You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: urlutil_test.go
    path of file: ./repos/moby/builder/remotecontext/urlutil
    
    the code of the file until where you have to start completion: package urlutil // import "github.com/docker/docker/builder/remotecontext/urlutil"

import "testing"

var (
	gitUrls = []string{
		"git://github.com/docker/docker",
		"git@github.com:docker/docker.git",
		"git@bitbucket.org:atlassianlabs/atlassian-docker.git",
		"https://github.co
    
func TestIsGIT(t *testing.T) {
	for _, url := range gitUrls {
		if !IsGitURL(url) {
			t.Fatalf("%q should be detected as valid Git url", url)
		}
	}

	for _, url := range incompleteGitUrls {
		if !IsGitURL(url) {
			t.Fatalf("%q should be detected as valid Git url", url)
		}
	}

	for _, url := range invalidGitUrls {
		if IsGitURL(url) {
			t.Fatalf("%q should not be detected as valid Git prefix", url)
		}
	}
}