traefik/provider/provider_test.go

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package provider
import (
"io/ioutil"
"os"
"strings"
"testing"
"text/template"
)
type myProvider struct {
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BaseProvider
}
func (p *myProvider) Foo() string {
return "bar"
}
func TestConfigurationErrors(t *testing.T) {
templateErrorFile, err := ioutil.TempFile("", "provider-configuration-error")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(templateErrorFile.Name())
data := []byte("Not a valid template {{ Bar }}")
err = ioutil.WriteFile(templateErrorFile.Name(), data, 0700)
if err != nil {
t.Fatal(err)
}
templateInvalidTOMLFile, err := ioutil.TempFile("", "provider-configuration-error")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(templateInvalidTOMLFile.Name())
data = []byte(`Hello {{ .Name }}
{{ Foo }}`)
err = ioutil.WriteFile(templateInvalidTOMLFile.Name(), data, 0700)
if err != nil {
t.Fatal(err)
}
invalids := []struct {
provider *myProvider
defaultTemplate string
expectedError string
funcMap template.FuncMap
templateObjects interface{}
}{
{
provider: &myProvider{
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BaseProvider{
Filename: "/non/existent/template.tmpl",
},
},
expectedError: "open /non/existent/template.tmpl: no such file or directory",
},
{
provider: &myProvider{},
defaultTemplate: "non/existent/template.tmpl",
expectedError: "Asset non/existent/template.tmpl not found",
},
{
provider: &myProvider{
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BaseProvider{
Filename: templateErrorFile.Name(),
},
},
expectedError: `function "Bar" not defined`,
},
{
provider: &myProvider{
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BaseProvider{
Filename: templateInvalidTOMLFile.Name(),
},
},
expectedError: "Near line 1, key 'Hello': Near line 1: Expected key separator '=', but got '<' instead",
funcMap: template.FuncMap{
"Foo": func() string {
return "bar"
},
},
templateObjects: struct{ Name string }{Name: "bar"},
},
}
for _, invalid := range invalids {
configuration, err := invalid.provider.getConfiguration(invalid.defaultTemplate, invalid.funcMap, nil)
if err == nil || !strings.Contains(err.Error(), invalid.expectedError) {
t.Fatalf("should have generate an error with %q, got %v", invalid.expectedError, err)
}
if configuration != nil {
t.Fatalf("shouldn't have return a configuration object : %v", configuration)
}
}
}
func TestGetConfiguration(t *testing.T) {
templateFile, err := ioutil.TempFile("", "provider-configuration")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(templateFile.Name())
data := []byte(`[backends]
[backends.backend1]
[backends.backend1.circuitbreaker]
expression = "NetworkErrorRatio() > 0.5"
[backends.backend1.servers.server1]
url = "http://172.17.0.2:80"
weight = 10
[backends.backend1.servers.server2]
url = "http://172.17.0.3:80"
weight = 1
[frontends]
[frontends.frontend1]
backend = "backend1"
passHostHeader = true
[frontends.frontend11.routes.test_2]
rule = "Path"
value = "/test"`)
err = ioutil.WriteFile(templateFile.Name(), data, 0700)
if err != nil {
t.Fatal(err)
}
provider := &myProvider{
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BaseProvider{
Filename: templateFile.Name(),
},
}
configuration, err := provider.getConfiguration(templateFile.Name(), nil, nil)
if err != nil {
t.Fatalf("Shouldn't have error out, got %v", err)
}
if configuration == nil {
t.Fatalf("Configuration should not be nil, but was")
}
}
func TestReplace(t *testing.T) {
cases := []struct {
str string
expected string
}{
{
str: "",
expected: "",
},
{
str: "foo",
expected: "bar",
},
{
str: "foo foo",
expected: "bar bar",
},
{
str: "somethingfoo",
expected: "somethingbar",
},
}
for _, c := range cases {
actual := replace("foo", "bar", c.str)
if actual != c.expected {
t.Fatalf("expected %q, got %q, for %q", c.expected, actual, c.str)
}
}
}