[ignoring-somethings] Add unit test

Author: woojiahao

ignoring_somethings/tests/specs/not_pattern_matching.yml

@@ -0,0 +1,18 @@
+initialization:
+  steps:
+    - type: commit
+      empty: true
+      message: Empty commit
+      id: start
+    - type: new-file
+      filename: .gitignore
+      contents: |
+        many/*
+        !many/file22.txt
+        ignore_me.txt
+        this/is/very/nested/runaway.txt
+    - type: add
+      files:
+        - .gitignore
+    - type: commit
+      message: Add .gitignore

ignoring_somethings/tests/test_verify.py

@@ -3,6 +3,7 @@
 from ..verify import (
     NOT_IGNORING_IGNORE_ME,
     NOT_IGNORING_RUNAWAY,
+    NOT_PATTERN_MATCHING_RUNAWAY,
     STILL_HIDING,
     STILL_IGNORING_FILE_22,
     verify,
@@ -34,3 +35,12 @@ def test_no_change():
                 NOT_IGNORING_RUNAWAY,
             ],
         )
+
+
+def test_not_pattern_matching():
+    with loader.load("specs/not_pattern_matching.yml", "start") as output:
+        assert_output(
+            output,
+            GitAutograderStatus.UNSUCCESSFUL,
+            [NOT_PATTERN_MATCHING_RUNAWAY],
+        )