Pass --keep-history when so instructed [#24]

internal/helm/config.go

@@ -38,6 +38,7 @@ type Config struct {
 	DryRun             bool     `split_words:"true"`                 // Pass --dry-run to applicable helm commands
 	Wait               bool     ``                                   // Pass --wait to applicable helm commands
 	ReuseValues        bool     `split_words:"true"`                 // Pass --reuse-values to `helm upgrade`
+	KeepHistory        bool     `split_words:"true"`                 // Pass --keep-history to `helm uninstall`
 	Timeout            string   ``                                   // Argument to pass to --timeout in applicable helm commands
 	Chart              string   ``                                   // Chart argument to use in applicable helm commands
 	Release            string   ``                                   // Release argument to use in applicable helm commands

internal/helm/plan.go

@@ -120,8 +120,9 @@ var uninstall = func(cfg Config) []Step {
 		steps = append(steps, depUpdate(cfg)...)
 	}
 	steps = append(steps, &run.Uninstall{
-		Release: cfg.Release,
-		DryRun:  cfg.DryRun,
+		Release:     cfg.Release,
+		DryRun:      cfg.DryRun,
+		KeepHistory: cfg.KeepHistory,
 	})
 
 	return steps

internal/helm/plan_test.go

@@ -198,6 +198,7 @@ func (suite *PlanTestSuite) TestUninstall() {
 		DryRun:         true,
 		Timeout:        "think about what you did",
 		Release:        "jetta_id_love_to_change_the_world",
+		KeepHistory:    true,
 	}
 
 	steps := uninstall(cfg)
@@ -220,8 +221,9 @@ func (suite *PlanTestSuite) TestUninstall() {
 	suite.Require().IsType(&run.Uninstall{}, steps[1])
 	actual, _ := steps[1].(*run.Uninstall)
 	expected = &run.Uninstall{
-		Release: "jetta_id_love_to_change_the_world",
-		DryRun:  true,
+		Release:     "jetta_id_love_to_change_the_world",
+		DryRun:      true,
+		KeepHistory: true,
 	}
 	suite.Equal(expected, actual)
 }