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ScreenBufferTests.cpp
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
#include "precomp.h"
#include "WexTestClass.h"
#include "../../inc/consoletaeftemplates.hpp"
#include "CommonState.hpp"
#include "globals.h"
#include "screenInfo.hpp"
#include "input.h"
#include "getset.h"
#include "_stream.h" // For WriteCharsLegacy
#include "output.h" // For ScrollRegion
#include "../interactivity/inc/ServiceLocator.hpp"
#include "../../inc/conattrs.hpp"
#include "../../types/inc/colorTable.hpp"
#include "../../types/inc/Viewport.hpp"
#include "../../inc/TestUtils.h"
#include <sstream>
using namespace WEX::Common;
using namespace WEX::Logging;
using namespace WEX::TestExecution;
using namespace Microsoft::Console::Types;
using namespace Microsoft::Console::Interactivity;
using namespace Microsoft::Console::Render;
using namespace Microsoft::Console::VirtualTerminal;
using namespace TerminalCoreUnitTests;
class ScreenBufferTests
{
CommonState* m_state;
TEST_CLASS(ScreenBufferTests);
TEST_CLASS_SETUP(ClassSetup)
{
m_state = new CommonState();
m_state->InitEvents();
m_state->PrepareGlobalFont({ 1, 1 });
m_state->PrepareGlobalRenderer();
m_state->PrepareGlobalInputBuffer();
m_state->PrepareGlobalScreenBuffer();
return true;
}
TEST_CLASS_CLEANUP(ClassCleanup)
{
m_state->CleanupGlobalScreenBuffer();
m_state->CleanupGlobalRenderer();
m_state->CleanupGlobalInputBuffer();
delete m_state;
return true;
}
TEST_METHOD_SETUP(MethodSetup)
{
// Set up some sane defaults
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
gci.SetColorTableEntry(TextColor::DEFAULT_FOREGROUND, INVALID_COLOR);
gci.SetColorTableEntry(TextColor::DEFAULT_BACKGROUND, INVALID_COLOR);
gci.SetFillAttribute(0x07); // DARK_WHITE on DARK_BLACK
gci.CalculateDefaultColorIndices();
m_state->PrepareNewTextBufferInfo();
auto& currentBuffer = gci.GetActiveOutputBuffer();
// Make sure a test hasn't left us in the alt buffer on accident
VERIFY_IS_FALSE(currentBuffer._IsAltBuffer());
VERIFY_SUCCEEDED(currentBuffer.SetViewportOrigin(true, { 0, 0 }, true));
// Make sure the viewport always starts off at the default size.
auto defaultSize = til::size{ CommonState::s_csWindowWidth, CommonState::s_csWindowHeight };
currentBuffer.SetViewport(Viewport::FromDimensions({}, defaultSize), true);
VERIFY_ARE_EQUAL(til::point(0, 0), currentBuffer.GetTextBuffer().GetCursor().GetPosition());
// Make sure the virtual bottom is correctly positioned.
currentBuffer.UpdateBottom();
return true;
}
TEST_METHOD_CLEANUP(MethodCleanup)
{
m_state->CleanupNewTextBufferInfo();
return true;
}
TEST_METHOD(SingleAlternateBufferCreationTest);
TEST_METHOD(MultipleAlternateBufferCreationTest);
TEST_METHOD(MultipleAlternateBuffersFromMainCreationTest);
TEST_METHOD(AlternateBufferCursorInheritanceTest);
TEST_METHOD(TestReverseLineFeed);
TEST_METHOD(TestResetClearTabStops);
TEST_METHOD(TestAddTabStop);
TEST_METHOD(TestClearTabStop);
TEST_METHOD(TestGetForwardTab);
TEST_METHOD(TestGetReverseTab);
TEST_METHOD(TestAltBufferTabStops);
TEST_METHOD(EraseAllTests);
TEST_METHOD(InactiveControlCharactersTest);
TEST_METHOD(VtResize);
TEST_METHOD(VtResizeComprehensive);
TEST_METHOD(VtResizeDECCOLM);
TEST_METHOD(VtResizePreservingAttributes);
TEST_METHOD(VtSoftResetCursorPosition);
TEST_METHOD(VtScrollMarginsNewlineColor);
TEST_METHOD(VtNewlinePastViewport);
TEST_METHOD(VtNewlinePastEndOfBuffer);
TEST_METHOD(VtNewlineOutsideMargins);
TEST_METHOD(VtSetColorTable);
TEST_METHOD(VtRestoreColorTableReport);
