GODT-1813: Cleanup old go-imap cache files

internal/locations/locations.go

@@ -193,6 +193,10 @@ func (l *Locations) getLogsPath() string {
 	return filepath.Join(l.userCache, "logs")
 }
 
+func (l *Locations) getGoIMAPCachePath() string {
+	return filepath.Join(l.userConfig, "cache")
+}
+
 func (l *Locations) getUpdatesPath() string {
 	// In order to properly update Bridge 1.6.X and higher we need to
 	// change the launcher first. Since this is not part of automatic
@@ -235,3 +239,8 @@ func (l *Locations) Clean() error {
 		l.getGluonPath(),
 	).Do()
 }
+
+// CleanGoIMAPCache removes all cache data from the go-imap implementation.
+func (l *Locations) CleanGoIMAPCache() error {
+	return files.Remove(l.getGoIMAPCachePath()).Do()
+}

internal/locations/locations_test.go

@@ -108,6 +108,29 @@ func TestCleanRemovesUnexpectedFilesAndFolders(t *testing.T) {
 	assert.NoFileExists(t, filepath.Join(l.userCache, "dir3", "dir4", "unexpected5.txt"))
 }
 
+func TestRemoveOldGoIMAPCacheFolders(t *testing.T) {
+	l := newTestLocations(t)
+
+	createFilesInDir(t,
+		l.getGoIMAPCachePath(),
+		"foo",
+		"bar",
+	)
+
+	require.FileExists(t, filepath.Join(l.getGoIMAPCachePath(), "foo"))
+	require.FileExists(t, filepath.Join(l.getGoIMAPCachePath(), "bar"))
+
+	assert.NoError(t, l.CleanGoIMAPCache())
+
+	assert.DirExists(t, l.getSettingsPath())
+	assert.DirExists(t, l.getLogsPath())
+	assert.DirExists(t, l.getUpdatesPath())
+
+	assert.NoFileExists(t, filepath.Join(l.getGoIMAPCachePath(), "foo"))
+	assert.NoFileExists(t, filepath.Join(l.getGoIMAPCachePath(), "bar"))
+	assert.NoDirExists(t, l.getGoIMAPCachePath())
+}
+
 func newFakeAppDirs(t *testing.T) *fakeAppDirs {
 	return &fakeAppDirs{
 		configDir: t.TempDir(),