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package main
import (
"bytes"
"html/template"
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/net/html"
)
// TempFile persists contents and returns the path and a clean func
func TempFile(t *testing.T, contents string) (path string) {
content := []byte(contents)
tmpfile, err := os.CreateTemp("", "sally-tmp")
require.NoError(t, err, "unable to create tmpfile")
_, err = tmpfile.Write(content)
require.NoError(t, err, "unable to write tmpfile")
err = tmpfile.Close()
require.NoError(t, err, "unable to close tmpfile")
t.Cleanup(func() {
_ = os.Remove(tmpfile.Name())
})
return tmpfile.Name()
}
// CreateHandlerFromYAML builds the Sally handler from a yaml config string
func CreateHandlerFromYAML(t *testing.T, templates *template.Template, content string) (handler http.Handler) {
path := TempFile(t, content)
config, err := Parse(path)
require.NoError(t, err, "unable to parse path %s", path)
handler, err = CreateHandler(config, templates)
require.NoError(t, err)
return handler
}
// CallAndRecord makes a GET request to the Sally handler and returns a response recorder
func CallAndRecord(t *testing.T, config string, templates *template.Template, uri string) *httptest.ResponseRecorder {
handler := CreateHandlerFromYAML(t, templates, config)
req, err := http.NewRequest("GET", uri, nil)
require.NoError(t, err, "unable to create request to %s", uri)
rr := httptest.NewRecorder()
handler.ServeHTTP(rr, req)
return rr
}
// AssertResponse normalizes and asserts the body from rr against want
func AssertResponse(t *testing.T, rr *httptest.ResponseRecorder, code int, want string) {
assert.Equal(t, rr.Code, code)
assert.Equal(t, reformatHTML(t, want), reformatHTML(t, rr.Body.String()))
}
// getTestTemplates returns a [template.Template] object with the default templates,
// overwritten by the [overrideTemplates]. If [overrideTemplates] is nil, the returned
// templates are a clone of the global [_templates].
func getTestTemplates(tb testing.TB, overrideTemplates map[string]string) *template.Template {
if len(overrideTemplates) == 0 {
// We must clone! Cloning can only be done before templates are executed. Therefore,
// we cannot run some tests without cloning, and then attempt cloning it. It'll panic.
templates, err := _templates.Clone()
require.NoError(tb, err)
return templates
}
templatesDir := tb.TempDir() // This is automatically removed at the end of the test.
for name, content := range overrideTemplates {
err := os.WriteFile(filepath.Join(templatesDir, name), []byte(content), 0o666)
require.NoError(tb, err)
}
templates, err := getCombinedTemplates(templatesDir)
require.NoError(tb, err)
return templates
}
func reformatHTML(t *testing.T, s string) string {
n, err := html.Parse(strings.NewReader(s))
require.NoError(t, err)
var buff bytes.Buffer
require.NoError(t, html.Render(&buff, n))
return buff.String()
}
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