TEST_METHOD(ResizeTraditionalDoesNotDoubleFreeAttrRows);
TEST_METHOD(ResizeCursorUnchanged);
TEST_METHOD(ResizeAltBuffer);
TEST_METHOD(ResizeAltBufferGetScreenBufferInfo);
TEST_METHOD(VtEraseAllPersistCursor);
TEST_METHOD(VtEraseAllPersistCursorFillColor);
TEST_METHOD(GetWordBoundary);
void GetWordBoundaryTrimZeros(bool on);
TEST_METHOD(GetWordBoundaryTrimZerosOn);
TEST_METHOD(GetWordBoundaryTrimZerosOff);
TEST_METHOD(TestAltBufferCursorState);
TEST_METHOD(TestAltBufferVtDispatching);
TEST_METHOD(TestAltBufferRIS);
TEST_METHOD(SetDefaultsIndividuallyBothDefault);
TEST_METHOD(SetDefaultsTogether);
TEST_METHOD(ReverseResetWithDefaultBackground);
TEST_METHOD(BackspaceDefaultAttrs);
TEST_METHOD(BackspaceDefaultAttrsWriteCharsLegacy);
TEST_METHOD(BackspaceDefaultAttrsInPrompt);
TEST_METHOD(SetGlobalColorTable);
TEST_METHOD(SetColorTableThreeDigits);
TEST_METHOD(SetDefaultForegroundColor);
TEST_METHOD(SetDefaultBackgroundColor);
TEST_METHOD(AssignColorAliases);
TEST_METHOD(DeleteCharsNearEndOfLine);
TEST_METHOD(DeleteCharsNearEndOfLineSimpleFirstCase);
TEST_METHOD(DeleteCharsNearEndOfLineSimpleSecondCase);
TEST_METHOD(DontResetColorsAboveVirtualBottom);
TEST_METHOD(ScrollOperations);
TEST_METHOD(InsertReplaceMode);
TEST_METHOD(InsertChars);
TEST_METHOD(DeleteChars);
TEST_METHOD(HorizontalScrollOperations);
TEST_METHOD(ScrollingWideCharsHorizontally);
TEST_METHOD(EraseScrollbackTests);
TEST_METHOD(EraseTests);
TEST_METHOD(ProtectedAttributeTests);
TEST_METHOD(ScrollUpInMargins);
TEST_METHOD(ScrollDownInMargins);
TEST_METHOD(InsertLinesInMargins);
TEST_METHOD(DeleteLinesInMargins);
TEST_METHOD(ReverseLineFeedInMargins);
TEST_METHOD(LineFeedEscapeSequences);
TEST_METHOD(ScrollLines256Colors);
TEST_METHOD(SetLineFeedMode);
TEST_METHOD(SetScreenMode);
TEST_METHOD(SetOriginMode);
TEST_METHOD(SetAutoWrapMode);
TEST_METHOD(HardResetBuffer);
TEST_METHOD(RestoreDownAltBufferWithTerminalScrolling);
TEST_METHOD(SnapCursorWithTerminalScrolling);
TEST_METHOD(ClearAlternateBuffer);
TEST_METHOD(TestExtendedTextAttributes);
TEST_METHOD(TestExtendedTextAttributesWithColors);
TEST_METHOD(CursorUpDownAcrossMargins);
TEST_METHOD(CursorUpDownOutsideMargins);
TEST_METHOD(CursorUpDownExactlyAtMargins);
TEST_METHOD(CursorLeftRightAcrossMargins);
TEST_METHOD(CursorLeftRightOutsideMargins);
TEST_METHOD(CursorLeftRightExactlyAtMargins);
TEST_METHOD(CursorNextPreviousLine);
TEST_METHOD(CursorPositionRelative);
TEST_METHOD(CursorSaveRestore);
TEST_METHOD(ScreenAlignmentPattern);
TEST_METHOD(TestCursorIsOn);
TEST_METHOD(TestAddHyperlink);
TEST_METHOD(TestAddHyperlinkCustomId);
TEST_METHOD(TestAddHyperlinkCustomIdDifferentUri);
TEST_METHOD(UpdateVirtualBottomWhenCursorMovesBelowIt);
TEST_METHOD(UpdateVirtualBottomWithSetConsoleCursorPosition);
TEST_METHOD(UpdateVirtualBottomAfterInternalSetViewportSize);
TEST_METHOD(UpdateVirtualBottomAfterResizeWithReflow);
TEST_METHOD(DontShrinkVirtualBottomDuringResizeWithReflowAtTop);
TEST_METHOD(DontChangeVirtualBottomWithOffscreenLinefeed);
TEST_METHOD(DontChangeVirtualBottomAfterResizeWindow);
TEST_METHOD(DontChangeVirtualBottomWithMakeCursorVisible);
TEST_METHOD(RetainHorizontalOffsetWhenMovingToBottom);
TEST_METHOD(TestReflowEndOfLineColor);
TEST_METHOD(TestReflowSmallerLongLineWithColor);
TEST_METHOD(TestReflowBiggerLongLineWithColor);
TEST_METHOD(TestDeferredMainBufferResize);
TEST_METHOD(RectangularAreaOperations);
TEST_METHOD(CopyDoubleWidthRectangularArea);
TEST_METHOD(DelayedWrapReset);
TEST_METHOD(MultilineWrap);
TEST_METHOD(EraseColorMode);
