Implement 'test' folder

regolith/git_getter.go

@@ -77,7 +77,7 @@ func DownloadGitHubUrl(url string, localPath string) (bool, error) {
 				return false, wrapError(fmt.Sprintf("Failed to fetch the tree %s: %s", leaf.Path, data.Message), err)
 			}
 			for _, l := range data.Tree {
-				if l.Type == "blob" {
+				if l.Type == "blob" && l.Path != "test" {
 					err := downloadLeaf(l, localPath)
 					if err != nil {
 						return false, wrapError(fmt.Sprintf("Failed to download the leaf %s", l.Path), err)

regolith/remote_filters.go

@@ -126,6 +126,17 @@ func InstallDependency(profile Profile, isForced bool) error {
 			}
 		}
 
+		// Remove 'test' folder, which may be installed via git-getter library
+		// This is a workaround for cases where our own getter library is not
+		// able to download the filter.
+		testFolder := path.Join(downloadPath, "test")
+		if _, err := os.Stat(testFolder); err == nil {
+			os.RemoveAll(testFolder)
+			if err != nil {
+				Logger.Debug("Could not remove test folder", err)
+			}
+		}
+
 		// Move filters 'data' folder contents into 'data'
 		filterName := strings.Split(path.Clean(url), "/")[3]
 		localDataPath := path.Join(profile.DataPath, filterName)