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html_test.go
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package html
import (
"bytes"
"io/ioutil"
"net/http"
"regexp"
"strings"
"testing"
)
func trim(str string) string {
trimmed := strings.TrimSpace(regexp.MustCompile(`\s+`).ReplaceAllString(str, " "))
trimmed = strings.Replace(trimmed, " <", "<", -1)
trimmed = strings.Replace(trimmed, "> ", ">", -1)
return trimmed
}
func Test_Render(t *testing.T) {
engine := New("./views", ".html")
engine.AddFunc("isAdmin", func(user string) bool {
return user == "admin"
})
if err := engine.Load(); err != nil {
t.Fatalf("load: %v\n", err)
}
// Partials
var buf bytes.Buffer
engine.Render(&buf, "index", map[string]interface{}{
"Title": "Hello, World!",
})
expect := `<h2>Header</h2><h1>Hello, World!</h1><h2>Footer</h2>`
result := trim(buf.String())
if expect != result {
t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
}
// Single
buf.Reset()
engine.Render(&buf, "errors/404", map[string]interface{}{
"Error": "404 Not Found!",
})
expect = `<h1>404 Not Found!</h1>`
result = trim(buf.String())
if expect != result {
t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
}
}
func Test_AddFunc(t *testing.T) {
engine := New("./views", ".html")
engine.AddFunc("isAdmin", func(user string) bool {
return user == "admin"
})
if err := engine.Load(); err != nil {
t.Fatalf("load: %v\n", err)
}
// Func is admin
var buf bytes.Buffer
engine.Render(&buf, "admin", map[string]interface{}{
"User": "admin",
})
expect := `<h1>Hello, Admin!</h1>`
result := trim(buf.String())
if expect != result {
t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
}
// Func is not admin
buf.Reset()
engine.Render(&buf, "admin", map[string]interface{}{
"User": "john",
})
expect = `<h1>Access denied!</h1>`
result = trim(buf.String())
if expect != result {
t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
}
}
func Test_Layout(t *testing.T) {
engine := New("./views", ".html")
engine.AddFunc("isAdmin", func(user string) bool {
return user == "admin"
})
if err := engine.Load(); err != nil {
t.Fatalf("load: %v\n", err)
}
var buf bytes.Buffer
engine.Render(&buf, "index", map[string]interface{}{
"Title": "Hello, World!",
}, "layouts/main")
expect := `<!DOCTYPE html><html><head><title>Main</title></head><body><h2>Header</h2><h1>Hello, World!</h1><h2>Footer</h2></body></html>`
result := trim(buf.String())
if expect != result {
t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
}
}
//Test_Layout_Multi checks if the layout can be rendered multiple times
func Test_Layout_Multi(t *testing.T) {
engine := New("./views", ".html")
engine.AddFunc("isAdmin", func(user string) bool {
return user == "admin"
})
if err := engine.Load(); err != nil {
t.Fatalf("load: %v\n", err)
}
for i := 0; i < 2; i++ {
var buf bytes.Buffer
err := engine.Render(&buf, "index", map[string]interface{}{
"Title": "Hello, World!",
}, "layouts/main")
expect := `<!DOCTYPE html><html><head><title>Main</title></head><body><h2>Header</h2><h1>Hello, World!</h1><h2>Footer</h2></body></html>`
result := trim(buf.String())
if expect != result {
t.Fatalf("\nExpected:\n%s\nResult:\n%s\n\nError: %s", expect, result, err)
}
}
}
func Test_FileSystem(t *testing.T) {
engine := NewFileSystem(http.Dir("./views"), ".html")
engine.AddFunc("isAdmin", func(user string) bool {
return user == "admin"
})
if err := engine.Load(); err != nil {
t.Fatalf("load: %v\n", err)
}
var buf bytes.Buffer
engine.Render(&buf, "index", map[string]interface{}{
"Title": "Hello, World!",
}, "layouts/main")
expect := `<!DOCTYPE html><html><head><title>Main</title></head><body><h2>Header</h2><h1>Hello, World!</h1><h2>Footer</h2></body></html>`
result := trim(buf.String())
if expect != result {
t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
}
}
func Test_Reload(t *testing.T) {
engine := NewFileSystem(http.Dir("./views"), ".html")
engine.Reload(true) // Optional. Default: false
engine.AddFunc("isAdmin", func(user string) bool {
return user == "admin"
})
if err := engine.Load(); err != nil {
t.Fatalf("load: %v\n", err)
}
if err := ioutil.WriteFile("./views/reload.html", []byte("after reload\n"), 0644); err != nil {
t.Fatalf("write file: %v\n", err)
}
defer func() {
if err := ioutil.WriteFile("./views/reload.html", []byte("before reload\n"), 0644); err != nil {
t.Fatalf("write file: %v\n", err)
}
}()
engine.Load()
var buf bytes.Buffer
engine.Render(&buf, "reload", nil)
expect := "after reload"
result := trim(buf.String())
if expect != result {
t.Fatalf("Expected:\n%s\nResult:\n%s\n", expect, result)
}
}