Added gotest templates, changed unit test naming (#1621)

* Added gotest templates, changed unit test naming
Signed-off-by: dereknola <derek.nola@suse.com>

contrib/gotests_templates/call.tmpl

+{{define "call"}}{{with .Receiver}}{{if not .IsStruct}}tt.{{end}}{{Receiver .}}.{{end}}{{.Name}}({{range $i, $el := .Parameters}}{{if $i}}, {{end}}{{if not .IsWriter}}tt.args.{{end}}{{Param .}}{{if .Type.IsVariadic}}...{{end}}{{end}}){{end}}

contrib/gotests_templates/function.tmpl

+{{define "function"}}
+{{- $f := .}}
+
+func Test_Unit{{.FullName}}(t *testing.T) {
+	{{- with .Receiver}}
+		{{- if .IsStruct}}
+			{{- if .Fields}}
+				type fields struct {
+				{{- range .Fields}}
+					{{Field .}} {{.Type}}
+				{{- end}}
+				}
+			{{- end}}
+		{{- end}}
+	{{- end}}
+	{{- if .TestParameters}}
+	type args struct {
+		{{- range .TestParameters}}
+				{{Param .}} {{.Type}}
+		{{- end}}
+	}
+	{{- end}}
+	tests := []struct {
+		name string
+		{{- with .Receiver}}
+			{{- if and .IsStruct .Fields}}
+				fields fields
+			{{- else}}
+				{{Receiver .}} {{.Type}}
+			{{- end}}
+		{{- end}}
+		{{- if .TestParameters}}
+			args args
+		{{- end}}
+		setup    func() error // Optional, delete if unused
+		teardown func() error // Optional, delete if unused
+		{{- range .TestResults}}
+			{{Want .}} {{.Type}}
+		{{- end}}
+		{{- if .ReturnsError}}
+			wantErr bool
+		{{- end}}
+	}{
+		// TODO: Add test cases.
+		// {
+		//      name: "Example Test",
+		//      args: args {
+		//      },
+		// {{- range .TestResults}}
+		//      want: {{Want .}} {{.Type}}
+                // {{- end}}
+		//      setup: func() error { return nil },
+		//      teardown: func() error { return nil },
+		// },
+	}
+	for {{if (or .Subtests (not .IsNaked))}} _, tt := {{end}} range tests {
+		{{- if .Subtests}}
+		{{- if .Parallel}}tt := tt{{end}}
+		t.Run(tt.name, func(t *testing.T) {
+			{{- if .Parallel}}t.Parallel(){{end}}
+		{{- end}}
+			{{- with .Receiver}}
+				{{- if .IsStruct}}
+					{{Receiver .}} := {{if .Type.IsStar}}&{{end}}{{.Type.Value}}{
+					{{- range .Fields}}
+						{{.Name}}: tt.fields.{{Field .}},
+					{{- end}}
+					}
+				{{- end}}
+			{{- end}}
+			{{- range .Parameters}}
+				{{- if .IsWriter}}
+					{{Param .}} := &bytes.Buffer{}
+				{{- end}}
+			{{- end}}
+			defer tt.teardown()
+			if err := tt.setup(); err != nil {
+			        t.Errorf("Setup for {{template "message" $f}} failed = %v", err)
+			        return
+			}
+			{{- if and (not .OnlyReturnsError) (not .OnlyReturnsOneValue) }}
+				{{template "results" $f}} {{template "call" $f}}
+			{{- end}}
+			{{- if .ReturnsError}}
+				if {{if .OnlyReturnsError}} err := {{template "call" $f}}; {{end}} (err != nil) != tt.wantErr {
+					t.Errorf("{{template "message" $f}} error = %v, wantErr %v", {{template "inputs" $f}} err, tt.wantErr)
+					{{- if .TestResults}}
+						{{if .Subtests }}return{{else}}continue{{end}}
+					{{- end}}
+				}
+			{{- end}}
+			{{- range .TestResults}}
+				{{- if .IsWriter}}
+					if {{Got .}} := {{Param .}}.String(); {{Got .}} != tt.{{Want .}} {
+				{{- else if .IsBasicType}}
+					if {{if $f.OnlyReturnsOneValue}}{{Got .}} := {{template "inline" $f}}; {{end}} {{Got .}} != tt.{{Want .}} {
+				{{- else}}
+					if {{if $f.OnlyReturnsOneValue}}{{Got .}} := {{template "inline" $f}}; {{end}} !reflect.DeepEqual({{Got .}}, tt.{{Want .}}) {
+				{{- end}}
+				t.Errorf("{{template "message" $f}} {{if $f.ReturnsMultiple}}{{Got .}} {{end}}= %+v\nWant = %+v", {{template "inputs" $f}} {{Got .}}, tt.{{Want .}})
+				}
+			{{- end}}
+		{{- if .Subtests }} }) {{- end -}}
+	}
+}
+
+{{end}}

