Extract Plan's InitKube creation [#4]

It's `func initKube` rather than `var initKube = func` because initKube
is not meant to be returned by determineSteps.

internal/helm/plan.go

@@ -93,16 +93,7 @@ func (p *Plan) Execute() error {
 }
 
 var upgrade = func(cfg Config) []Step {
-	steps := make([]Step, 0)
+	steps := initKube(cfg)
-
-	steps = append(steps, &run.InitKube{
-		SkipTLSVerify:  cfg.SkipTLSVerify,
-		Certificate:    cfg.Certificate,
-		APIServer:      cfg.APIServer,
-		ServiceAccount: cfg.ServiceAccount,
-		Token:          cfg.KubeToken,
-		TemplateFile:   kubeConfigTemplate,
-	})
 
 	steps = append(steps, &run.Upgrade{
 		Chart:        cfg.Chart,
@@ -119,6 +110,21 @@ var upgrade = func(cfg Config) []Step {
 }
 
 var del = func(cfg Config) []Step {
+	steps := initKube(cfg)
+	steps = append(steps, &run.Delete{
+		Release: cfg.Release,
+		DryRun:  cfg.DryRun,
+	})
+
+	return steps
+}
+
+var help = func(cfg Config) []Step {
+	help := &run.Help{}
+	return []Step{help}
+}
+
+func initKube(cfg Config) []Step {
 	return []Step{
 		&run.InitKube{
 			SkipTLSVerify:  cfg.SkipTLSVerify,
@@ -128,14 +134,5 @@ var del = func(cfg Config) []Step {
 			Token:          cfg.KubeToken,
 			TemplateFile:   kubeConfigTemplate,
 		},
-		&run.Delete{
-			Release: cfg.Release,
-			DryRun:  cfg.DryRun,
-		},
 	}
 }
-
-var help = func(cfg Config) []Step {
-	help := &run.Help{}
-	return []Step{help}
-}

internal/helm/plan_test.go

@@ -87,11 +87,6 @@ func (suite *PlanTestSuite) TestNewPlanAbortsOnError() {
 
 func (suite *PlanTestSuite) TestUpgrade() {
 	cfg := Config{
-		KubeToken:      "cXVlZXIgY2hhcmFjdGVyCg==",
-		SkipTLSVerify:  true,
-		Certificate:    "b2Ygd29rZW5lc3MK",
-		APIServer:      "123.456.78.9",
-		ServiceAccount: "helmet",
 		ChartVersion: "seventeen",
 		DryRun:       true,
 		Wait:         true,
@@ -103,27 +98,13 @@ func (suite *PlanTestSuite) TestUpgrade() {
 	}
 
 	steps := upgrade(cfg)
-
+	suite.Require().Equal(2, len(steps), "upgrade should return 2 steps")
-	suite.Equal(2, len(steps))
-
 	suite.Require().IsType(&run.InitKube{}, steps[0])
-	init, _ := steps[0].(*run.InitKube)
-
-	var expected Step = &run.InitKube{
-		SkipTLSVerify:  cfg.SkipTLSVerify,
-		Certificate:    cfg.Certificate,
-		APIServer:      cfg.APIServer,
-		ServiceAccount: cfg.ServiceAccount,
-		Token:          cfg.KubeToken,
-		TemplateFile:   kubeConfigTemplate,
-	}
-
-	suite.Equal(expected, init)
 
 	suite.Require().IsType(&run.Upgrade{}, steps[1])
 	upgrade, _ := steps[1].(*run.Upgrade)
 
-	expected = &run.Upgrade{
+	expected := &run.Upgrade{
 		Chart:        cfg.Chart,
 		Release:      cfg.Release,
 		ChartVersion: cfg.ChartVersion,
@@ -174,6 +155,31 @@ func (suite *PlanTestSuite) TestDel() {
 	suite.Equal(expected, actual)
 }
 
+func (suite *PlanTestSuite) TestInitKube() {
+	cfg := Config{
+		KubeToken:      "cXVlZXIgY2hhcmFjdGVyCg==",
+		SkipTLSVerify:  true,
+		Certificate:    "b2Ygd29rZW5lc3MK",
+		APIServer:      "123.456.78.9",
+		ServiceAccount: "helmet",
+	}
+
+	steps := initKube(cfg)
+	suite.Require().Equal(1, len(steps), "initKube should return one step")
+	suite.Require().IsType(&run.InitKube{}, steps[0])
+	init, _ := steps[0].(*run.InitKube)
+
+	expected := &run.InitKube{
+		SkipTLSVerify:  true,
+		Certificate:    "b2Ygd29rZW5lc3MK",
+		APIServer:      "123.456.78.9",
+		ServiceAccount: "helmet",
+		Token:          "cXVlZXIgY2hhcmFjdGVyCg==",
+		TemplateFile:   kubeConfigTemplate,
+	}
+	suite.Equal(expected, init)
+}
+
 func (suite *PlanTestSuite) TestDeterminePlanUpgradeCommand() {
 	cfg := Config{
 		Command: "upgrade",