars", "status": "OK",
+     "return": {
+         "actions_vars": [{"name": "test_actions_var1", "value": "new_value1"},
+                          {"name": "test_actions_var2", "value": "value2"}]}})
+
+send_request({"op": "set", "domain": "actions_vars", "args": {"name": "test_actions_var2"}})
+check_reply(
+    'Remove (unset) actions variable "test_actions_var2"',
+    {"op": "reply", "requested_op": "set", "domain": "actions_vars", "status": "OK",
+     "return": {"actions_vars": [{"name": "test_actions_var2"}]}})
+
+send_request({"op": "get", "domain": "actions_vars", "args": {"name": "test_actions_var*"}})
+check_reply(
+    'Get the values of all actions variables with the name matching "test_actions_var*"',
+    {"op": "reply", "requested_op": "get", "domain": "actions_vars", "status": "OK",
+     "return": {"actions_vars": [{"name": "test_actions_var1", "value": "new_value1"}]}})
+
+send_request({"op": "get", "domain": "actions_vars", "args": {"name": "nonexist_var"}})
+check_reply(
+    'Requesting the value of a non-existent actions variable returns empty list',
+    {"op": "reply", "requested_op": "get", "domain": "actions_vars", "status": "OK",
+     "return": {"actions_vars": []}})
+
+
+send_request({"op": "get", "domain": "conf", "args": {"key": "countme"}})
+check_reply(
+    'Get value of "countme" option',
+    {"op": "reply", "requested_op": "get", "domain": "conf", "status": "OK",
+     "return": {"keys_val": [{"key": "countme", "value": "0"}]}})
+
+send_request({"op": "set", "domain": "conf", "args": {"key": "countme", "value": "1"}})
+check_reply(
+    'Enable "countme" option',
+    {"op": "reply", "requested_op": "set", "domain": "conf", "status": "OK",
+     "return": {"keys_val": [{"key": "countme", "value": "1"}]}})
+
+send_request({"op": "get", "domain": "conf", "args": {"key": "countme"}})
+check_reply(
+    'Get value of "countme" option',
+    {"op": "reply", "requested_op": "get", "domain": "conf", "status": "OK",
+     "return": {"keys_val": [{"key": "countme", "value": "1"}]}})
+"""
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_configured.py" with
+"""
+from json_test_utils import *
+
+send_request({"op": "get", "domain": "actions_vars", "args": {"name": "test_actions_var*"}})
+check_reply(
+    'Get the values of all actions variables with the name matching "test_actions_var*" in next hook',
+    {"op": "reply", "requested_op": "get", "domain": "actions_vars", "status": "OK",
+     "return": {"actions_vars": [{"name": "test_actions_var1", "value": "new_value1"}]}})
+
+
+send_request({"op": "set", "domain": "conf", "args": {"key": "dnf-ci-fedora*.enabled", "value": "1"}})
+check_reply(
+    'Enable "dnf-ci-fedora*" repos',
+    {"op": "reply", "requested_op": "set", "domain": "conf", "status": "OK",
+     "return": {
+         "keys_val": [{"key": "dnf-ci-fedora.enabled", "value": "1"},
+                      {"key": "dnf-ci-fedora-updates.enabled", "value": "1"}]}})
+
+send_request(
+    {"op": "new", "domain": "repoconf",
+     "args": {
+         "keys_val": [{"key": "repo_id", "value": "test-repo"},
+                      {"key": "name", "value": "Test repository"},
+                      {"key": "enabled", "value": "false"},
+                      {"key": "baseurl", "value": "https://xyz.com/rpm"}]}})
+check_reply(
+    'Define new repo',
+    {"op": "reply", "requested_op": "new", "domain": "repoconf", "status": "OK",
+     "return": {
+         "keys_val": [{"key": "repo_id", "value": "test-repo"},
+                      {"key": "name", "value": "Test repository"},
+                      {"key": "enabled", "value": "false"},
+                      {"key": "baseurl", "value": "https://xyz.com/rpm"}]}})
+
+send_request({"op": "get", "domain": "conf", "args": {"key": "*.enabled"}})
+check_reply(
+    'Get "enable" for all repos',
+    {"op": "reply", "requested_op": "get", "domain": "conf", "status": "OK",
+     "return": {
+         "keys_val": [{"key": "dnf-ci-fedora.enabled", "value": "1"},
+                      {"key": "dnf-ci-fedora-updates.enabled", "value": "1"},
+                      {"key": "dnf-ci-thirdparty.enabled", "value": "0"},
+                      {"key": "test-repo.enabled", "value": "0"}]}})
+
+
+send_request({"op": "log", "args": {"level": "TRACE", "message": "Test log message 1"}})
+check_reply(
