test/components: use NewConfig() instead of components.Get()

So no globals or HCL parsing is involved in testing. Also
components.Get() is now deprecated, as we want to avoid relying on
globals and init() functions.

Part of #992

Signed-off-by: Mateusz Gozdek <mateusz@kinvolk.io>

test/components/component_delete_multiple_release_test.go

@@ -20,19 +20,13 @@ package components_test
 import (
 	"testing"
 
-	"github.com/kinvolk/lokomotive/pkg/components"
 	"github.com/kinvolk/lokomotive/pkg/components/util"
-	_ "github.com/kinvolk/lokomotive/pkg/components/web-ui"
+	webui "github.com/kinvolk/lokomotive/pkg/components/web-ui"
 	testutil "github.com/kinvolk/lokomotive/test/components/util"
 )
 
 func TestDeleteNamespaceMultipleRelease(t *testing.T) {
-	n := "web-ui"
-
-	c, err := components.Get(n)
-	if err != nil {
-		t.Fatalf("failed getting component: %v", err)
-	}
+	c := webui.NewConfig()
 
 	k := testutil.Kubeconfig(t)
 

test/components/install_test.go

@@ -20,35 +20,13 @@ package components
 import (
 	"testing"
 
-	"github.com/hashicorp/hcl/v2"
-
-	"github.com/kinvolk/lokomotive/pkg/components"
-	_ "github.com/kinvolk/lokomotive/pkg/components/flatcar-linux-update-operator"
+	fluo "github.com/kinvolk/lokomotive/pkg/components/flatcar-linux-update-operator"
 	"github.com/kinvolk/lokomotive/pkg/components/util"
 	testutil "github.com/kinvolk/lokomotive/test/components/util"
 )
 
 func TestInstallIdempotent(t *testing.T) {
-	configHCL := `
-component "flatcar-linux-update-operator" {}
-  `
-
-	n := "flatcar-linux-update-operator"
-
-	c, err := components.Get(n)
-	if err != nil {
-		t.Fatalf("failed getting component: %v", err)
-	}
-
-	body, diagnostics := util.GetComponentBody(configHCL, n)
-	if diagnostics != nil {
-		t.Fatalf("Error getting component body: %v", diagnostics)
-	}
-
-	diagnostics = c.LoadConfig(body, &hcl.EvalContext{})
-	if diagnostics.HasErrors() {
-		t.Fatalf("Valid config should not return error, got: %s", diagnostics)
-	}
+	c := fluo.NewConfig()
 
 	k := testutil.Kubeconfig(t)