Function TestWriteTempFileAtomic_FileIsSynced

repo/content/write_temp_file_test.go:119–143

TestWriteTempFileAtomic_FileIsSynced verifies that Sync is called after writing data to the temporary file.

(t *testing.T)

// TestWriteTempFileAtomic_FileIsSynced verifies that Sync is called after
// writing data to the temporary file.
func TestWriteTempFileAtomic_FileIsSynced(t *testing.T) {
	t.Parallel()

	var mockedFile mockFileSynced

	dir := t.TempDir()
	data := []byte("synced-content")

	mfs := mockfs{
		createWrapper: func(f file) file {
			mockedFile.file = f

			return &mockedFile
		},
	}

	name, err := writeTempFileAtomicImp(mfs, dir, data)
	require.NoError(t, err)
	require.True(t, mockedFile.synced.Load())

	// Open a new handle to avoid OS read-cache of the same descriptor.
	b, err := os.ReadFile(name)
	require.NoError(t, err)
	require.Equal(t, data, b)
}

// TestWriteTempFileAtomic_NoTempFilesLeft verifies that writeTempFileAtomic
// does not leak the temporary file after a successful call — the caller is