lib/play: implement function to test Go code

The Test and HTTPHandleTest functions accept Request with File and Body
fields.

1 files changed, 65 insertions, 0 deletions

diff --git a/lib/play/http_example_test.go b/lib/play/http_example_test.go
new file mode 100644
index 00000000..6752e175
--- /dev/null
+++ b/lib/play/http_example_test.go
@@ -0,0 +1,65 @@
+// SPDX-FileCopyrightText: 2024 M. Shulhan <ms@kilabit.info>
+//
+// SPDX-License-Identifier: BSD-3-Clause
+
+package play
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"net/http/httptest"
+	"regexp"
+)
+
+func ExampleHTTPHandleTest() {
+	const code = `
+package test
+import "testing"
+func TestSum(t *testing.T) {
+	var total = sum(1, 2, 3)
+	if total != 6 {
+		t.Fatalf("got %d, want 6", total)
+	}
+}`
+	var req = Request{
+		Body: code,
+		File: `testdata/test_test.go`,
+	}
+	var (
+		rawbody []byte
+		err     error
+	)
+	rawbody, err = json.Marshal(&req)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var mux = http.NewServeMux()
+
+	mux.HandleFunc(`POST /api/play/test`, HTTPHandleTest)
+
+	var resprec = httptest.NewRecorder()
+	var httpreq = httptest.NewRequest(`POST`, `/api/play/test`,
+		bytes.NewReader(rawbody))
+	httpreq.Header.Set(`Content-Type`, `application/json`)
+
+	mux.ServeHTTP(resprec, httpreq)
+	var resp = resprec.Result()
+
+	rawbody, err = io.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var rexDuration = regexp.MustCompile(`(?m)\\t(\d+\.\d+)s`)
+	rawbody = rexDuration.ReplaceAll(rawbody, []byte(`\tXs`))
+
+	fmt.Printf(`%s`, rawbody)
+
+	// Output:
+	// {"data":"ok  \tgit.sr.ht/~shulhan/pakakeh.go/lib/play/testdata\tXs\n","code":200}
+}