Add unit tests for NewAppConfig composeFiles

pkg/config/app_config_test.go

@@ -0,0 +1,50 @@
+package config
+
+import (
+	"testing"
+)
+
+func TestDockerComposeCommandNoFiles(t *testing.T) {
+	composeFiles := []string{}
+	conf, err := NewAppConfig("name", "version", "commit", "date", "buildSource", false, composeFiles)
+
+	if err != nil {
+		t.Fatalf("Unexpected error: %s", err)
+	}
+
+	actual := conf.UserConfig.CommandTemplates.DockerCompose
+	expected := "docker-compose"
+	if actual != expected {
+		t.Fatalf("Expected %s but got %s", expected, actual)
+	}
+}
+
+func TestDockerComposeCommandSingleFile(t *testing.T) {
+	composeFiles := []string{"one.yml"}
+	conf, err := NewAppConfig("name", "version", "commit", "date", "buildSource", false, composeFiles)
+
+	if err != nil {
+		t.Fatalf("Unexpected error: %s", err)
+	}
+
+	actual := conf.UserConfig.CommandTemplates.DockerCompose
+	expected := "docker-compose -f one.yml"
+	if actual != expected {
+		t.Fatalf("Expected %s but got %s", expected, actual)
+	}
+}
+
+func TestDockerComposeCommandMultipleFiles(t *testing.T) {
+	composeFiles := []string{"one.yml", "two.yml", "three.yml"}
+	conf, err := NewAppConfig("name", "version", "commit", "date", "buildSource", false, composeFiles)
+
+	if err != nil {
+		t.Fatalf("Unexpected error: %s", err)
+	}
+
+	actual := conf.UserConfig.CommandTemplates.DockerCompose
+	expected := "docker-compose -f one.yml -f two.yml -f three.yml"
+	if actual != expected {
+		t.Fatalf("Expected %s but got %s", expected, actual)
+	}
+}