[push-over] Add base download

Author: woojiahao

push_over/.gitmastery-exercise.json

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+{
+  "exercise_name": "push-over",
+  "tags": [
+    "git-remote",
+    "git-commit",
+    "git-push"
+  ],
+  "is_downloadable": true,
+  "requires_repo": false,
+  "requires_github": true,
+  "resources": {}
+}

push_over/README.md

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+# push-over
+
+<!--- Insert exercise description -->
+
+## Learning outcomes
+
+<!--- Insert exercise learning outcomes -->
+
+## Task
+
+<!--- Insert exercise task, simplify what needs to be done -->
+
+## Verification
+
+Run `gitmastery verify` in this exercise folder.
+
+## Hints
+
+<!--- Insert hints here -->
+<!--- 
+    Use Github Markdown's collapsible content:
+    <details>
+    <summary>...</summary>
+    ...
+    </details>
+-->

push_over/__init__.py

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+import os
+import subprocess
+from sys import exit
+from typing import List, Optional
+
+
+def run_command(command: List[str], verbose: bool) -> Optional[str]:
+    try:
+        result = subprocess.run(
+            command,
+            capture_output=True,
+            text=True,
+            check=True,
+        )
+        if verbose:
+            print(result.stdout)
+        return result.stdout.strip()
+    except subprocess.CalledProcessError as e:
+        if verbose:
+            print(e.stderr)
+        exit(1)
+
+
+def setup(verbose: bool = False):
+    username = run_command(["gh", "api", "user", "-q", ".login"], verbose=verbose)
+    fork_name = f"{username}-gitmastery-push-over"
+
+    has_fork = run_command(
+        [
+            "gh",
+            "repo",
+            "view",
+            fork_name,
+            "--json",
+            "isFork",
+            "--jq",
+            ".isFork",
+        ],
+        verbose,
+    )
+
+    if not has_fork:
+        run_command(
+            [
+                "gh",
+                "repo",
+                "fork",
+                "git-mastery/push-over",
+                "--default-branch-only",
+                "--fork-name",
+                fork_name,
+            ],
+            verbose=verbose,
+        )
+
+    has_clone = os.path.isdir(fork_name)
+
+    if not has_clone:
+        run_command(["gh", "repo", "clone", f"{username}/{fork_name}"], verbose=verbose)

push_over/download.py

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+initialization:
+  steps:
+    - type: commit
+      empty: true
+      message: Empty commit
+      id: start

push_over/tests/__init__.py

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+from git_autograder import GitAutograderTestLoader
+
+from ..verify import verify
+
+REPOSITORY_NAME = "push-over"
+
+loader = GitAutograderTestLoader(__file__, REPOSITORY_NAME, verify)
+
+
+def test():
+    with loader.load("specs/base.yml", "start"):
+        pass

push_over/tests/specs/base.yml

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+from typing import List
+
+from git_autograder import GitAutograderOutput, GitAutograderRepo
+
+
+def verify(repo: GitAutograderRepo) -> GitAutograderOutput:
+    comments: List[str] = []
+
+    # INSERT YOUR GRADING CODE HERE
+
+    return repo.to_output(comments)