add unit tests for availabilityzones

cloud/services/availabilityzones/availabilityzones_test.go

@@ -0,0 +1,125 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package availabilityzones
+
+import (
+	"context"
+	"net/http"
+	"testing"
+
+	"sigs.k8s.io/cluster-api-provider-azure/cloud/services/availabilityzones/mock_availabilityzones"
+
+	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2019-07-01/compute"
+	"github.com/Azure/go-autorest/autorest"
+	"github.com/golang/mock/gomock"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	infrav1 "sigs.k8s.io/cluster-api-provider-azure/api/v1alpha2"
+	"sigs.k8s.io/cluster-api-provider-azure/cloud/scope"
+	clusterv1 "sigs.k8s.io/cluster-api/api/v1alpha2"
+	"sigs.k8s.io/controller-runtime/pkg/client/fake"
+)
+
+func TestGetAvailabilityZones(t *testing.T) {
+	testcases := []struct {
+		name                 string
+		availabilityZoneSpec Spec
+		expectedError        string
+		expect               func(m *mock_availabilityzones.MockClientMockRecorder)
+	}{
+		{
+			name:                 "empty availability zones",
+			availabilityZoneSpec: Spec{VMSize: "Standard_B2ms"},
+			expectedError:        "",
+			expect: func(m *mock_availabilityzones.MockClientMockRecorder) {
+				m.ListComplete(context.TODO()).Return(compute.ResourceSkusResultIterator{}, nil)
+			},
+		},
+		{
+			name:                 "empty availability zones with error",
+			availabilityZoneSpec: Spec{VMSize: "Standard_B2ms"},
+			expectedError:        "#: Internal Server Error: StatusCode=500",
+			expect: func(m *mock_availabilityzones.MockClientMockRecorder) {
+				m.ListComplete(context.TODO()).Return(compute.ResourceSkusResultIterator{}, autorest.NewErrorWithResponse("", "", &http.Response{StatusCode: 500}, "Internal Server Error"))
+			},
+		},
+		{
+			name:                 "availability zones exist",
+			availabilityZoneSpec: Spec{VMSize: "Standard_B2ms"},
+			expectedError:        "",
+			expect: func(m *mock_availabilityzones.MockClientMockRecorder) {
+				m.ListComplete(context.TODO()).Return(compute.NewResourceSkusResultIterator(compute.ResourceSkusResultPage{}), nil)
+			},
+		},
+	}
+
+	for _, tc := range testcases {
+		t.Run(tc.name, func(t *testing.T) {
+			mockCtrl := gomock.NewController(t)
+			azMock := mock_availabilityzones.NewMockClient(mockCtrl)
+
+			cluster := &clusterv1.Cluster{
+				ObjectMeta: metav1.ObjectMeta{Name: "test-cluster"},
+			}
+
+			client := fake.NewFakeClient(cluster)
+
+			tc.expect(azMock.EXPECT())
+
+			clusterScope, err := scope.NewClusterScope(scope.ClusterScopeParams{
+				AzureClients: scope.AzureClients{
+					SubscriptionID: "123",
+					Authorizer:     autorest.NullAuthorizer{},
+				},
+				Client:  client,
+				Cluster: cluster,
+				AzureCluster: &infrav1.AzureCluster{
+					Spec: infrav1.AzureClusterSpec{
+						Location: "test-location",
+						ResourceGroup: "my-rg",
+						NetworkSpec: infrav1.NetworkSpec{
+							Vnet: infrav1.VnetSpec{Name: "my-vnet", ResourceGroup: "my-rg"},
+							Subnets: []*infrav1.SubnetSpec{{
+								Name: "my-subnet",
+								Role: infrav1.SubnetNode,
+							}},
+						},
+					},
+				},
+			})
+			if err != nil {
+				t.Fatalf("Failed to create test context: %v", err)
+			}
+
+			s := &Service{
+				Scope:  clusterScope,
+				Client: azMock,
+			}
+
+			if _, err := s.Get(context.TODO(), &tc.availabilityZoneSpec); err != nil {
+				if tc.expectedError == "" || err.Error() != tc.expectedError {
+					t.Fatalf("got an unexpected error: %v", err)
+				}
+			} else {
+				if tc.expectedError != "" {
+					t.Fatalf("expected an error: %v", tc.expectedError)
+
+				}
+			}
+		})
+	}
+}