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context_test.go
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context_test.go
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package templateresolution
import (
"testing"
wfv1 "github.com/argoproj/argo/pkg/apis/workflow/v1alpha1"
wfclientset "github.com/argoproj/argo/pkg/client/clientset/versioned"
fakewfclientset "github.com/argoproj/argo/pkg/client/clientset/versioned/fake"
"github.com/ghodss/yaml"
"github.com/stretchr/testify/assert"
apierr "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
func createWorkflowTemplate(wfClientset wfclientset.Interface, yamlStr string) error {
wftmpl := unmarshalWftmpl(yamlStr)
_, err := wfClientset.ArgoprojV1alpha1().WorkflowTemplates(metav1.NamespaceDefault).Create(wftmpl)
if err != nil && apierr.IsAlreadyExists(err) {
return nil
}
return err
}
func unmarshalWftmpl(yamlStr string) *wfv1.WorkflowTemplate {
var wftmpl wfv1.WorkflowTemplate
err := yaml.Unmarshal([]byte(yamlStr), &wftmpl)
if err != nil {
panic(err)
}
return &wftmpl
}
var someWorkflowTemplateYaml = `
apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
name: some-workflow-template
spec:
templates:
- name: local-whalesay
template: whalesay
- name: another-whalesay
templateRef:
name: another-workflow-template
template: whalesay
- name: whalesay
container:
image: docker/whalesay
- name: nested-whalesay-with-arguments
template: whalesay-with-arguments
inputs:
parameters:
- name: message
arguments:
parameters:
- name: message
value: "{{inputs.parameters.message}}-bar"
- name: whalesay-with-arguments
template: whalesay-with-arguments-inner
inputs:
parameters:
- name: message
arguments:
parameters:
- name: message
value: "{{inputs.parameters.message}}-foo"
- name: whalesay-with-arguments-inner
inputs:
parameters:
- name: message
container:
image: docker/whalesay
command: [cowsay]
args: ["{{inputs.parameters.message}}"]
- name: infinite-local-loop-whalesay
template: infinite-local-loop-whalesay
- name: infinite-loop-whalesay
templateRef:
name: some-workflow-template
template: infinite-loop-whalesay
`
var anotherWorkflowTemplateYaml = `
apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
name: another-workflow-template
spec:
templates:
- name: whalesay
container:
image: docker/whalesay
`
var baseWorkflowTemplateYaml = `
apiVersion: argoproj.io/v1alpha1
kind: WorkflowTemplate
metadata:
name: base-workflow-template
spec:
templates:
- name: whalesay
container:
image: docker/whalesay
`
func TestGetTemplateByName(t *testing.T) {
wfClientset := fakewfclientset.NewSimpleClientset()
wftmpl := unmarshalWftmpl(baseWorkflowTemplateYaml)
ctx := NewContextFromClientset(wfClientset.ArgoprojV1alpha1().WorkflowTemplates(metav1.NamespaceDefault), wftmpl)
tmpl, err := ctx.GetTemplateByName("whalesay")
if !assert.NoError(t, err) {
t.Fatal(err)
}
assert.Equal(t, "whalesay", tmpl.Name)
assert.NotNil(t, tmpl.Container)
_, err = ctx.GetTemplateByName("unknown")
assert.EqualError(t, err, "template unknown not found")
}
func TestGetTemplateFromRef(t *testing.T) {
wfClientset := fakewfclientset.NewSimpleClientset()
err := createWorkflowTemplate(wfClientset, anotherWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
err = createWorkflowTemplate(wfClientset, someWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
wftmpl := unmarshalWftmpl(baseWorkflowTemplateYaml)
ctx := NewContextFromClientset(wfClientset.ArgoprojV1alpha1().WorkflowTemplates(metav1.NamespaceDefault), wftmpl)
// Get the template of existing template reference.