contrib/gotests_templates/header.tmpl

+{{define "header"}}
+{{range .Comments}}{{.}}
+{{end -}}
+package {{.Package}}
+
+import (
+{{range .Imports}}{{.Name}} {{.Path}}
+{{end}}
+)
+{{end}}

contrib/gotests_templates/inline.tmpl

+{{define "inline"}} {{template "call" .}} {{end}}

contrib/gotests_templates/inputs.tmpl

+{{define "inputs"}}{{$f := .}}{{if not .Subtests}}tt.name, {{end}}{{if $f.PrintInputs}}{{range $f.Parameters}}tt.args.{{Param .}}, {{end}}{{end}}{{end}}

contrib/gotests_templates/message.tmpl

+{{define "message" -}}
+{{if not .Subtests}}%q. {{end}}{{with .Receiver}}{{.Type.Value}}.{{end}}{{.Name}}({{if .PrintInputs}}{{range $i, $el := .Parameters}}{{if $i}}, {{end}}%v{{end}}{{end}})
+{{- end}}

contrib/gotests_templates/results.tmpl

+{{define "results"}} {{range $i, $el := .Results}}{{if $i}}, {{end}}{{Got .}}{{end}}{{if .ReturnsError}}, err{{end}} {{if or .Results .ReturnsError}} := {{end}} {{end}}

