Finish problem 0278-first-bad-version

problems/0278-first-bad-version/solution_test.py

@@ -0,0 +1,17 @@
+import pytest
+import solution
+from solution import Solution
+
+
+@pytest.mark.parametrize(
+    "n,bad",
+    [
+        (5, 4),
+        (1, 1),
+        (10, 1),
+        (10, 10),
+    ],
+)
+def test_first_bad_version(n, bad, monkeypatch):
+    monkeypatch.setattr(solution, "isBadVersion", lambda v: v >= bad)
+    assert Solution().firstBadVersion(n) == bad