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test-js: Sometimes include more details for failures

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LibJS doesn't store stacks for exception objects, so this
only amends test-common.js's __expect() with an optional
`details` function that can produce a more detailed error
message, and it lets test-js.cpp read and print that
error message.  I added the optional details parameter to
a few matchers, most notably toBe() where it now prints
expected and actual value.

It'd be nice to have line numbers of failures, but that
seems hard to do with the current design, and this is already
much better than the current state.
This commit is contained in:
Nico Weber 2020-08-21 21:53:54 -04:00 • committed by Andreas Kling
parent 3fbb02c3cc
commit 96891669c3
2 changed files with 26 additions and 14 deletions
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10
Userland/test-js.cpp
View file

@ -52,6 +52,7 @@ enum class TestResult {
struct JSTest {
String name;
TestResult result;
String details;
};
struct JSSuite {
@ -281,7 +282,7 @@ JSFileResult TestRunner::run_file_test(const String& test_path)
ASSERT(suite_value.is_object());
suite_value.as_object().for_each_member([&](const String& test_name, const JsonValue& test_value) {
JSTest test { test_name, TestResult::Fail };
JSTest test { test_name, TestResult::Fail, "" };
ASSERT(test_value.is_object());
ASSERT(test_value.as_object().has("result"));
@ -296,6 +297,10 @@ JSFileResult TestRunner::run_file_test(const String& test_path)
test.result = TestResult::Fail;
m_counts.tests_failed++;
suite.most_severe_test_result = TestResult::Fail;
ASSERT(test_value.as_object().has("details"));
auto details = test_value.as_object().get("details");
ASSERT(result.is_string());
test.details = details.as_string();
} else {
test.result = TestResult::Skip;
if (suite.most_severe_test_result == TestResult::Pass)
@ -476,7 +481,8 @@ void TestRunner::print_file_result(const JSFileResult& file_result) const
printf(" Test: ");
if (test.result == TestResult::Fail) {
print_modifiers({ CLEAR, FG_RED });
printf("%s (failed)\n", test.name.characters());
printf("%s (failed):\n", test.name.characters());
printf(" %s\n", test.details.characters());
} else {
print_modifiers({ CLEAR, FG_ORANGE });
printf("%s (skipped)\n", test.name.characters());