pkg/images/images_test.go

+package images
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+
+	"github.com/google/go-containerregistry/pkg/name"
+)
+
+func Test_UnitPull(t *testing.T) {
+	type args struct {
+		dir   string
+		name  string
+		image name.Reference
+	}
+	tests := []struct {
+		name        string
+		args        args
+		setup       func(a *args) error
+		teardown    func(a *args) error
+		wantTxtFile bool
+		wantErr     bool
+	}{
+		{
+			name: "Pull with no directory",
+			args: args{
+				name: KubeScheduler,
+			},
+			setup:    func(a *args) error { return nil },
+			teardown: func(a *args) error { return nil },
+		},
+		{
+			name: "Pull with nonexistent directory",
+			args: args{
+				dir:  "/tmp/DEADBEEF",
+				name: KubeScheduler,
+			},
+			setup: func(a *args) error {
+				var err error
+				a.image, err = getDefaultImage(KubeScheduler)
+				return err
+			},
+			teardown: func(a *args) error {
+				return os.RemoveAll(a.dir)
+			},
+
+			wantTxtFile: true,
+		},
+		{
+			name: "Pull with no image in directory",
+			args: args{
+				name: KubeScheduler,
+			},
+			setup: func(a *args) error {
+				var err error
+				a.image, err = getDefaultImage(KubeScheduler)
+				if err != nil {
+					return err
+				}
+				a.dir, err = os.MkdirTemp("", "*")
+				return err
+			},
+			teardown: func(a *args) error {
+				return os.RemoveAll(a.dir)
+			},
+
+			wantTxtFile: true,
+		},
+		{
+			name: "Pull with fake image in directory",
+			args: args{
+				name: "kube-scheduler",
+			},
+			setup: func(a *args) error {
+				var err error
+				a.image, err = getDefaultImage(KubeScheduler)
+				if err != nil {
+					return err
+				}
+				a.dir, err = os.MkdirTemp("", "*")
+				tempImage := a.dir + "/" + a.name + ".image"
+				ioutil.WriteFile(tempImage, []byte(a.image.Name()+"\n"), 0644)
+				return err
+			},
+			teardown: func(a *args) error {
+				return os.RemoveAll(a.dir)
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+
+			if err := tt.setup(&tt.args); err != nil {
+				t.Errorf("Setup for Pull() failed = %v", err)
+			}
+			if err := Pull(tt.args.dir, tt.args.name, tt.args.image); (err != nil) != tt.wantErr {
+				t.Errorf("Pull() error = %v, wantErr %v", err, tt.wantErr)
+			}
+			if tt.wantTxtFile {
+				fileName := tt.args.name + ".txt"
+				if _, err := os.Stat(tt.args.dir + "/" + fileName); os.IsNotExist(err) {
+					t.Errorf("File generate by Pull() %s, does not exists, wantFile %v", fileName, tt.wantTxtFile)
+				}
+			}
+			if err := tt.teardown(&tt.args); err != nil {
+				t.Errorf("Teardown for Pull() failed = %v", err)
+			}
+		})
+	}
+}

pkg/rke2/psp_test.go

@@ -140,7 +140,7 @@ func fakeWithRetriableError(ro interface{}) *fake.Clientset {
 	return cs
 }
 
-func Test_deployPodSecurityPolicyFromYaml(t *testing.T) {
+func Test_UnitdeployPodSecurityPolicyFromYaml(t *testing.T) {
 	pspYAML := fmt.Sprintf(globalRestrictedPSPTemplate, testPSPName)
 	type args struct {
 		ctx     context.Context
@@ -207,7 +207,7 @@ func Test_deployPodSecurityPolicyFromYaml(t *testing.T) {
 	}
 }
 
-func Test_deployClusterRoleBindingFromYaml(t *testing.T) {
+func Test_UnitdeployClusterRoleBindingFromYaml(t *testing.T) {
 	clusterRoleBindingYaml := fmt.Sprintf(kubeletAPIServerRoleBindingTemplate, testClusterRoleBindingName)
 	type args struct {
 		ctx                    context.Context
@@ -274,7 +274,7 @@ func Test_deployClusterRoleBindingFromYaml(t *testing.T) {
 	}
 }
 
-func Test_deployClusterRoleFromYaml(t *testing.T) {
+func Test_UnitdeployClusterRoleFromYaml(t *testing.T) {
 	const testResourceName = "test-resource-name"
 	clusterRoleYaml := fmt.Sprintf(roleTemplate, "test-cluster-role", testResourceName)
 	type args struct {
@@ -342,7 +342,7 @@ func Test_deployClusterRoleFromYaml(t *testing.T) {
 	}
 }
 
-func Test_deployRoleBindingFromYaml(t *testing.T) {
+func Test_UnitdeployRoleBindingFromYaml(t *testing.T) {
 	roleBindingYaml := fmt.Sprintf(tunnelControllerRoleTemplate, testRoleBindingName)
 	type args struct {
 		ctx             context.Context

pkg/rke2/serviceaccount_test.go

@@ -69,7 +69,7 @@ func addClientReactors(cs *fake.Clientset, verb string, pass bool) *fake.Clients
 	return cs
 }
 
-func Test_restrictServiceAccount(t *testing.T) {
+func Test_UnitrestrictServiceAccount(t *testing.T) {
 	type args struct {
 		ctx       context.Context
 		namespace string