+    'Write TRACE to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "OK"})
+
+send_request({"op": "log", "args": {"level": "DEBUG", "message": "Test log message 2"}})
+check_reply(
+    'Write DEBUG to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "OK"})
+
+send_request({"op": "log", "args": {"level": "INFO", "message": "Test log message 3"}})
+check_reply(
+    'Write INFO to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "OK"})
+
+send_request({"op": "log", "args": {"level": "NOTICE", "message": "Test log message 4"}})
+check_reply(
+    'Write NOTICE to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "OK"})
+
+send_request({"op": "log", "args": {"level": "WARNING", "message": "Test log message 5"}})
+check_reply(
+    'Write WARNING to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "OK"})
+
+send_request({"op": "log", "args": {"level": "ERROR", "message": "Test log message 6"}})
+check_reply(
+    'Write ERROR to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "OK"})
+
+send_request({"op": "log", "args": {"level": "CRITICAL", "message": "Test log message 7"}})
+check_reply(
+    'Write CRITICAL to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "OK"})
+
+send_request({"op": "log", "args": {"level": "BAD_LEVEL", "message": "Test log INFO message"}})
+check_reply(
+    'Write BAD_LEVEL to LOG',
+    {"op": "reply", "requested_op": "log", "domain": "log", "status": "ERROR",
+     "message": "Unknown log level \"BAD_LEVEL\""})
+
+
+send_request({"op": "bad_op", "domain": "conf", "args": {"key": "*.enabled"}})
+check_reply(
+    'Request an unknown op',
+    {"op": "reply", "requested_op": "bad_op", "status": "ERROR",
+     "message": "Unknown operation \"bad_op\""})
+
+send_request({"op": "get", "domain": "bad_domain", "args": {"key": "*.enabled"}})
+check_reply(
+    'Request an unknown domain for \"get\" op',
+    {"op": "reply", "requested_op": "get", "domain":"bad_domain", "status": "ERROR",
+     "message": "Unknown domain \"bad_domain\" for operation \"get\""})
+
+send_request({"op": "set", "domain": "bad_domain", "args": {"key": "*.enabled"}})
+check_reply(
+    'Request an unknown domain for \"set\" op',
+    {"op": "reply", "requested_op": "set", "domain":"bad_domain", "status": "ERROR",
+     "message": "Unknown domain \"bad_domain\" for operation \"set\""})
+
+send_request({"op": "new", "domain": "bad_domain", "args": {"key": "*.enabled"}})
+check_reply(
+    'Request an unknown domain for \"new\" op',
+    {"op": "reply", "requested_op": "new", "domain":"bad_domain", "status": "ERROR",
+     "message": "Unknown domain \"bad_domain\" for operation \"new\""})
+"""
+
+   When I execute dnf with args "repo list --all"
+   Then the exit code is 0
+    And stdout is
+      """
+      repo id               repo name                          status
+      dnf-ci-fedora         DNF CI fedora base repository     enabled
+      dnf-ci-fedora-updates DNF CI fedora updates repository  enabled
+      dnf-ci-thirdparty     DNF CI thirdparty repo, test     disabled
+      test-repo             Test repository                  disabled
+      """
+
+    And file "/actions.log" contents is
+    """
+    Get the values of all action plugin attributes: OK
+    Requesting the value of a non-existent actions plugin attribute returns empty list: OK
+    Set new variable "test_var1": OK
+    Set new variable "test_var2": OK
+    Change value of variable "test_var1": OK
+    Get the values of all variables with the name matching "test_var*": OK
+    Remove (unset) variable "test_var2": OK
+    Get the values of all variables with the name matching "test_var*": OK
+    Requesting the value of a non-existent variable returns empty list: OK
+    Set new actions variable "test_actions_var1": OK
+    Set new actions variable "test_actions_var2": OK
+    Change value of actions variable "test_actions_var1": OK
+    Get the values of all actions variables with the name matching "test_actions_var*": OK
+    Remove (unset) actions variable "test_actions_var2": OK
+    Get the values of all actions variables with the name matching "test_actions_var*": OK
+    Requesting the value of a non-existent actions variable returns empty list: OK
+    Get value of "countme" option: OK
+    Enable "countme" option: OK
+    Get value of "countme" option: OK