TEST_METHOD(SimpleMarkCommand);
TEST_METHOD(SimpleWrappedCommand);
TEST_METHOD(SimplePromptRegions);
};
void ScreenBufferTests::SingleAlternateBufferCreationTest()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
gci.LockConsole(); // Lock must be taken to manipulate buffer.
auto unlock = wil::scope_exit([&] { gci.UnlockConsole(); });
Log::Comment(L"Testing creating one alternate buffer, then returning to the main buffer.");
const auto psiOriginal = &gci.GetActiveOutputBuffer();
VERIFY_IS_NULL(psiOriginal->_psiAlternateBuffer);
VERIFY_IS_NULL(psiOriginal->_psiMainBuffer);
auto Status = psiOriginal->UseAlternateScreenBuffer({});
if (VERIFY_NT_SUCCESS(Status))
{
Log::Comment(L"First alternate buffer successfully created");
const auto psiFirstAlternate = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiOriginal, psiFirstAlternate);
VERIFY_ARE_EQUAL(psiFirstAlternate, psiOriginal->_psiAlternateBuffer);
VERIFY_ARE_EQUAL(psiOriginal, psiFirstAlternate->_psiMainBuffer);
VERIFY_IS_NULL(psiOriginal->_psiMainBuffer);
VERIFY_IS_NULL(psiFirstAlternate->_psiAlternateBuffer);
psiFirstAlternate->UseMainScreenBuffer();
Log::Comment(L"successfully swapped to the main buffer");
const auto psiFinal = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiFinal, psiFirstAlternate);
VERIFY_ARE_EQUAL(psiFinal, psiOriginal);
VERIFY_IS_NULL(psiFinal->_psiMainBuffer);
VERIFY_IS_NULL(psiFinal->_psiAlternateBuffer);
}
}
void ScreenBufferTests::MultipleAlternateBufferCreationTest()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
gci.LockConsole(); // Lock must be taken to manipulate buffer.
auto unlock = wil::scope_exit([&] { gci.UnlockConsole(); });
Log::Comment(
L"Testing creating one alternate buffer, then creating another "
L"alternate from that first alternate, before returning to the "
L"main buffer.");
const auto psiOriginal = &gci.GetActiveOutputBuffer();
auto Status = psiOriginal->UseAlternateScreenBuffer({});
if (VERIFY_NT_SUCCESS(Status))
{
Log::Comment(L"First alternate buffer successfully created");
const auto psiFirstAlternate = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiOriginal, psiFirstAlternate);
VERIFY_ARE_EQUAL(psiFirstAlternate, psiOriginal->_psiAlternateBuffer);
VERIFY_ARE_EQUAL(psiOriginal, psiFirstAlternate->_psiMainBuffer);
VERIFY_IS_NULL(psiOriginal->_psiMainBuffer);
VERIFY_IS_NULL(psiFirstAlternate->_psiAlternateBuffer);
Status = psiFirstAlternate->UseAlternateScreenBuffer({});
if (VERIFY_NT_SUCCESS(Status))
{
Log::Comment(L"Second alternate buffer successfully created");
auto psiSecondAlternate = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiOriginal, psiSecondAlternate);
VERIFY_ARE_NOT_EQUAL(psiSecondAlternate, psiFirstAlternate);
VERIFY_ARE_EQUAL(psiSecondAlternate, psiOriginal->_psiAlternateBuffer);
VERIFY_ARE_EQUAL(psiOriginal, psiSecondAlternate->_psiMainBuffer);
VERIFY_IS_NULL(psiOriginal->_psiMainBuffer);
VERIFY_IS_NULL(psiSecondAlternate->_psiAlternateBuffer);
psiSecondAlternate->UseMainScreenBuffer();
Log::Comment(L"successfully swapped to the main buffer");
const auto psiFinal = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiFinal, psiFirstAlternate);
VERIFY_ARE_NOT_EQUAL(psiFinal, psiSecondAlternate);
VERIFY_ARE_EQUAL(psiFinal, psiOriginal);
VERIFY_IS_NULL(psiFinal->_psiMainBuffer);
VERIFY_IS_NULL(psiFinal->_psiAlternateBuffer);
}
}
}
void ScreenBufferTests::MultipleAlternateBuffersFromMainCreationTest()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
gci.LockConsole(); // Lock must be taken to manipulate buffer.
