Prepare infra to add integration test

Author: cmaglie

internal/integrationtest/compile_4/compile_test.go

@@ -904,56 +904,58 @@ func comparePreprocessGoldenFile(t *testing.T, sketchDir *paths.Path, preprocess
 	require.Equal(t, buf.String(), strings.ReplaceAll(preprocessedSketch, "\r\n", "\n"))
 }
 
-func TestCoreCaching(t *testing.T) {
+func TestBuildCaching(t *testing.T) {
 	env, cli := integrationtest.CreateArduinoCLIWithEnvironment(t)
 	defer env.CleanUp()
 
-	sketchPath, err := paths.New("..", "testdata", "bare_minimum").Abs()
-	require.NoError(t, err)
-
 	// Install Arduino AVR Boards
-	_, _, err = cli.Run("core", "install", "arduino:[email protected]")
+	_, _, err := cli.Run("core", "install", "arduino:[email protected]")
 	require.NoError(t, err)
 
-	// Create temporary cache dir
-	buildCachePath, err := paths.MkTempDir("", "test_build_cache")
-	require.NoError(t, err)
-	defer buildCachePath.RemoveAll()
+	t.Run("CoreCaching", func(t *testing.T) {
+		sketchPath, err := paths.New("..", "testdata", "bare_minimum").Abs()
+		require.NoError(t, err)
 
-	// Build first time
-	_, _, err = cli.Run("compile", "-b", "arduino:avr:uno", "--build-cache-path", buildCachePath.String(), sketchPath.String())
-	require.NoError(t, err)
+		// Create temporary cache dir
+		buildCachePath, err := paths.MkTempDir("", "test_build_cache")
+		require.NoError(t, err)
+		defer buildCachePath.RemoveAll()
 
-	// Find cached core and save timestamp
-	pathList, err := buildCachePath.ReadDirRecursiveFiltered(nil, paths.FilterPrefixes("core.a"))
-	require.NoError(t, err)
-	require.Len(t, pathList, 1)
-	cachedCoreFile := pathList[0]
-	lastUsedPath := cachedCoreFile.Parent().Join(".last-used")
-	require.True(t, lastUsedPath.Exist())
-	coreStatBefore, err := cachedCoreFile.Stat()
-	require.NoError(t, err)
+		// Build first time
+		_, _, err = cli.Run("compile", "-b", "arduino:avr:uno", "--build-cache-path", buildCachePath.String(), sketchPath.String())
+		require.NoError(t, err)
 
-	// Run build again and check timestamp is unchanged
-	_, _, err = cli.Run("compile", "-b", "arduino:avr:uno", "--build-cache-path", buildCachePath.String(), sketchPath.String())
-	require.NoError(t, err)
-	coreStatAfterRebuild, err := cachedCoreFile.Stat()
-	require.NoError(t, err)
-	require.Equal(t, coreStatBefore.ModTime(), coreStatAfterRebuild.ModTime())
+		// Find cached core and save timestamp
+		pathList, err := buildCachePath.ReadDirRecursiveFiltered(nil, paths.FilterPrefixes("core.a"))
+		require.NoError(t, err)
+		require.Len(t, pathList, 1)
+		cachedCoreFile := pathList[0]
+		lastUsedPath := cachedCoreFile.Parent().Join(".last-used")
+		require.True(t, lastUsedPath.Exist())
+		coreStatBefore, err := cachedCoreFile.Stat()
+		require.NoError(t, err)
 
-	// Touch a file of the core and check if the builder invalidate the cache
-	time.Sleep(time.Second)
-	now := time.Now().Local()
-	coreFolder := cli.DataDir().Join("packages", "arduino", "hardware", "avr", "1.8.6")
-	err = coreFolder.Join("cores", "arduino", "Arduino.h").Chtimes(now, now)
-	require.NoError(t, err)
+		// Run build again and check timestamp is unchanged
+		_, _, err = cli.Run("compile", "-b", "arduino:avr:uno", "--build-cache-path", buildCachePath.String(), sketchPath.String())
+		require.NoError(t, err)
+		coreStatAfterRebuild, err := cachedCoreFile.Stat()
+		require.NoError(t, err)
+		require.Equal(t, coreStatBefore.ModTime(), coreStatAfterRebuild.ModTime())
 
-	// Run build again, to verify that the builder rebuilds core.a
-	_, _, err = cli.Run("compile", "-b", "arduino:avr:uno", "--build-cache-path", buildCachePath.String(), sketchPath.String())
-	require.NoError(t, err)
-	coreStatAfterTouch, err := cachedCoreFile.Stat()
-	require.NoError(t, err)
-	require.NotEqual(t, coreStatBefore.ModTime(), coreStatAfterTouch.ModTime())
+		// Touch a file of the core and check if the builder invalidate the cache
+		time.Sleep(time.Second)
+		now := time.Now().Local()
+		coreFolder := cli.DataDir().Join("packages", "arduino", "hardware", "avr", "1.8.6")
+		err = coreFolder.Join("cores", "arduino", "Arduino.h").Chtimes(now, now)
+		require.NoError(t, err)
+
+		// Run build again, to verify that the builder rebuilds core.a
+		_, _, err = cli.Run("compile", "-b", "arduino:avr:uno", "--build-cache-path", buildCachePath.String(), sketchPath.String())
+		require.NoError(t, err)
+		coreStatAfterTouch, err := cachedCoreFile.Stat()
+		require.NoError(t, err)
+		require.NotEqual(t, coreStatBefore.ModTime(), coreStatAfterTouch.ModTime())
+	})
 }
 
 func TestMergeSketchWithBootloader(t *testing.T) {