Add spec test

azure/services/availabilitysets/spec.go

@@ -63,7 +63,8 @@ func (s *AvailabilitySetSpec) Parameters(existing interface{}) (interface{}, err
 		return nil, errors.New("unable to find required FaultDomainCount from machine cache")
 	}
 
-	asParams := &compute.AvailabilitySet{
+	asParams := compute.AvailabilitySet{
+		// TODO: should availability sets be given a name?
 		Sku: &compute.Sku{
 			Name: to.StringPtr(string(compute.AvailabilitySetSkuTypesAligned)),
 		},

azure/services/availabilitysets/spec_test.go

@@ -0,0 +1,70 @@
+/*
+Copyright 2021 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 availabilitysets
+
+import (
+	"testing"
+
+	"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2021-04-01/compute"
+	. "github.com/onsi/gomega"
+)
+
+func TestParameters(t *testing.T) {
+	testcases := []struct {
+		name          string
+		spec          *AvailabilitySetSpec
+		existing      interface{}
+		expect        func(g *WithT, result interface{})
+		expectedError string
+	}{
+		{
+			name:     "error when no fault domain count is present",
+			spec:     &fakeSetSpecMissing,
+			existing: nil,
+			expect: func(g *WithT, result interface{}) {
+				g.Expect(result).To(BeNil())
+			},
+			expectedError: "unable to find required FaultDomainCount from machine cache",
+		},
+		{
+			name:     "get parameters when all values are present",
+			spec:     &fakeSetSpec,
+			existing: nil,
+			expect: func(g *WithT, result interface{}) {
+				g.Expect(result).To(BeAssignableToTypeOf(compute.AvailabilitySet{}))
+				g.Expect(result.(compute.AvailabilitySet).PlatformFaultDomainCount).To(Equal(fakeSetSpec.FaultDomainCount))
+			},
+			expectedError: "",
+		},
+	}
+	for _, tc := range testcases {
+		tc := tc
+		t.Run(tc.name, func(t *testing.T) {
+			g := NewWithT(t)
+			t.Parallel()
+
+			result, err := tc.spec.Parameters(tc.existing)
+			if tc.expectedError != "" {
+				g.Expect(err).To(HaveOccurred())
+				g.Expect(err).To(MatchError(tc.expectedError))
+			} else {
+				g.Expect(err).NotTo(HaveOccurred())
+			}
+			tc.expect(g, result)
+		})
+	}
+}