Function testChunkNameFormat

backend/chunker/chunker_internal_test.go:68–363

test chunk name parser

(t *testing.T, f *Fs)

// test chunk name parser
func testChunkNameFormat(t *testing.T, f *Fs) {
	saveOpt := f.opt
	defer func() {
		// restore original settings (f is pointer, f.opt is struct)
		f.opt = saveOpt
		_ = f.setChunkNameFormat(f.opt.NameFormat)
	}()

	assertFormat := func(pattern, wantDataFormat, wantCtrlFormat, wantNameRegexp string) {
		err := f.setChunkNameFormat(pattern)
		assert.NoError(t, err)
		assert.Equal(t, wantDataFormat, f.dataNameFmt)
		assert.Equal(t, wantCtrlFormat, f.ctrlNameFmt)
		assert.Equal(t, wantNameRegexp, f.nameRegexp.String())
	}

	assertFormatValid := func(pattern string) {
		err := f.setChunkNameFormat(pattern)
		assert.NoError(t, err)
	}

	assertFormatInvalid := func(pattern string) {
		err := f.setChunkNameFormat(pattern)
		assert.Error(t, err)
	}

	assertMakeName := func(wantChunkName, mainName string, chunkNo int, ctrlType, xactID string) {
		gotChunkName := ""
		assert.NotPanics(t, func() {
			gotChunkName = f.makeChunkName(mainName, chunkNo, ctrlType, xactID)
		}, "makeChunkName(%q,%d,%q,%q) must not panic", mainName, chunkNo, ctrlType, xactID)
		if gotChunkName != "" {
			assert.Equal(t, wantChunkName, gotChunkName)
		}
	}

	assertMakeNamePanics := func(mainName string, chunkNo int, ctrlType, xactID string) {
		assert.Panics(t, func() {
			_ = f.makeChunkName(mainName, chunkNo, ctrlType, xactID)
		}, "makeChunkName(%q,%d,%q,%q) should panic", mainName, chunkNo, ctrlType, xactID)
	}

	assertParseName := func(fileName, wantMainName string, wantChunkNo int, wantCtrlType, wantXactID string) {
		gotMainName, gotChunkNo, gotCtrlType, gotXactID := f.parseChunkName(fileName)
		assert.Equal(t, wantMainName, gotMainName)
		assert.Equal(t, wantChunkNo, gotChunkNo)
		assert.Equal(t, wantCtrlType, gotCtrlType)
		assert.Equal(t, wantXactID, gotXactID)
	}

	const newFormatSupported = false // support for patterns not starting with base name (*)

	// valid formats
	assertFormat(`*.rclone_chunk.###`, `%s.rclone_chunk.%03d`, `%s.rclone_chunk._%s`, `^(.+?)\.rclone_chunk\.(?:([0-9]{3,})|_([a-z][a-z0-9]{2,6}))(?:_([0-9a-z]{4,9})|\.\.tmp_([0-9]{10,13}))?$`)
	assertFormat(`*.rclone_chunk.#`, `%s.rclone_chunk.%d`, `%s.rclone_chunk._%s`, `^(.+?)\.rclone_chunk\.(?:([0-9]+)|_([a-z][a-z0-9]{2,6}))(?:_([0-9a-z]{4,9})|\.\.tmp_([0-9]{10,13}))?$`)
	assertFormat(`*_chunk_#####`, `%s_chunk_%05d`, `%s_chunk__%s`, `^(.+?)_chunk_(?:([0-9]{5,})|_([a-z][a-z0-9]{2,6}))(?:_([0-9a-z]{4,9})|\.\.tmp_([0-9]{10,13}))?$`)
	assertFormat(`*-chunk-#`, `%s-chunk-%d`, `%s-chunk-_%s`, `^(.+?)-chunk-(?:([0-9]+)|_([a-z][a-z0-9]{2,6}))(?:_([0-9a-z]{4,9})|\.\.tmp_([0-9]{10,13}))?$`)
	assertFormat(`*-chunk-#-%^$()[]{}.+-!?:\`, `%s-chunk-%d-%%^$()[]{}.+-!?:\`, `%s-chunk-_%s-%%^$()[]{}.+-!?:\`, `^(.+?)-chunk-(?:([0-9]+)|_([a-z][a-z0-9]{2,6}))-%\^\$\(\)\[\]\{\}\.\+-!\?:\\(?:_([0-9a-z]{4,9})|\.\.tmp_([0-9]{10,13}))?$`)