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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package web | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/xml" | ||
| "github.com/PuerkitoBio/goquery" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/xpmatteo/todomvc-golang/todo" | ||
| "html/template" | ||
| "io" | ||
| "net/http" | ||
| "net/http/httptest" | ||
| "strings" | ||
| "testing" | ||
| ) | ||
|
|
||
| func Test_wellFormedHtml(t *testing.T) { | ||
| templ := template.Must(template.ParseFiles("../templates/index.html")) | ||
| list := todo.NewList() | ||
| model := viewModel(list, get("/")) | ||
|
|
||
| buf := renderTemplate(templ, model) | ||
|
|
||
| assertWellFormedHTML(t, buf) | ||
| } | ||
|
|
||
| func Test_todoItemsAreShown(t *testing.T) { | ||
| templ := template.Must(template.ParseFiles("../templates/index.html")) | ||
| list := todo.NewList() | ||
| list.Add("Foo", nil) | ||
| list.Add("Bar", nil) | ||
| model := viewModel(list, get("/")) | ||
|
|
||
| buf := renderTemplate(templ, model) | ||
|
|
||
| assertWellFormedHTML(t, buf) | ||
| document := parseHtml(t, buf) | ||
| assert.Equal(t, 2, document.Find("ul.todo-list li").Length()) | ||
| assert.Equal(t, "Foo", strings.TrimSpace(document.Find("ul.todo-list li:nth-of-type(1)").Text())) | ||
| assert.Equal(t, "Bar", strings.TrimSpace(document.Find("ul.todo-list li:nth-of-type(2)").Text())) | ||
| } | ||
|
|
||
| func Test_completedItemsGetCompletedClass(t *testing.T) { | ||
| templ := template.Must(template.ParseFiles("../templates/index.html")) | ||
| list := todo.NewList() | ||
| list.Add("Foo", nil) | ||
| list.AddCompleted("Bar") | ||
| model := viewModel(list, get("/")) | ||
|
|
||
| buf := renderTemplate(templ, model) | ||
|
|
||
| assertWellFormedHTML(t, buf) | ||
| document := parseHtml(t, buf) | ||
| selection := document.Find("ul.todo-list li.completed") | ||
| assert.Equal(t, 1, selection.Length()) | ||
| assert.Equal(t, "Bar", strings.TrimSpace(selection.Text())) | ||
| } | ||
|
|
||
| func get(target string) *http.Request { | ||
| return httptest.NewRequest(http.MethodGet, target, nil) | ||
| } | ||
|
|
||
| func parseHtml(t *testing.T, buf bytes.Buffer) *goquery.Document { | ||
| document, err := goquery.NewDocumentFromReader(bytes.NewReader(buf.Bytes())) | ||
| if err != nil { | ||
| t.Fatalf("Error rendering template %s", err) | ||
| } | ||
| return document | ||
| } | ||
|
|
||
| func renderTemplate(templ *template.Template, model any) bytes.Buffer { | ||
| var buf bytes.Buffer | ||
| err := templ.Execute(&buf, model) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| return buf | ||
| } | ||
|
|
||
| func assertWellFormedHTML(t *testing.T, buf bytes.Buffer) { | ||
| decoder := xml.NewDecoder(bytes.NewReader(buf.Bytes())) | ||
| decoder.Strict = false | ||
| decoder.AutoClose = xml.HTMLAutoClose | ||
| decoder.Entity = xml.HTMLEntity | ||
|
|
||
| for { | ||
| _, err := decoder.Token() | ||
| switch err { | ||
| case io.EOF: | ||
| return // We're done, it's valid! | ||
| case nil: | ||
| // do nothing | ||
| default: | ||
| t.Fatalf("Error parsing html: %s", err) | ||
| } | ||
| } | ||
| } |