speccpu/x264: add recompile_mc_src to simplify code

test/test_spec.py

@@ -1,9 +1,11 @@
 from pathlib import Path
 from unittest import mock
+from unittest.mock import mock_open, patch
 
 import pytest
 
 from speccpu import SPEC, check_bench_dir, find_build
+from speccpu.x264 import recompile_mc_src
 
 
 class TestFindBuild:
@@ -169,3 +171,98 @@ class TestCheckBenchDir:
         (bench_dir / "RUN").mkdir()
 
         assert check_bench_dir(bench_dir) is False
+
+
+@pytest.fixture
+def mock_build_path():
+    return Path("/mock/build/path")
+
+
+@pytest.fixture
+def mock_spec_env():
+    return {"CC": "gcc", "CFLAGS": "-O2"}
+
+
+@pytest.fixture
+def mock_mc_path(mock_build_path):
+    return Path("/mock/build/path/x264_src/common/mc.c")
+
+
+def test_recompile_mc_src(mock_build_path, mock_spec_env, mock_mc_path):
+    test_mc_src = "test source code"
+
+    with (
+        patch("speccpu.x264.get_mc_path", return_value=mock_mc_path) as mock_get_path,
+        patch("builtins.open", mock_open()) as mock_file,
+        patch("speccpu.x264.recompile_mc") as mock_recompile,
+        patch.object(Path, "exists", return_value=True),
+        patch.object(Path, "is_file", return_value=True),
+    ):
+
+        # Configure recompile_mc mock to return a path
+        mock_exe_path = Path("/mock/build/path/x264_s")
+        mock_recompile.return_value = mock_exe_path
+
+        # Call the function under test
+        result = recompile_mc_src(test_mc_src, mock_build_path, mock_spec_env)
+
+        # Verify the function behavior
+        mock_get_path.assert_called_once_with(mock_build_path)
+        mock_file.assert_called_once_with(mock_mc_path, "w")
+        mock_file().write.assert_called_once_with(test_mc_src)
+        mock_recompile.assert_called_once_with(
+            mock_mc_path, mock_build_path, mock_spec_env
+        )
+
+
+def test_recompile_mc_src_file_not_exists(mock_build_path, mock_spec_env, mock_mc_path):
+    test_mc_src = "test source code"
+
+    with (
+        patch("speccpu.x264.get_mc_path", return_value=mock_mc_path),
+        patch.object(Path, "exists", return_value=False),
+    ):
+
+        # Test that the function raises an assertion error when file doesn't exist
+        with pytest.raises(AssertionError):
+            recompile_mc_src(test_mc_src, mock_build_path, mock_spec_env)
+
+
+def test_recompile_mc_src_exe_not_exists(mock_build_path, mock_spec_env, mock_mc_path):
+    test_mc_src = "test source code"
+
+    with (
+        patch("speccpu.x264.get_mc_path", return_value=mock_mc_path) as mock_get_path,
+        patch("builtins.open", mock_open()) as mock_file,
+        patch("speccpu.x264.recompile_mc") as mock_recompile,
+        patch.object(Path, "exists", side_effect=[True, False]),
+        patch.object(Path, "is_file", return_value=True),
+    ):
+
+        # Configure recompile_mc mock to return a path
+        mock_exe_path = Path("/mock/build/path/x264_s")
+        mock_recompile.return_value = mock_exe_path
+
+        # Test that the function raises an assertion error when exe doesn't exist
+        with pytest.raises(AssertionError):
+            recompile_mc_src(test_mc_src, mock_build_path, mock_spec_env)
+
+
+def test_recompile_mc_src_exe_not_file(mock_build_path, mock_spec_env, mock_mc_path):
+    test_mc_src = "test source code"
+
+    with (
+        patch("speccpu.x264.get_mc_path", return_value=mock_mc_path) as mock_get_path,
+        patch("builtins.open", mock_open()) as mock_file,
+        patch("speccpu.x264.recompile_mc") as mock_recompile,
+        patch.object(Path, "exists", return_value=True),
+        patch.object(Path, "is_file", return_value=False),
+    ):
+
+        # Configure recompile_mc mock to return a path
+        mock_exe_path = Path("/mock/build/path/x264_s")
+        mock_recompile.return_value = mock_exe_path
+
+        # Test that the function raises an assertion error when exe is not a file
+        with pytest.raises(AssertionError):
+            recompile_mc_src(test_mc_src, mock_build_path, mock_spec_env)