+    Get the values of all actions variables with the name matching "test_actions_var*" in next hook: OK
+    Enable "dnf-ci-fedora*" repos: OK
+    Define new repo: OK
+    Get "enable" for all repos: OK
+    Write TRACE to LOG: OK
+    Write DEBUG to LOG: OK
+    Write INFO to LOG: OK
+    Write NOTICE to LOG: OK
+    Write WARNING to LOG: OK
+    Write ERROR to LOG: OK
+    Write CRITICAL to LOG: OK
+    Write BAD_LEVEL to LOG: OK
+    Request an unknown op: OK
+    Request an unknown domain for "get" op: OK
+    Request an unknown domain for "set" op: OK
+    Request an unknown domain for "new" op: OK
+    """
+
+    And file "/var/log/dnf5.log" contains lines
+    """
+    TRACE Actions plugin: Hook in file .* Test log message 1
+    DEBUG Actions plugin: Hook in file .* Test log message 2
+    INFO Actions plugin: Hook in file .* Test log message 3
+    NOTICE Actions plugin: Hook in file .* Test log message 4
+    WARNING Actions plugin: Hook in file .* Test log message 5
+    ERROR Actions plugin: Hook in file .* Test log message 6
+    CRITICAL Actions plugin: Hook in file .* Test log message 7
+    """
+
+
+Scenario: Test get packages and get trans_packages
+  Given I create and substitute file "/etc/dnf/libdnf5-plugins/actions.d/test.actions" with
+    """
+    repos_configured:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_configured.py {context.dnf.installroot}/actions.log
+    repos_loaded:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_loaded.py {context.dnf.installroot}/actions.log
+    pre_transaction:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_pre_trans.py {context.dnf.installroot}/actions.log
+    """
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_configured.py" with
+"""
+from json_test_utils import *
+
+send_request({"op": "set", "domain": "conf", "args": {"key": "dnf-ci-fedora-updates.enabled", "value": "1"}})
+check_reply(
+    'Enable dnf-ci-fedora-updates repo',
+    {"op": "reply", "requested_op": "set", "domain": "conf", "status": "OK",
+     "return": {
+         "keys_val": [{"key": "dnf-ci-fedora-updates.enabled", "value": "1"}]}})
+"""
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_loaded.py" with
+"""
+from json_test_utils import *
+
+send_request(
+    {"op": "get", "domain": "packages",
+     "args": {
+         "filters": [{"key": "name", "value": "f*", "operator": "GLOB"},
+                     {"key": "version", "value": "1.3.3", "operator": "GTE"}],
+         "output": ["name", "version", "arch", "release", "repo_id"]}})
+check_reply(
+    'Get packages with name "f*" and version >= "1.3.3"',
+    {"op": "reply", "requested_op": "get", "domain": "packages", "status": "OK", "return": {"packages": [
+        {"name": "flac", "arch": "src", "version": "1.3.3", "release": "1.fc29", "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac", "arch": "x86_64", "version": "1.3.3", "release": "1.fc29", "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac", "arch": "src", "version": "1.3.3", "release": "2.fc29", "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac", "arch": "x86_64", "version": "1.3.3", "release": "2.fc29", "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac", "arch": "src", "version": "1.3.3", "release": "3.fc29", "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac", "arch": "x86_64", "version": "1.3.3", "release": "3.fc29", "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac-libs", "arch": "x86_64", "version": "1.3.3", "release": "1.fc29",
+         "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac-libs", "arch": "x86_64", "version": "1.3.3", "release": "2.fc29",
+         "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "flac-libs", "arch": "x86_64", "version": "1.3.3", "release": "3.fc29",
+         "repo_id": "dnf-ci-fedora-updates"},
+        {"name": "fedora-release", "arch": "noarch", "version": "29", "release": "1", "repo_id": "dnf-ci-fedora"},
+        {"name": "fedora-release", "arch": "src", "version": "29", "release": "1", "repo_id": "dnf-ci-fedora"},
+        {"name": "filesystem", "arch": "src", "version": "3.9", "release": "2.fc29", "repo_id": "dnf-ci-fedora"},
+        {"name": "filesystem", "arch": "x86_64", "version": "3.9", "release": "2.fc29", "repo_id": "dnf-ci-fedora"},
+        {"name": "filesystem-content", "arch": "x86_64", "version": "3.9", "release": "2.fc29",
