DeserializedStackFrameUbiStackFrames.cpp (3444B)
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ 2 /* This Source Code Form is subject to the terms of the Mozilla Public 3 * License, v. 2.0. If a copy of the MPL was not distributed with this 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 5 6 // Test that the `JS::ubi::StackFrame`s we create from 7 // `mozilla::devtools::DeserializedStackFrame` instances look and behave as we 8 // would like. 9 10 #include "DevTools.h" 11 #include "js/ColumnNumber.h" // JS::LimitedColumnNumberOneOrigin, JS::TaggedColumnNumberOneOrigin 12 #include "js/SavedFrameAPI.h" 13 #include "js/TypeDecls.h" 14 #include "mozilla/devtools/DeserializedNode.h" 15 16 using testing::Field; 17 using testing::ReturnRef; 18 19 // A mock DeserializedStackFrame for testing. 20 struct MockDeserializedStackFrame : public DeserializedStackFrame { 21 MockDeserializedStackFrame() = default; 22 }; 23 24 DEF_TEST(DeserializedStackFrameUbiStackFrames, { 25 StackFrameId id = uint64_t(1) << 42; 26 uint32_t line = 1337; 27 JS::TaggedColumnNumberOneOrigin column( 28 JS::LimitedColumnNumberOneOrigin(9)); // 3 space tabs!? 29 const char16_t* source = u"my-javascript-file.js"; 30 const char16_t* functionDisplayName = u"myFunctionName"; 31 32 MockDeserializedStackFrame mocked; 33 mocked.id = id; 34 mocked.line = line; 35 mocked.column = column; 36 mocked.source = source; 37 mocked.functionDisplayName = functionDisplayName; 38 39 DeserializedStackFrame& deserialized = mocked; 40 JS::ubi::StackFrame ubiFrame(&deserialized); 41 42 // Test the JS::ubi::StackFrame accessors. 43 44 EXPECT_EQ(id, ubiFrame.identifier()); 45 EXPECT_EQ(JS::ubi::StackFrame(), ubiFrame.parent()); 46 EXPECT_EQ(line, ubiFrame.line()); 47 EXPECT_EQ(column, ubiFrame.column()); 48 EXPECT_EQ(JS::ubi::AtomOrTwoByteChars(source), ubiFrame.source()); 49 EXPECT_EQ(JS::ubi::AtomOrTwoByteChars(functionDisplayName), 50 ubiFrame.functionDisplayName()); 51 EXPECT_FALSE(ubiFrame.isSelfHosted(cx)); 52 EXPECT_FALSE(ubiFrame.isSystem()); 53 54 JS::Rooted<JSObject*> savedFrame(cx); 55 EXPECT_TRUE(ubiFrame.constructSavedFrameStack(cx, &savedFrame)); 56 57 JSPrincipals* principals = JS::GetRealmPrincipals(js::GetContextRealm(cx)); 58 59 uint32_t frameLine; 60 ASSERT_EQ(JS::SavedFrameResult::Ok, 61 JS::GetSavedFrameLine(cx, principals, savedFrame, &frameLine)); 62 EXPECT_EQ(line, frameLine); 63 64 JS::TaggedColumnNumberOneOrigin frameColumn; 65 ASSERT_EQ(JS::SavedFrameResult::Ok, 66 JS::GetSavedFrameColumn(cx, principals, savedFrame, &frameColumn)); 67 EXPECT_EQ(column, frameColumn); 68 69 JS::Rooted<JSObject*> parent(cx); 70 ASSERT_EQ(JS::SavedFrameResult::Ok, 71 JS::GetSavedFrameParent(cx, principals, savedFrame, &parent)); 72 EXPECT_EQ(nullptr, parent); 73 74 ASSERT_EQ(NS_strlen(source), 21U); 75 char16_t sourceBuf[21] = {}; 76 77 // Test when the length is shorter than the string length. 78 auto written = ubiFrame.source(RangedPtr<char16_t>(sourceBuf), 3); 79 EXPECT_EQ(written, 3U); 80 for (size_t i = 0; i < 3; i++) { 81 EXPECT_EQ(sourceBuf[i], source[i]); 82 } 83 84 written = ubiFrame.source(RangedPtr<char16_t>(sourceBuf), 21); 85 EXPECT_EQ(written, 21U); 86 for (size_t i = 0; i < 21; i++) { 87 EXPECT_EQ(sourceBuf[i], source[i]); 88 } 89 90 ASSERT_EQ(NS_strlen(functionDisplayName), 14U); 91 char16_t nameBuf[14] = {}; 92 93 written = ubiFrame.functionDisplayName(RangedPtr<char16_t>(nameBuf), 14); 94 EXPECT_EQ(written, 14U); 95 for (size_t i = 0; i < 14; i++) { 96 EXPECT_EQ(nameBuf[i], functionDisplayName[i]); 97 } 98 });