[conflict-mediator] Add tests

Author: woojiahao

conflict_mediator/tests/specs/base.yml

@@ -4,3 +4,12 @@ initialization:
       empty: true
       message: Empty commit
       id: start
+    - type: new-file
+      filename: script.py
+      contents: |
+        print("Hello Everyone and World!")
+    - type: add
+      files:
+        - script.py
+    - type: commit
+      message: Fix print

conflict_mediator/tests/specs/no_fix.yml

@@ -0,0 +1,15 @@
+initialization:
+  steps:
+    - type: commit
+      empty: true
+      message: Empty commit
+      id: start
+    - type: new-file
+      filename: script.py
+      contents: |
+        print("Hello World!")
+    - type: add
+      files:
+        - script.py
+    - type: commit
+      message: No fix print

conflict_mediator/tests/specs/not_main.yml

@@ -0,0 +1,8 @@
+initialization:
+  steps:
+    - type: commit
+      empty: true
+      message: Empty
+      id: start
+    - type: branch
+      branch-name: bug-fix

conflict_mediator/tests/specs/uncommitted.yml

@@ -0,0 +1,16 @@
+initialization:
+  steps:
+    - type: new-file
+      filename: test.txt
+      contents: |
+        hi
+    - type: add
+      files:
+        - test.txt
+    - type: commit
+      message: Start
+      id: start
+    - type: edit-file
+      filename: test.txt
+      contents: |
+        changed

conflict_mediator/tests/test_verify.py

@@ -1,12 +1,37 @@
-from git_autograder import GitAutograderTestLoader
+from git_autograder import GitAutograderStatus, GitAutograderTestLoader, assert_output
 
-from ..verify import verify
+from ..verify import (
+    MERGE_NOT_RESOLVED,
+    NOT_ON_MAIN,
+    RESET_MESSAGE,
+    UNCOMMITTED_CHANGES,
+    verify,
+)
 
 REPOSITORY_NAME = "conflict-mediator"
 
 loader = GitAutograderTestLoader(__file__, REPOSITORY_NAME, verify)
 
 
-def test():
-    with loader.load("specs/base.yml", "start"):
-        pass
+def test_base():
+    with loader.load("specs/base.yml", "start") as output:
+        assert_output(output, GitAutograderStatus.SUCCESSFUL)
+
+
+def test_no_fix():
+    with loader.load("specs/no_fix.yml", "start") as output:
+        assert_output(
+            output,
+            GitAutograderStatus.UNSUCCESSFUL,
+            [MERGE_NOT_RESOLVED, RESET_MESSAGE],
+        )
+
+
+def test_uncommitted():
+    with loader.load("specs/uncommitted.yml") as output:
+        assert_output(output, GitAutograderStatus.UNSUCCESSFUL, [UNCOMMITTED_CHANGES])
+
+
+def test_not_main():
+    with loader.load("specs/not_main.yml") as output:
+        assert_output(output, GitAutograderStatus.UNSUCCESSFUL, [NOT_ON_MAIN])