+         "repo_id": "dnf-ci-fedora"}]}})
+
+send_request(
+    {"op": "get", "domain": "packages",
+     "args": {
+         "filters": [{"key": "name", "value": "lame*", "operator": "GLOB"}],
+         "output": ["nevra"]}})
+check_reply(
+    'Get packages with name "lame*"',
+    {"op": "reply", "requested_op": "get", "domain": "packages", "status": "OK", "return": {"packages": [
+        {"nevra": "lame-libs-3.100-5.fc29.x86_64"}, {"nevra": "lame-libs-3.100-4.fc29.x86_64"}]}})
+
+send_request(
+    {"op": "get", "domain": "packages",
+     "args": {
+         "params": [{"key": "IGNORE_EXCLUDES"}],
+         "filters": [{"key": "name", "value": "lame*", "operator": "GLOB"}],
+         "output": ["nevra"]}})
+check_reply(
+    'Get packages with name "lame*", ignore excludes',
+    {"op": "reply", "requested_op": "get", "domain": "packages", "status": "OK", "return": {"packages": [
+        { "nevra": "lame-3.100-5.fc29.src" }, { "nevra": "lame-3.100-5.fc29.x86_64" },
+        { "nevra": "lame-libs-3.100-5.fc29.x86_64" }, { "nevra": "lame-3.100-4.fc29.src" },
+        { "nevra": "lame-3.100-4.fc29.x86_64" }, { "nevra": "lame-libs-3.100-4.fc29.x86_64"}]}})
+
+send_request(
+    {"op": "get", "domain": "packages",
+     "args": {
+         "params": [{"key": "UNKNOWN"}],
+         "filters": [{"key": "name", "value": "lame*", "operator": "GLOB"}],
+         "output": ["nevra"]}})
+check_reply(
+    'Get packages with name "lame*", use unknown key in params',
+    {"op": "reply", "requested_op": "get", "domain": "packages", "status": "ERROR",
+     "message": "Bad key \"UNKNOWN\" for params"})
+
+send_request(
+    {"op": "get", "domain": "packages",
+     "args": {
+         "filters": [{"key": "direction", "value": "IN"}],
+         "output": ["nevra", "direction"]}})
+check_reply(
+    'Get packages, use "direction" output outside "trans_packages" domain',
+    {"op": "reply", "requested_op": "get", "domain": "packages", "status": "ERROR",
+     "message": "Requested output \"direction\" outside the domain \"trans_packages\""})
+
+send_request(
+    {"op": "get", "domain": "packages",
+     "args": {
+         "filters": [{"key": "direction", "value": "IN"}],
+         "output": ["nevra", "action"]}})
+check_reply(
+    'Get packages, use "action" output outside "trans_packages" domain',
+    {"op": "reply", "requested_op": "get", "domain": "packages", "status": "ERROR",
+     "message": "Requested output \"action\" outside the domain \"trans_packages\""})
+
+send_request(
+    {"op": "get", "domain": "packages",
+     "args": {
+         "filters": [{"key": "direction", "value": "IN"}],
+         "output": ["name"]}})
+check_reply(
+    'Get packages, use "direction" filter outside "trans_packages" domain',
+    {"op": "reply", "requested_op": "get", "domain": "packages", "status": "ERROR",
+     "message": "Used \"direction\" filter outside the \"trans_packages\" domain"})
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [{"key": "direction", "value": "IN"}],
+         "output": ["nevra"]}})
+check_reply(
+    'Get trans_packages outside "pre_transaion" and "post_transaction" hooks',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "ERROR",
+     "message": "Domain \"trans_packages\" used outside the hooks \"pre_transaction\" and \"post_transaction\""})
+"""
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_pre_trans.py" with
+"""
+from json_test_utils import *
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [{"key": "direction", "value": "IN"}, {"key": "arch", "value": "x86_64"}],
+         "output": ["action", "name", "version", "repo_id"]}})
+check_reply(
+    'Get "IN" trans_packages with arch == "x86_64"',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "OK",
+     "return": {
+         "trans_packages": [
+             {"action": "I", "name": "glibc", "version": "2.28", "repo_id": "dnf-ci-fedora-updates"},
+             {"action": "I", "name": "glibc-all-langpacks", "version": "2.28", "repo_id": "dnf-ci-fedora-updates"},
+             {"action": "I", "name": "glibc-common", "version": "2.28", "repo_id": "dnf-ci-fedora-updates"},
+             {"action": "I", "name": "filesystem", "version": "3.9", "repo_id": "dnf-ci-fedora"}]}})
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [{"key": "direction", "value": "OUT"}],
