Shit ton of tests

http/json_test.go

@@ -0,0 +1,45 @@
+package webutils_test
+
+import (
+	"io"
+	"net/http/httptest"
+	"testing"
+
+	webutils "git.mstar.dev/mstar/goutils/http"
+)
+
+func TestSendJsonOk(t *testing.T) {
+	recorder := httptest.NewRecorder()
+	err := webutils.SendJson(recorder, map[string]any{
+		"a": 1,
+		"b": "b",
+		"c": nil,
+	})
+	if err != nil {
+		t.Fatalf("error while sending json: %v", err)
+	}
+	res := recorder.Result()
+	if ctype := res.Header.Get("Content-Type"); ctype != "application/json" {
+		t.Fatalf("expected content type \"application/json\", got %v", ctype)
+	}
+	// httptest guarantees body to be functional and only returned error will be EOL
+	// so no need to watch for error
+	bodyBytes, _ := io.ReadAll(res.Body)
+	body := string(bodyBytes)
+	expected := `{"a":1,"b":"b","c":null}`
+	if body != expected {
+		t.Fatalf("Expected %v as body, got %v", expected, body)
+	}
+}
+
+func TestSendJsonNotMarshallable(t *testing.T) {
+	recorder := httptest.NewRecorder()
+	err := webutils.SendJson(recorder, map[string]any{
+		"a": 1,
+		"b": "b",
+		"c": make(chan any),
+	})
+	if err == nil {
+		t.Fatal("expected json marshalling error")
+	}
+}