(#25) Add a function to "down" the compose

compose.go

@@ -18,6 +18,7 @@ const (
 
 // DockerCompose defines the contract for running Docker Compose
 type DockerCompose interface {
+	Down() execError
 	Invoke() execError
 	WithCommand([]string) DockerCompose
 	WithEnv(map[string]string) DockerCompose
@@ -48,6 +49,31 @@ func NewLocalDockerCompose(filePath string, identifier string) *LocalDockerCompo
 	return dc
 }
 
+// Down executes docker-compose down
+func (dc *LocalDockerCompose) Down() execError {
+	if which(dc.Executable) != nil {
+		panic("Local Docker Compose not found. Is " + dc.Executable + " on the PATH?")
+	}
+
+	abs, err := filepath.Abs(dc.ComposeFilePath)
+	pwd, name := filepath.Split(abs)
+
+	cmds := []string{
+		"-f", name, "down",
+	}
+
+	execErr := execute(pwd, map[string]string{}, dc.Executable, cmds)
+	err = execErr.Error
+	if err != nil {
+		args := strings.Join(dc.Cmd, " ")
+		panic(
+			"Local Docker compose exited abnormally whilst running " +
+				dc.Executable + ": [" + args + "]. " + err.Error())
+	}
+
+	return execErr
+}
+
 // Invoke invokes the docker compose
 func (dc *LocalDockerCompose) Invoke() execError {
 	if which(dc.Executable) != nil {

compose_test.go

@@ -15,9 +15,7 @@ func TestLocalDockerCompose(t *testing.T) {
 	checkIfError(t, err)
 
 	destroyFn := func() {
-		compose.WithCommand([]string{"down"})
-
-		err := compose.Invoke()
+		err := compose.Down()
 		checkIfError(t, err)
 	}
 	defer destroyFn()