+         "output": ["action", "name", "version", "repo_id"]}})
+check_reply(
+    'Get "OUT" trans_packages',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "OK",
+     "return": {"trans_packages": []}})
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [{"key": "direction", "value": "UNKNOWN"}],
+         "output": ["action", "name", "version", "repo_id"]}})
+check_reply(
+    'Get trans_packages, unknown value for direction filter',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "ERROR",
+     "message": "Bad \"UNKNOWN\" value for \"direction\" filter"})
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [
+             {"key": "name", "value": "glibc"}, {"key": "arch", "value": "x86_64"}, {"key": "version", "value": "2.28"},
+             {"key": "release", "value": "26.fc29"}, {"key": "epoch", "value": "0"},
+             {"key": "nevra", "value": "glibc-0:2.28-26.fc29.x86_64"}, {"key": "repo_id", "value": "dnf-ci-fedora-updates"}],
+         "output": ["action", "name", "version", "repo_id"]}})
+check_reply(
+    'Get trans_packages, test filters',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "OK",
+     "return": {
+         "trans_packages": [
+             {"action": "I", "name": "glibc", "version": "2.28", "repo_id": "dnf-ci-fedora-updates"}]}})
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [{"key": "name", "value": "glibc"}],
+         "output": [
+             "direction", "action", "name", "arch", "unknown", "version", "release", "epoch", "na", "evr", "nevra",
+             "full_nevra", "download_size", "install_size", "repo_id", "license", "location", "vendor"]}})
+check_reply(
+    'Get attributes of "glibc" trans_package, unknown attribute is ignored',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "OK",
+     "return": {
+         "trans_packages": [
+             {"direction":"IN", "action": "I", "name": "glibc", "arch":"x86_64", "version": "2.28",
+              "release":"26.fc29", "epoch":"0", "na":"glibc.x86_64", "evr":"2.28-26.fc29",
+              "nevra":"glibc-2.28-26.fc29.x86_64", "full_nevra":"glibc-0:2.28-26.fc29.x86_64",
+              "download_size":"*", "install_size":"*", "repo_id":"dnf-ci-fedora-updates",
+              "license":"LGPLv2+ and LGPLv2+ with exceptions and GPLv2+ and GPLv2+ with exceptions and BSD and Inner-Net and ISC and Public Domain and GFDL",
+              "location":"x86_64/glibc-2.28-26.fc29.x86_64.rpm", "vendor":""}]}})
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [{"key": "unknown_key", "value": "x86_64"}],
+         "output": ["action", "name", "version", "repo_id"]}})
+check_reply(
+    'Get trans_packages, use unknown key in filters',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "ERROR",
+     "message": "Unknown package filter key \"unknown_key\""})
+
+send_request(
+    {"op": "get", "domain": "trans_packages",
+     "args": {
+         "filters": [{"key": "name", "value": "glibc", "operator":"UNKNOWN_OPERATOR"}],
+         "output": ["action", "name", "version", "repo_id"]}})
+check_reply(
+    'Get trans_packages, use unknown compare operator in filters',
+    {"op": "reply", "requested_op": "get", "domain": "trans_packages", "status": "ERROR",
+     "message": "Bad compare operator \"UNKNOWN_OPERATOR\""})
+"""
+
+   When I execute dnf with args "--exclude=lame install glibc"
+   Then the exit code is 0
+    And Transaction is following
+       | Action        | Package                                   |
+       | install       | glibc-0:2.28-26.fc29.x86_64               |
+       | install-dep   | setup-0:2.12.1-1.fc29.noarch              |
+       | install-dep   | glibc-all-langpacks-0:2.28-26.fc29.x86_64 |
+       | install-dep   | glibc-common-0:2.28-26.fc29.x86_64        |
+       | install-dep   | filesystem-0:3.9-2.fc29.x86_64            |
+       | install-dep   | basesystem-0:11-6.fc29.noarch             |
+
+    And file "/actions.log" contents is
+    """
+    Enable dnf-ci-fedora-updates repo: OK
+    Get packages with name "f*" and version >= "1.3.3": OK
+    Get packages with name "lame*": OK
+    Get packages with name "lame*", ignore excludes: OK
+    Get packages with name "lame*", use unknown key in params: OK
+    Get packages, use "direction" output outside "trans_packages" domain: OK
