1 files changed, 139 insertions, 0 deletions
diff --git a/tools/lint/test/test_clang_format.py b/tools/lint/test/test_clang_format.py
new file mode 100644
index 0000000000..809280601d
--- /dev/null
+++ b/tools/lint/test/test_clang_format.py
@@ -0,0 +1,139 @@
+import mozunit
+from conftest import build
+
+LINTER = "clang-format"
+fixed = 0
+
+
+def test_good(lint, config, paths):
+    results = lint(paths("good/"), root=build.topsrcdir, use_filters=False)
+    print(results)
+    assert len(results) == 0
+
+    results = lint(paths("good/"), root=build.topsrcdir, use_filters=False, fix=True)
+    assert fixed == len(results)
+
+
+def test_basic(lint, config, paths):
+    results = lint(paths("bad/bad.cpp"), root=build.topsrcdir, use_filters=False)
+    print(results)
+    assert len(results) == 1
+
+    assert "Reformat C/C++" in results[0].message
+    assert results[0].level == "warning"
+    assert results[0].lineno == 1
+    assert results[0].column == 0
+    assert "bad.cpp" in results[0].path
+    assert (
+        results[0].diff
+        == """\
+-int  main ( ) { 
+-
+-return 0;   
+-
+-
+-}
++int main() { return 0; }
+"""  # noqa
+    )
+
+
+def test_dir(lint, config, paths):
+    results = lint(paths("bad/"), root=build.topsrcdir, use_filters=False)
+    print(results)
+    assert len(results) == 5
+
+    assert "Reformat C/C++" in results[0].message
+    assert results[0].level == "warning"
+    assert results[0].lineno == 1
+    assert results[0].column == 0
+    assert "bad.cpp" in results[0].path
+    assert (
+        results[0].diff
+        == """\
+-int  main ( ) { 
+-
+-return 0;   
+-
+-
+-}
++int main() { return 0; }
+"""  # noqa
+    )
+
+    assert "Reformat C/C++" in results[1].message
+    assert results[1].level == "warning"
+    assert results[1].lineno == 1
+    assert results[1].column == 0
+    assert "bad2.c" in results[1].path
+    assert (
+        results[1].diff
+        == """\
+-#include "bad2.h"
+-
+-
+-int bad2() {
++#include "bad2.h"
++
++int bad2() {
+"""
+    )
+
+    assert "Reformat C/C++" in results[2].message
+    assert results[2].level == "warning"
+    assert results[2].lineno == 5
+    assert results[2].column == 0
+    assert "bad2.c" in results[2].path
+    assert (
+        results[2].diff
+        == """\
+-  int a =2;
++  int a = 2;
+"""
+    )
+
+    assert "Reformat C/C++" in results[3].message
+    assert results[3].level == "warning"
+    assert results[3].lineno == 6
+    assert results[3].column == 0
+    assert "bad2.c" in results[3].path
+    assert (
+        results[3].diff
+        == """\
+-  return a;
+-
+-}
++  return a;
++}
+"""
+    )
+
+    assert "Reformat C/C++" in results[4].message
+    assert results[4].level == "warning"
+    assert results[4].lineno == 1
+    assert results[4].column == 0
+    assert "bad2.h" in results[4].path
+    assert (
+        results[4].diff
+        == """\
+-int bad2(void );
++int bad2(void);
+"""
+    )
+
+
+def test_fixed(lint, create_temp_file):
+
+    contents = """int  main ( ) { \n
+return 0; \n
+
+}"""
+
+    path = create_temp_file(contents, "ignore.cpp")
+    lint([path], use_filters=False, fix=True)
+
+    assert fixed == 1
+
+
+if __name__ == "__main__":
+    mozunit.main()