tmplRef := wfv1.TemplateRef{Name: "some-workflow-template", Template: "whalesay"}
tmpl, err := ctx.GetTemplateFromRef(&tmplRef)
if !assert.NoError(t, err) {
t.Fatal(err)
}
assert.Equal(t, "whalesay", tmpl.Name)
assert.NotNil(t, tmpl.Container)
// Get the template of unexisting template reference.
tmplRef = wfv1.TemplateRef{Name: "unknown-workflow-template", Template: "whalesay"}
_, err = ctx.GetTemplateFromRef(&tmplRef)
assert.EqualError(t, err, "workflow template unknown-workflow-template not found")
// Get the template of unexisting template name of existing template reference.
tmplRef = wfv1.TemplateRef{Name: "some-workflow-template", Template: "unknown"}
_, err = ctx.GetTemplateFromRef(&tmplRef)
assert.EqualError(t, err, "template unknown not found in workflow template some-workflow-template")
}
func TestGetTemplate(t *testing.T) {
wfClientset := fakewfclientset.NewSimpleClientset()
err := createWorkflowTemplate(wfClientset, anotherWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
err = createWorkflowTemplate(wfClientset, someWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
wftmpl := unmarshalWftmpl(baseWorkflowTemplateYaml)
ctx := NewContextFromClientset(wfClientset.ArgoprojV1alpha1().WorkflowTemplates(metav1.NamespaceDefault), wftmpl)
// Get the template of existing template name.
tmplHolder := wfv1.Template{Template: "whalesay"}
tmpl, err := ctx.GetTemplate(&tmplHolder)
if !assert.NoError(t, err) {
t.Fatal(err)
}
assert.Equal(t, "whalesay", tmpl.Name)
assert.NotNil(t, tmpl.Container)
// Get a non-concrete template.
tmplHolder = wfv1.Template{}
_, err = ctx.GetTemplate(&tmplHolder)
assert.EqualError(t, err, "template is not a concrete template")
// Get the template of unexisting template name.
tmplHolder = wfv1.Template{Template: "unexisting"}
_, err = ctx.GetTemplate(&tmplHolder)
assert.EqualError(t, err, "template unexisting not found")
// Get the template of existing template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "whalesay"}}
tmpl, err = ctx.GetTemplate(&tmplHolder)
if !assert.NoError(t, err) {
t.Fatal(err)
}
assert.Equal(t, "whalesay", tmpl.Name)
assert.NotNil(t, tmpl.Container)
// Get the template of unexisting template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "unknown-workflow-template", Template: "whalesay"}}
_, err = ctx.GetTemplate(&tmplHolder)
assert.EqualError(t, err, "workflow template unknown-workflow-template not found")
}
func TestGetTemplateBase(t *testing.T) {
wfClientset := fakewfclientset.NewSimpleClientset()
err := createWorkflowTemplate(wfClientset, anotherWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
err = createWorkflowTemplate(wfClientset, someWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
wftmpl := unmarshalWftmpl(baseWorkflowTemplateYaml)
ctx := NewContextFromClientset(wfClientset.ArgoprojV1alpha1().WorkflowTemplates(metav1.NamespaceDefault), wftmpl)
// Get the template base of existing template name.
tmplHolder := wfv1.Template{Template: "whalesay"}
tmplBase, err := ctx.GetTemplateBase(&tmplHolder)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok := tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "base-workflow-template", wftmpl.Name)
// Get the template base of unexisting template name.
tmplHolder = wfv1.Template{Template: "unknown"}
tmplBase, err = ctx.GetTemplateBase(&tmplHolder)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok = tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "base-workflow-template", wftmpl.Name)
// Get the template base of existing template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "whalesay"}}
tmplBase, err = ctx.GetTemplateBase(&tmplHolder)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok = tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "some-workflow-template", wftmpl.Name)
// Get the template base of unexisting template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "unknown-workflow-template", Template: "whalesay"}}
_, err = ctx.GetTemplateBase(&tmplHolder)
assert.EqualError(t, err, "workflow template unknown-workflow-template not found")
}
func TestResolveTemplate(t *testing.T) {
emptymap := map[string]string{}
wfClientset := fakewfclientset.NewSimpleClientset()
err := createWorkflowTemplate(wfClientset, anotherWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
err = createWorkflowTemplate(wfClientset, someWorkflowTemplateYaml)
if err != nil {
t.Fatal(err)
}
wftmpl := unmarshalWftmpl(baseWorkflowTemplateYaml)
ctx := NewContextFromClientset(wfClientset.ArgoprojV1alpha1().WorkflowTemplates(metav1.NamespaceDefault), wftmpl)
// Get the template of template name.