+    Get packages, use "action" output outside "trans_packages" domain: OK
+    Get packages, use "direction" filter outside "trans_packages" domain: OK
+    Get trans_packages outside "pre_transaion" and "post_transaction" hooks: OK
+    Get "IN" trans_packages with arch == "x86_64": OK
+    Get "OUT" trans_packages: OK
+    Get trans_packages, unknown value for direction filter: OK
+    Get trans_packages, test filters: OK
+    Get attributes of "glibc" trans_package, unknown attribute is ignored: OK
+    Get trans_packages, use unknown key in filters: OK
+    Get trans_packages, use unknown compare operator in filters: OK
+    """
+
+
+Scenario: Test get paths of command line packages
+  Given I create and substitute file "/etc/dnf/libdnf5-plugins/actions.d/test.actions" with
+    """
+    pre_add_cmdline_packages:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_pre_add_cmdline_packages.py {context.dnf.installroot}/actions.log
+    """
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_pre_add_cmdline_packages.py" with
+"""
+from json_test_utils import *
+
+send_request(
+    {"op": "get", "domain": "cmdline_packages_paths",
+     "args": {"filters": [{"key": "path", "value": "/local2/*", "operator": "GLOB"}]}})
+check_reply(
+    'Get paths of all cmdline packages with the path matching "/local2/*"',
+    {"op": "reply", "requested_op": "get", "domain": "cmdline_packages_paths", "status": "OK",
+     "return": {"cmdline_packages_paths": ["/local2/packageB.rpm", "/local2/packageC.rpm"]}})
+"""
+
+   When I execute dnf with args "repoquery /local1/packageA.rpm /local2/packageB.rpm /local2/packageC.rpm"
+   Then the exit code is 1
+
+    And file "/actions.log" contents is
+    """
+    Get paths of all cmdline packages with the path matching "/local2/*": OK
+    """
+
+
+Scenario: Test syntax errors (missing attributes, incorrect json, truncated - incomplete input) in json requests
+  Given I create and substitute file "/etc/dnf/libdnf5-plugins/actions.d/test.actions" with
+    """
+    pre_base_setup:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_pre_base_setup.py {context.dnf.installroot}/actions.log
+    post_base_setup:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_post_base_setup.py {context.dnf.installroot}/actions.log
+    repos_configured:::mode=json:/bin/python3 {context.dnf.installroot}/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_configured.py {context.dnf.installroot}/actions.log
+    """
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_pre_base_setup.py" with
+"""
+from json_test_utils import *
+
+send_request({"domain":"vars", "args": {"name": "test_var1", "value": "value1"}})
+check_reply(
+    'Missing "op"',
+    {"op": "reply", "status": "ERROR",
+     "message": "Key \"op\" not found"})
+
+send_request({"op": "set", "args": {"name": "test_var1", "value": "value1"}})
+check_reply(
+    'Missing "domain" for "set" op',
+    {"op": "reply", "requested_op": "set", "status": "ERROR",
+     "message": "Key \"domain\" not found"})
+
+# Send json structure with missing starting '{'
+send_request_string('"op": "set", "args": {"name": "test_var1", "value": "val')
+check_reply("Missing starting '{' char", {})
+"""
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_post_base_setup.py" with
+"""
+from json_test_utils import *
+
+# Send invalid json structure
+send_request_string('{"op": "set", "", "args": {"name": "test_var1", "value": "val')
+check_reply("Invalid json structure", {})
+"""
+
+    And I create file "/etc/dnf/libdnf5-plugins/actions.d/json_hook_repos_configured.py" with
+"""
+from json_test_utils import *
+
+# Send incomplete json structure and close output
+send_request_string('{"op": "set", "args": {"name": "test_var1", "value": "val')
+os.close(1)
+check_reply("Incomplete input", {})
+"""
+
+   When I execute dnf with args "repoquery dwm"
+   Then the exit code is 0
+
+    And file "/actions.log" contents is
+    """
+    Missing "op": OK
+    Missing "domain" for "set" op: OK
+    Missing starting '{' char: OK
+    Invalid json structure: OK
+    Incomplete input: OK
+    """
+
+    And file "/var/log/dnf5.log" contains lines
+    """
+    Syntax error in json request .* Missing starting '{' char
+    Syntax error in json request .* expected
+    Syntax error in json request .* Incomplete input
+    """