1 files changed, 127 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testPrintError.cpp b/js/src/jsapi-tests/testPrintError.cpp
new file mode 100644
index 0000000000..5f2f6cd5aa
--- /dev/null
+++ b/js/src/jsapi-tests/testPrintError.cpp
@@ -0,0 +1,127 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include <cstdio>  // fclose, fflush, open_memstream
+
+#include "jsapi.h"           // JS_{Clear,Get}PendingException
+#include "jsfriendapi.h"     // js::ErrorReport
+#include "js/ErrorReport.h"  // JS::PrintError
+#include "js/Warnings.h"     // JS::SetWarningReporter, JS::WarnUTF8
+
+#include "jsapi-tests/tests.h"
+
+class AutoStreamBuffer {
+  char* buffer;
+  size_t size;
+  FILE* fp;
+
+ public:
+  AutoStreamBuffer() { fp = open_memstream(&buffer, &size); }
+
+  ~AutoStreamBuffer() {
+    fclose(fp);
+    free(buffer);
+  }
+
+  FILE* stream() { return fp; }
+
+  bool contains(const char* str) {
+    if (fflush(fp) != 0) {
+      fprintf(stderr, "Error flushing stream\n");
+      return false;
+    }
+    if (strcmp(buffer, str) != 0) {
+      fprintf(stderr, "Expected |%s|, got |%s|\n", str, buffer);
+      return false;
+    }
+    return true;
+  }
+};
+
+BEGIN_TEST(testPrintError_Works) {
+  AutoStreamBuffer buf;
+
+  CHECK(!execDontReport("throw null;", "testPrintError_Works.js", 3));
+
+  JS::ExceptionStack exnStack(cx);
+  CHECK(JS::StealPendingExceptionStack(cx, &exnStack));
+
+  JS::ErrorReportBuilder builder(cx);
+  CHECK(builder.init(cx, exnStack, JS::ErrorReportBuilder::NoSideEffects));
+  JS::PrintError(cx, buf.stream(), builder, false);
+
+  CHECK(buf.contains("testPrintError_Works.js:3:1 uncaught exception: null\n"));
+
+  return true;
+}
+END_TEST(testPrintError_Works)
+
+BEGIN_TEST(testPrintError_SkipWarning) {
+  JS::SetWarningReporter(cx, warningReporter);
+  CHECK(JS::WarnUTF8(cx, "warning message"));
+  CHECK(warningSuccess);
+  return true;
+}
+
+static bool warningSuccess;
+
+static void warningReporter(JSContext* cx, JSErrorReport* report) {
+  AutoStreamBuffer buf;
+  JS::PrintError(cx, buf.stream(), report, false);
+  warningSuccess = buf.contains("");
+}
+END_TEST(testPrintError_SkipWarning)
+
+bool cls_testPrintError_SkipWarning::warningSuccess = false;
+
+BEGIN_TEST(testPrintError_PrintWarning) {
+  JS::SetWarningReporter(cx, warningReporter);
+  CHECK(JS::WarnUTF8(cx, "warning message"));
+  CHECK(warningSuccess);
+  return true;
+}
+
+static bool warningSuccess;
+
+static void warningReporter(JSContext* cx, JSErrorReport* report) {
+  AutoStreamBuffer buf;
+  JS::PrintError(cx, buf.stream(), report, true);
+  warningSuccess = buf.contains("warning: warning message\n");
+}
+END_TEST(testPrintError_PrintWarning)
+
+bool cls_testPrintError_PrintWarning::warningSuccess = false;
+
+#define BURRITO "\xF0\x9F\x8C\xAF"
+
+BEGIN_TEST(testPrintError_UTF16CodePoints) {
+  AutoStreamBuffer buf;
+
+  static const char utf8code[] =
+      "function f() {\n  var x = `\n" BURRITO "`; " BURRITO "; } f();";
+
+  CHECK(!execDontReport(utf8code, "testPrintError_UTF16CodePoints.js", 1));
+
+  JS::ExceptionStack exnStack(cx);
+  CHECK(JS::StealPendingExceptionStack(cx, &exnStack));
+
+  JS::ErrorReportBuilder builder(cx);
+  CHECK(builder.init(cx, exnStack, JS::ErrorReportBuilder::NoSideEffects));
+  JS::PrintError(cx, buf.stream(), builder, false);
+
+  CHECK(
+      buf.contains("testPrintError_UTF16CodePoints.js:3:4 SyntaxError: illegal "
+                   "character U+1F32F:\n"
+                   "testPrintError_UTF16CodePoints.js:3:4 " BURRITO
+                   "`; " BURRITO "; } f();\n"
+                   "testPrintError_UTF16CodePoints.js:3:4 .....^\n"));
+
+  return true;
+}
+END_TEST(testPrintError_UTF16CodePoints)
+
+#undef BURRITO