auto unlock = wil::scope_exit([&] { gci.UnlockConsole(); });
Log::Comment(
L"Testing creating one alternate buffer, then creating another"
L" alternate from the main, before returning to the main buffer.");
const auto psiOriginal = &gci.GetActiveOutputBuffer();
auto Status = psiOriginal->UseAlternateScreenBuffer({});
if (VERIFY_NT_SUCCESS(Status))
{
Log::Comment(L"First alternate buffer successfully created");
const auto psiFirstAlternate = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiOriginal, psiFirstAlternate);
VERIFY_ARE_EQUAL(psiFirstAlternate, psiOriginal->_psiAlternateBuffer);
VERIFY_ARE_EQUAL(psiOriginal, psiFirstAlternate->_psiMainBuffer);
VERIFY_IS_NULL(psiOriginal->_psiMainBuffer);
VERIFY_IS_NULL(psiFirstAlternate->_psiAlternateBuffer);
Status = psiOriginal->UseAlternateScreenBuffer({});
if (VERIFY_NT_SUCCESS(Status))
{
Log::Comment(L"Second alternate buffer successfully created");
const auto psiSecondAlternate = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiOriginal, psiSecondAlternate);
VERIFY_ARE_NOT_EQUAL(psiSecondAlternate, psiFirstAlternate);
VERIFY_ARE_EQUAL(psiSecondAlternate, psiOriginal->_psiAlternateBuffer);
VERIFY_ARE_EQUAL(psiOriginal, psiSecondAlternate->_psiMainBuffer);
VERIFY_IS_NULL(psiOriginal->_psiMainBuffer);
VERIFY_IS_NULL(psiSecondAlternate->_psiAlternateBuffer);
psiSecondAlternate->UseMainScreenBuffer();
Log::Comment(L"successfully swapped to the main buffer");
const auto psiFinal = &gci.GetActiveOutputBuffer();
VERIFY_ARE_NOT_EQUAL(psiFinal, psiFirstAlternate);
VERIFY_ARE_NOT_EQUAL(psiFinal, psiSecondAlternate);
VERIFY_ARE_EQUAL(psiFinal, psiOriginal);
VERIFY_IS_NULL(psiFinal->_psiMainBuffer);
VERIFY_IS_NULL(psiFinal->_psiAlternateBuffer);
}
}
}
void ScreenBufferTests::AlternateBufferCursorInheritanceTest()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
gci.LockConsole(); // Lock must be taken to manipulate buffer.
