feat(gke): Add unit tests for MachineTypes (#50)

This adds a suite of unit tests for MachineTypes and gets full coverage for stripOutKeyFromDescription. Once this merges I'll likely do some small refactors for error handling for the MachineType methods that are called.

pkg/google/compute/compute.go

@@ -171,10 +171,6 @@ func getMachineFamily(machineType string) string {
 		return ""
 	}
 	split := strings.Split(machineType, "-")
-	if len(split) < 2 {
-		log.Printf("Machine type %s doesn't contain a -", machineType)
-		return ""
-	}
 	return strings.ToLower(split[0])
 }
 

pkg/google/compute/compute_test.go

@@ -10,6 +10,7 @@ import (
 
 	billingv1 "cloud.google.com/go/billing/apiv1"
 	"cloud.google.com/go/billing/apiv1/billingpb"
+	"github.com/stretchr/testify/require"
 	"google.golang.org/api/compute/v1"
 )
 
@@ -47,6 +48,10 @@ func Test_stripOutKeyFromDescription(t *testing.T) {
 			description: "N1 Predefined Instance Core running in Americas",
 			want:        "N1 Predefined Instance Core",
 		},
+		"commitment v1: empty": {
+			description: "Commitment v1:",
+			want:        "",
+		},
 		"commitment v1": {
 			description: "Commitment v1: N2 Predefined Instance Core in Americas",
 			want:        "N2 Predefined Instance Core",
@@ -141,7 +146,7 @@ func Test_GetMachineFamily(t *testing.T) {
 	}
 }
 
-// development tests: Following tests are ment to be run locally and not suited for CI
+// development tests: Following tests are meant to be run locally and not suited for CI
 // If you need this tests for debugging purposes please run `TestGenerateTestFiles` first
 // and then you can run the rest of tests as needed.
 
@@ -245,3 +250,71 @@ func TestListInstances(t *testing.T) {
 		fmt.Printf("%v:%s\n", instance.Instance, instance.Family)
 	}
 }
+
+func TestNewMachineSpec(t *testing.T) {
+	tests := map[string]struct {
+		instance *compute.Instance
+		want     *MachineSpec
+	}{
+		"basic instance": {
+			instance: &compute.Instance{
+				Name:        "test",
+				MachineType: "abc/abc-def",
+				Zone:        "testing/abc-123",
+				Scheduling: &compute.Scheduling{
+					ProvisioningModel: "test",
+				},
+			},
+			want: &MachineSpec{
+				Instance:     "test",
+				Zone:         "abc-123",
+				Region:       "abc",
+				MachineType:  "abc-def",
+				Family:       "abc",
+				SpotInstance: false,
+			},
+		},
+		"machine type with no value": {
+			instance: &compute.Instance{
+				Name:        "test",
+				MachineType: "abc/",
+				Zone:        "testing/abc-123",
+				Scheduling: &compute.Scheduling{
+					ProvisioningModel: "test",
+				},
+			},
+			want: &MachineSpec{
+				Instance:     "test",
+				Zone:         "abc-123",
+				Region:       "abc",
+				MachineType:  "",
+				Family:       "",
+				SpotInstance: false,
+			},
+		},
+		"spot instance": {
+			instance: &compute.Instance{
+				Name:        "test",
+				MachineType: "abc/abc-def",
+				Zone:        "testing/abc-123",
+				Scheduling: &compute.Scheduling{
+					ProvisioningModel: "SPOT",
+				},
+			},
+			want: &MachineSpec{
+				Instance:     "test",
+				Zone:         "abc-123",
+				Region:       "abc",
+				MachineType:  "abc-def",
+				Family:       "abc",
+				SpotInstance: true,
+			},
+		},
+	}
+	for name, test := range tests {
+		t.Run(name, func(t *testing.T) {
+			got := NewMachineSpec(test.instance)
+			require.Equal(t, got, test.want)
+		})
+	}
+}

pkg/google/compute/pricing_map.go

@@ -17,21 +17,21 @@ var (
 	ErrorInRegions     = errors.New("there is an error in the Regions data")
 	RegionNotFound     = errors.New("region wasn't found in pricing map")
 	FamilyTypeNotFound = errors.New("family wasn't found in pricing map for this region")
-	spot               = `(?P<spot>Spot Preemptible )`
-	machineType        = `(?P<machineType>\w{1,3})`
+	spotRegex          = `(?P<spot>Spot Preemptible )`
+	machineTypeRegex   = `(?P<machineType>\w{1,3})`
 	amd                = `(?P<amd> AMD)`
 	n1Suffix           = `(?: Predefined)`
 	resource           = `(?P<resource>Core|Ram)`
-	region             = `\w+(?: \w+){0,2}`
+	regionRegex        = `\w+(?: \w+){0,2}`
 	computeOptimized   = `(?P<optimized> ?Compute optimized)`
 	onDemandString     = fmt.Sprintf(`^%v?(?:%v|%v)%v?%v?(?: Instance)? %v running in %v$`,
-		spot,
-		machineType,
+		spotRegex,
+		machineTypeRegex,
 		computeOptimized,
 		n1Suffix,
 		amd,
 		resource,
-		region)
+		regionRegex)
 	reOnDemand = regexp.MustCompile(onDemandString)
 )