Add a multi-language mutation tester that writes .metrics/mutate for uml-viewer.

2026-11-06 18:23:50 +00:00 · 2026-09-30 10:40:54 -05:00
commit bf42bd22e7
24 changed files with 3201 additions and 0 deletions
@@ -0,0 +1,57 @@
+from mutator.coverage import covered_lines
+
+
+def test_jacoco_marks_lines_with_covered_instructions(tmp_path):
+    report = tmp_path / "target" / "site" / "jacoco" / "jacoco.xml"
+    report.parent.mkdir(parents=True)
+    report.write_text(
+        """<?xml version="1.0"?>
+<report name="demo">
+  <package name="demo">
+    <sourcefile name="Board.java">
+      <line nr="3" mi="0" ci="2" mb="0" cb="0"/>
+      <line nr="4" mi="4" ci="0" mb="1" cb="0"/>
+      <line nr="5" mi="0" ci="0" mb="0" cb="1"/>
+    </sourcefile>
+  </package>
+</report>
+""",
+        encoding="utf-8",
+    )
+    source = tmp_path / "src" / "demo" / "Board.java"
+    source.parent.mkdir(parents=True)
+    source.write_text("package demo;\nclass Board {}\n", encoding="utf-8")
+    assert covered_lines(tmp_path, source, "java") == {3, 5}
+
+
+def test_go_profile_marks_hit_lines(tmp_path):
+    profile = tmp_path / "target" / "coverage" / "go" / "coverage.out"
+    profile.parent.mkdir(parents=True)
+    profile.write_text(
+        "mode: set\n"
+        "demo/widget.go:2.1,4.2 1 1\n"
+        "demo/widget.go:5.1,6.2 1 0\n",
+        encoding="utf-8",
+    )
+    source = tmp_path / "demo" / "widget.go"
+    source.parent.mkdir()
+    source.write_text("package demo\nfunc Run() {}\n", encoding="utf-8")
+    assert covered_lines(tmp_path, source, "go") == {2, 3, 4}
+    assert covered_lines(tmp_path, tmp_path / "other" / "missing.go", "go") is None
+    empty = tmp_path / "empty"
+    empty.mkdir()
+    assert covered_lines(empty, empty / "demo" / "widget.go", "go") is None
+
+
+def test_lcov_marks_executed_lines(tmp_path):
+    report = tmp_path / "target" / "coverage" / "python" / "lcov.info"
+    report.parent.mkdir(parents=True)
+    report.write_text(
+        "SF:src/demo/app.py\nDA:1,3\nDA:2,0\nend_of_record\n",
+        encoding="utf-8",
+    )
+    source = tmp_path / "src" / "demo" / "app.py"
+    source.parent.mkdir(parents=True)
+    source.write_text("def place():\n    return 1\n", encoding="utf-8")
+    assert covered_lines(tmp_path, source, "python") == {1}
+    assert covered_lines(tmp_path, source, "clojure") == {1}