auto unlock = wil::scope_exit([&] { gci.UnlockConsole(); });
auto& mainBuffer = gci.GetActiveOutputBuffer();
auto& mainCursor = mainBuffer.GetTextBuffer().GetCursor();
Log::Comment(L"Set the cursor attributes in the main buffer.");
auto mainCursorPos = til::point{ 3, 5 };
auto mainCursorVisible = false;
auto mainCursorSize = 33u;
auto mainCursorType = CursorType::DoubleUnderscore;
auto mainCursorBlinking = false;
mainCursor.SetPosition(mainCursorPos);
mainCursor.SetIsVisible(mainCursorVisible);
mainCursor.SetStyle(mainCursorSize, mainCursorType);
mainCursor.SetBlinkingAllowed(mainCursorBlinking);
Log::Comment(L"Switch to the alternate buffer.");
VERIFY_SUCCEEDED(mainBuffer.UseAlternateScreenBuffer({}));
auto& altBuffer = gci.GetActiveOutputBuffer();
auto& altCursor = altBuffer.GetTextBuffer().GetCursor();
auto useMain = wil::scope_exit([&] { altBuffer.UseMainScreenBuffer(); });
Log::Comment(L"Confirm the cursor position is inherited from the main buffer.");
VERIFY_ARE_EQUAL(mainCursorPos, altCursor.GetPosition());
Log::Comment(L"Confirm the cursor visibility is inherited from the main buffer.");
VERIFY_ARE_EQUAL(mainCursorVisible, altCursor.IsVisible());
Log::Comment(L"Confirm the cursor style is inherited from the main buffer.");
VERIFY_ARE_EQUAL(mainCursorSize, altCursor.GetSize());
VERIFY_ARE_EQUAL(mainCursorType, altCursor.GetType());
VERIFY_ARE_EQUAL(mainCursorBlinking, altCursor.IsBlinkingAllowed());
Log::Comment(L"Set the cursor attributes in the alt buffer.");
auto altCursorPos = til::point{ 5, 3 };
auto altCursorVisible = true;
auto altCursorSize = 66u;
auto altCursorType = CursorType::EmptyBox;
auto altCursorBlinking = true;
altCursor.SetPosition(altCursorPos);
altCursor.SetIsVisible(altCursorVisible);
altCursor.SetStyle(altCursorSize, altCursorType);
altCursor.SetBlinkingAllowed(altCursorBlinking);
Log::Comment(L"Switch back to the main buffer.");
useMain.release();
altBuffer.UseMainScreenBuffer();
VERIFY_ARE_EQUAL(&mainBuffer, &gci.GetActiveOutputBuffer());
Log::Comment(L"Confirm the cursor position is restored to what it was.");
VERIFY_ARE_EQUAL(mainCursorPos, mainCursor.GetPosition());
Log::Comment(L"Confirm the cursor visibility is inherited from the alt buffer.");
VERIFY_ARE_EQUAL(altCursorVisible, mainCursor.IsVisible());
Log::Comment(L"Confirm the cursor style is inherited from the alt buffer.");
VERIFY_ARE_EQUAL(altCursorSize, mainCursor.GetSize());
VERIFY_ARE_EQUAL(altCursorType, mainCursor.GetType());
VERIFY_ARE_EQUAL(altCursorBlinking, mainCursor.IsBlinkingAllowed());
}
void ScreenBufferTests::TestReverseLineFeed()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& screenInfo = gci.GetActiveOutputBuffer();
auto& stateMachine = screenInfo.GetStateMachine();
auto& cursor = screenInfo._textBuffer->GetCursor();
auto viewport = screenInfo.GetViewport();
const auto reverseLineFeed = L"\033M";
VERIFY_ARE_EQUAL(viewport.Top(), 0);
////////////////////////////////////////////////////////////////////////
Log::Comment(L"Case 1: RI from below top of viewport");
stateMachine.ProcessString(L"foo\nfoo");
VERIFY_ARE_EQUAL(cursor.GetPosition().x, 3);
VERIFY_ARE_EQUAL(cursor.GetPosition().y, 1);
VERIFY_ARE_EQUAL(viewport.Top(), 0);
stateMachine.ProcessString(reverseLineFeed);
VERIFY_ARE_EQUAL(cursor.GetPosition().x, 3);
VERIFY_ARE_EQUAL(cursor.GetPosition().y, 0);
viewport = screenInfo.GetViewport();
VERIFY_ARE_EQUAL(viewport.Top(), 0);
Log::Comment(NoThrowString().Format(
L"viewport={L:%d,T:%d,R:%d,B:%d}",
viewport.Left(),
viewport.Top(),
viewport.RightInclusive(),
viewport.BottomInclusive()));
////////////////////////////////////////////////////////////////////////
Log::Comment(L"Case 2: RI from top of viewport");
cursor.SetPosition({ 0, 0 });
stateMachine.ProcessString(L"123456789");
VERIFY_ARE_EQUAL(cursor.GetPosition().x, 9);
VERIFY_ARE_EQUAL(cursor.GetPosition().y, 0);
VERIFY_ARE_EQUAL(screenInfo.GetViewport().Top(), 0);
stateMachine.ProcessString(reverseLineFeed);
VERIFY_ARE_EQUAL(cursor.GetPosition().x, 9);
VERIFY_ARE_EQUAL(cursor.GetPosition().y, 0);
viewport = screenInfo.GetViewport();
VERIFY_ARE_EQUAL(viewport.Top(), 0);
Log::Comment(NoThrowString().Format(
L"viewport={L:%d,T:%d,R:%d,B:%d}",
viewport.Left(),
viewport.Top(),
viewport.RightInclusive(),
viewport.BottomInclusive()));
auto c = screenInfo._textBuffer->GetLastNonSpaceCharacter();
VERIFY_ARE_EQUAL(c.y, 2); // This is the coordinates of the second "foo" from before.