tmplHolder := wfv1.Template{Template: "whalesay"}
ctx, tmpl, err := ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{}, emptymap, emptymap, false)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok := ctx.tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "base-workflow-template", wftmpl.Name)
assert.Equal(t, "whalesay", tmpl.Name)
// Get the template of template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "whalesay"}}
ctx, tmpl, err = ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{}, emptymap, emptymap, false)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok = ctx.tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "some-workflow-template", wftmpl.Name)
assert.Equal(t, "whalesay", tmpl.Name)
assert.NotNil(t, tmpl.Container)
// Get the template of local nested template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "local-whalesay"}}
ctx, tmpl, err = ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{}, emptymap, emptymap, false)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok = ctx.tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "some-workflow-template", wftmpl.Name)
assert.Equal(t, "local-whalesay", tmpl.Name)
assert.NotNil(t, tmpl.Container)
// Get the template of nested template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "another-whalesay"}}
ctx, tmpl, err = ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{}, emptymap, emptymap, false)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok = ctx.tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "another-workflow-template", wftmpl.Name)
assert.Equal(t, "another-whalesay", tmpl.Name)
assert.NotNil(t, tmpl.Container)
// Get the template of template reference with arguments.
tmplHolder = wfv1.Template{
TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "whalesay-with-arguments"},
}
msgValue := "from-args"
ctx, tmpl, err = ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{Parameters: []wfv1.Parameter{{Name: "message", Value: &msgValue}}}, emptymap, emptymap, false)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok = ctx.tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "some-workflow-template", wftmpl.Name)
assert.Equal(t, "whalesay-with-arguments", tmpl.Name)
assert.Equal(t, "from-args-foo", *tmpl.Inputs.Parameters[0].Value)
assert.Equal(t, []string{"{{inputs.parameters.message}}"}, tmpl.Container.Args)
// Get the template of nested template reference with arguments.
tmplHolder = wfv1.Template{
TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "nested-whalesay-with-arguments"},
}
ctx, tmpl, err = ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{Parameters: []wfv1.Parameter{{Name: "message", Value: &msgValue}}}, emptymap, emptymap, false)
if !assert.NoError(t, err) {
t.Fatal(err)
}
wftmpl, ok = ctx.tmplBase.(*wfv1.WorkflowTemplate)
if !assert.True(t, ok) {
t.Fatal(err)
}
assert.Equal(t, "some-workflow-template", wftmpl.Name)
assert.Equal(t, "nested-whalesay-with-arguments", tmpl.Name)
assert.Equal(t, "from-args-bar-foo", *tmpl.Inputs.Parameters[0].Value)
assert.Equal(t, []string{"{{inputs.parameters.message}}"}, tmpl.Container.Args)
// Get the template of infinite loop template reference.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "infinite-loop-whalesay"}}
_, _, err = ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{}, emptymap, emptymap, false)
assert.EqualError(t, err, "template reference exceeded max depth (10)")
// Get the template of local infinite loop template.
tmplHolder = wfv1.Template{TemplateRef: &wfv1.TemplateRef{Name: "some-workflow-template", Template: "infinite-local-loop-whalesay"}}
_, _, err = ctx.ResolveTemplate(&tmplHolder, &wfv1.Arguments{}, emptymap, emptymap, false)
assert.EqualError(t, err, "template reference exceeded max depth (10)")
}