test: adding shortened git commit hash tests

Author: DeveloperC286

conventional_commits_linter/end-to-end-tests/features/from-shortened-commit-hash.feature

@@ -0,0 +1,37 @@
+Feature: A shortened Git commit hash can be provided as an argument to indicate where to start taking the range of commits from till HEAD, instead of a full Git commit hash.
+
+
+  Scenario Outline: A shortened and full Git commit hash can be used interchangeably.
+    Given the repository "<repository>" is cloned and checked out at the commit "<checkout_commit>".
+    When the argument --from-commit-hash is provided as "<from_commit_hash>".
+	Then the linting passes.
+	Given the arguments are reset.
+    When the argument --from-commit-hash is provided as "<from_commit_hash>".
+	Then the linting passes.
+
+
+    Examples:
+      | repository                                    | checkout_commit                          | from_commit_hash                         | shortened_from_commit_hash |
+      | https://github.com/danielduarte/diffparse.git | df6be23b79af66d3684fb27719020e1ce587f4b8 | 4f6bf53139fe66f61bd05893bcc9de6e96400c5c | 4f6bf53 |
+
+
+  Scenario Outline: The shortened Git commit hash has no matches, so an error is returned.
+    Given the repository "<repository>" is cloned and checked out at the commit "<checkout_commit>".
+    When the argument --from-commit-hash is provided as "<from_shortened_commit_hash>".
+    Then their is a could not find shortened commit hash "<from_shortened_commit_hash>" error.
+
+
+    Examples:
+      | repository                              | checkout_commit                          | from_shortened_commit_hash |
+      | https://gitlab.com/dmfay/massive-js.git | 482c364acf5505b81c55245fac0472890d351662 | 3f235ee                    |
+
+
+  Scenario Outline: The shortened Git commit hash is ambiguous as multiple commit hashes match it, so an error is returned.
+    Given the repository "<repository>" is cloned and checked out at the commit "<checkout_commit>".
+    When the argument --from-commit-hash is provided as "<from_shortened_commit_hash>".
+    Then their is a ambiguous shortened commit hash "<from_shortened_commit_hash>" error.
+
+
+    Examples:
+      | repository                         | checkout_commit                          | from_shortened_commit_hash |
+      | https://github.com/yargs/yargs.git | 089417550ef5a5b8ce3578dd2a989191300b64cd | 3f6                        |

conventional_commits_linter/end-to-end-tests/features/steps/given.py

@@ -5,6 +5,11 @@
 from utilities import execute_command
 
 
+@given('the arguments are reset.')
+def reset_arguments(context):
+    context.arguments = ""
+
+
 @given('the context and environment are reset.')
 def reset_context(context):
     context.behave_directory = os.getcwd()
@@ -13,7 +18,7 @@ def reset_context(context):
     context.pre_command = ""
     context.conventional_commits_linter_path = context.behave_directory + \
         "/../../target/debug/conventional_commits_linter"
-    context.arguments = ""
+    reset_arguments(context)
 
     if "GIT_DIR" in os.environ:
         del os.environ["GIT_DIR"]

conventional_commits_linter/end-to-end-tests/features/steps/then.py

@@ -1,3 +1,4 @@
+import re
 from behave import *
 
 from utilities import is_json, execute_conventional_commits_linter
@@ -106,3 +107,37 @@ def then_standard_output_not_valid_json(context):
 @then('standard output is valid JSON.')
 def then_standard_output_valid_json(context):
     assert is_json(context.stdout)
+
+
+@then(
+    'their is a could not find shortened commit hash "{shortened_commit_hash}" error.')
+def then_could_not_find_shortened_commit_hash_error(
+        context, shortened_commit_hash):
+    # Given
+    could_not_find_shortened_commit_hash_error = " ERROR conventional_commits_linter_lib::commits > No commit hashes start with the provided short commit hash \"" + \
+        shortened_commit_hash + "\".\n"
+
+    # When/Then
+    then_linting_fails(context)
+
+    # Then
+    assert context.stderr == could_not_find_shortened_commit_hash_error
+
+
+@then(
+    'their is a ambiguous shortened commit hash "{shortened_commit_hash}" error.')
+def then_ambiguous_shortened_commit_hash_error(context, shortened_commit_hash):
+    # Given
+    ambiguous_shortened_commit_hash_error = re.compile(
+        '^ ERROR conventional_commits_linter_lib::commits > Ambiguous short commit hash, the commit hashes [[](' +
+        shortened_commit_hash +
+        '[a-f0-9]*(, )?)*[]] all start with the provided short commit hash "' +
+        shortened_commit_hash +
+        '".\n$')
+
+    # When/Then
+    then_linting_fails(context)
+
+    # Then
+    assert ambiguous_shortened_commit_hash_error.match(
+        context.stderr) is not None