Function TestRunBuildFromGitHubSpecialCase

cli/command/image/build_test.go:121–131

TestRunBuildFromGitHubSpecialCase tests that build contexts starting with `github.com/` are special-cased, and the build command attempts to clone the remote repo. TODO: test "context selection" logic directly when runBuild is refactored to support testing (ex: docker/cli#294)

(t *testing.T)

// TODO: test "context selection" logic directly when runBuild is refactored
// to support testing (ex: docker/cli#294)
func TestRunBuildFromGitHubSpecialCase(t *testing.T) {
	t.Setenv("DOCKER_BUILDKIT", "0")
	cmd := newBuildCommand(test.NewFakeCli(&fakeClient{}))
	// Clone a small repo that exists so git doesn't prompt for credentials
	cmd.SetArgs([]string{"github.com/docker/for-win"})
	cmd.SetOut(io.Discard)
	cmd.SetErr(io.Discard)
	err := cmd.Execute()
	assert.ErrorContains(t, err, "unable to prepare context")
	assert.ErrorContains(t, err, "docker-build-git")
}

// TestRunBuildFromLocalGitHubDir tests that a local directory
// starting with `github.com` takes precedence over the `github.com` special