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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* 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/. */
// Test that the `JS::ubi::StackFrame`s we create from
// `mozilla::devtools::DeserializedStackFrame` instances look and behave as we
// would like.
#include "DevTools.h"
#include "js/ColumnNumber.h" // JS::LimitedColumnNumberOneOrigin, JS::TaggedColumnNumberOneOrigin
#include "js/SavedFrameAPI.h"
#include "js/TypeDecls.h"
#include "mozilla/devtools/DeserializedNode.h"
using testing::Field;
using testing::ReturnRef;
// A mock DeserializedStackFrame for testing.
struct MockDeserializedStackFrame : public DeserializedStackFrame {
MockDeserializedStackFrame() = default;
};
DEF_TEST(DeserializedStackFrameUbiStackFrames, {
StackFrameId id = uint64_t(1) << 42;
uint32_t line = 1337;
JS::TaggedColumnNumberOneOrigin column(
JS::LimitedColumnNumberOneOrigin(9)); // 3 space tabs!?
const char16_t* source = u"my-javascript-file.js";
const char16_t* functionDisplayName = u"myFunctionName";
MockDeserializedStackFrame mocked;
mocked.id = id;
mocked.line = line;
mocked.column = column;
mocked.source = source;
mocked.functionDisplayName = functionDisplayName;
DeserializedStackFrame& deserialized = mocked;
JS::ubi::StackFrame ubiFrame(&deserialized);
// Test the JS::ubi::StackFrame accessors.
EXPECT_EQ(id, ubiFrame.identifier());
EXPECT_EQ(JS::ubi::StackFrame(), ubiFrame.parent());
EXPECT_EQ(line, ubiFrame.line());
EXPECT_EQ(column, ubiFrame.column());
EXPECT_EQ(JS::ubi::AtomOrTwoByteChars(source), ubiFrame.source());
EXPECT_EQ(JS::ubi::AtomOrTwoByteChars(functionDisplayName),
ubiFrame.functionDisplayName());
EXPECT_FALSE(ubiFrame.isSelfHosted(cx));
EXPECT_FALSE(ubiFrame.isSystem());
JS::Rooted<JSObject*> savedFrame(cx);
EXPECT_TRUE(ubiFrame.constructSavedFrameStack(cx, &savedFrame));
JSPrincipals* principals = JS::GetRealmPrincipals(js::GetContextRealm(cx));
uint32_t frameLine;
ASSERT_EQ(JS::SavedFrameResult::Ok,
JS::GetSavedFrameLine(cx, principals, savedFrame, &frameLine));
EXPECT_EQ(line, frameLine);
JS::TaggedColumnNumberOneOrigin frameColumn;
ASSERT_EQ(JS::SavedFrameResult::Ok,
JS::GetSavedFrameColumn(cx, principals, savedFrame, &frameColumn));
EXPECT_EQ(column, frameColumn);
JS::Rooted<JSObject*> parent(cx);
ASSERT_EQ(JS::SavedFrameResult::Ok,
JS::GetSavedFrameParent(cx, principals, savedFrame, &parent));
EXPECT_EQ(nullptr, parent);
ASSERT_EQ(NS_strlen(source), 21U);
char16_t sourceBuf[21] = {};
// Test when the length is shorter than the string length.
auto written = ubiFrame.source(RangedPtr<char16_t>(sourceBuf), 3);
EXPECT_EQ(written, 3U);
for (size_t i = 0; i < 3; i++) {
EXPECT_EQ(sourceBuf[i], source[i]);
}
written = ubiFrame.source(RangedPtr<char16_t>(sourceBuf), 21);
EXPECT_EQ(written, 21U);
for (size_t i = 0; i < 21; i++) {
EXPECT_EQ(sourceBuf[i], source[i]);
}
ASSERT_EQ(NS_strlen(functionDisplayName), 14U);
char16_t nameBuf[14] = {};
written = ubiFrame.functionDisplayName(RangedPtr<char16_t>(nameBuf), 14);
EXPECT_EQ(written, 14U);
for (size_t i = 0; i < 14; i++) {
EXPECT_EQ(nameBuf[i], functionDisplayName[i]);
}
});
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