michael@0: /* -*- Mode: js; js-indent-level: 2; -*- */
michael@0: /* Any copyright is dedicated to the Public Domain.
michael@0:    http://creativecommons.org/publicdomain/zero/1.0/ */
michael@0: 
michael@0: // Test DevToolsUtils.safeErrorString
michael@0: 
michael@0: function run_test() {
michael@0:   test_with_error();
michael@0:   test_with_tricky_error();
michael@0:   test_with_string();
michael@0:   test_with_thrower();
michael@0:   test_with_psychotic();
michael@0: }
michael@0: 
michael@0: function test_with_error() {
michael@0:   let s = DevToolsUtils.safeErrorString(new Error("foo bar"));
michael@0:   // Got the message.
michael@0:   do_check_true(s.contains("foo bar"));
michael@0:   // Got the stack.
michael@0:   do_check_true(s.contains("test_with_error"))
michael@0:   do_check_true(s.contains("test_safeErrorString.js"));
michael@0:   // Got the lineNumber and columnNumber.
michael@0:   do_check_true(s.contains("Line"));
michael@0:   do_check_true(s.contains("column"));
michael@0: }
michael@0: 
michael@0: function test_with_tricky_error() {
michael@0:   let e = new Error("batman");
michael@0:   e.stack = { toString: Object.create(null) };
michael@0:   let s = DevToolsUtils.safeErrorString(e);
michael@0:   // Still got the message, despite a bad stack property.
michael@0:   do_check_true(s.contains("batman"));
michael@0: }
michael@0: 
michael@0: function test_with_string() {
michael@0:   let s = DevToolsUtils.safeErrorString("not really an error");
michael@0:   // Still get the message.
michael@0:   do_check_true(s.contains("not really an error"));
michael@0: }
michael@0: 
michael@0: function test_with_thrower() {
michael@0:   let s = DevToolsUtils.safeErrorString({
michael@0:     toString: () => {
michael@0:       throw new Error("Muahahaha");
michael@0:     }
michael@0:   });
michael@0:   // Still don't fail, get string back.
michael@0:   do_check_eq(typeof s, "string");
michael@0: }
michael@0: 
michael@0: function test_with_psychotic() {
michael@0:   let s = DevToolsUtils.safeErrorString({
michael@0:     toString: () => Object.create(null)
michael@0:   });
michael@0:   // Still get a string out, and no exceptions thrown
michael@0:   do_check_eq(typeof s, "string");
michael@0: }