Add test for Kubernetes transformer unsupported keys

pkg/transformer/kubernetes/kubernetes_test.go

@@ -18,6 +18,8 @@ package kubernetes
 
 import (
 	"fmt"
+	"reflect"
+	"strings"
 	"testing"
 
 	deployapi "github.com/openshift/origin/pkg/deploy/api"
@@ -319,3 +321,36 @@ func TestKomposeConvert(t *testing.T) {
 		}
 	}
 }
+
+// TestUnsupportedKeys test checkUnsupportedKey function
+func TestUnsupportedKeys(t *testing.T) {
+
+	kobjectWithBuild := newKomposeObject()
+	kobjectWithBuild.LoadedFrom = "compose"
+	serviceConfig := kobjectWithBuild.ServiceConfigs["app"]
+	serviceConfig.Build = "./asdf"
+	serviceConfig.Network = []string{}
+	kobjectWithBuild.ServiceConfigs = map[string]kobject.ServiceConfig{"app": serviceConfig}
+
+	// define all test cases for checkUnsupportedKey function
+	testCases := map[string]struct {
+		bundleFile              kobject.KomposeObject
+		expectedUnsupportedKeys []string
+	}{
+		"Full Bundle": {
+			kobjectWithBuild,
+			[]string{"build"},
+		},
+	}
+
+	k := Kubernetes{}
+
+	for name, test := range testCases {
+		t.Log("Test case:", name)
+		keys := k.CheckUnsupportedKey(&test.bundleFile, unsupportedKey)
+		if !reflect.DeepEqual(keys, test.expectedUnsupportedKeys) {
+			t.Errorf("ERROR: Expecting unsupported keys: ['%s']. Got: ['%s']", strings.Join(test.expectedUnsupportedKeys, "', '"), strings.Join(keys, "', '"))
+		}
+	}
+
+}