////////////////////////////////////////////////////////////////////////
Log::Comment(L"Case 3: RI from top of viewport, when viewport is below top of buffer");
cursor.SetPosition({ 0, 5 });
VERIFY_SUCCEEDED(screenInfo.SetViewportOrigin(true, { 0, 5 }, true));
stateMachine.ProcessString(L"ABCDEFGH");
VERIFY_ARE_EQUAL(cursor.GetPosition().x, 8);
VERIFY_ARE_EQUAL(cursor.GetPosition().y, 5);
VERIFY_ARE_EQUAL(screenInfo.GetViewport().Top(), 5);
stateMachine.ProcessString(reverseLineFeed);
VERIFY_ARE_EQUAL(cursor.GetPosition().x, 8);
VERIFY_ARE_EQUAL(cursor.GetPosition().y, 5);
viewport = screenInfo.GetViewport();
VERIFY_ARE_EQUAL(viewport.Top(), 5);
Log::Comment(NoThrowString().Format(
L"viewport={L:%d,T:%d,R:%d,B:%d}",
viewport.Left(),
viewport.Top(),
viewport.RightInclusive(),
viewport.BottomInclusive()));
c = screenInfo._textBuffer->GetLastNonSpaceCharacter();
VERIFY_ARE_EQUAL(c.y, 6);
}
void _SetTabStops(SCREEN_INFORMATION& screenInfo, std::list<til::CoordType> columns, bool replace)
{
auto& stateMachine = screenInfo.GetStateMachine();
auto& cursor = screenInfo.GetTextBuffer().GetCursor();
const auto clearTabStops = L"\033[3g";
const auto addTabStop = L"\033H";
if (replace)
{
stateMachine.ProcessString(clearTabStops);
}
for (auto column : columns)
{
cursor.SetXPosition(column);
stateMachine.ProcessString(addTabStop);
}
}
std::list<til::CoordType> _GetTabStops(SCREEN_INFORMATION& screenInfo)
{
std::list<til::CoordType> columns;
const auto lastColumn = screenInfo.GetBufferSize().RightInclusive();
auto& stateMachine = screenInfo.GetStateMachine();
auto& cursor = screenInfo.GetTextBuffer().GetCursor();
cursor.SetPosition({ 0, 0 });
for (;;)
{
stateMachine.ProcessCharacter(L'\t');
auto column = cursor.GetPosition().x;
if (column >= lastColumn)
{
break;
}
columns.push_back(column);
}
return columns;
}
void ScreenBufferTests::TestResetClearTabStops()
{
// Reset the screen buffer to test the defaults.
m_state->CleanupNewTextBufferInfo();
m_state->CleanupGlobalScreenBuffer();
m_state->CleanupGlobalRenderer();
m_state->PrepareGlobalRenderer();
m_state->PrepareGlobalScreenBuffer();
m_state->PrepareNewTextBufferInfo();
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& screenInfo = gci.GetActiveOutputBuffer();
auto& stateMachine = screenInfo.GetStateMachine();
const auto clearTabStops = L"\033[3g";
const auto resetToInitialState = L"\033c";
Log::Comment(L"Default tabs every 8 columns.");
std::list<til::CoordType> expectedStops{ 8, 16, 24, 32, 40, 48, 56, 64, 72 };
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"Clear all tabs.");
stateMachine.ProcessString(clearTabStops);
expectedStops = {};
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"RIS resets tabs to defaults.");
stateMachine.ProcessString(resetToInitialState);
expectedStops = { 8, 16, 24, 32, 40, 48, 56, 64, 72 };
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"DECST8C with 5 parameter resets tabs to defaults.");
stateMachine.ProcessString(clearTabStops);
stateMachine.ProcessString(L"\033[?5W");
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"DECST8C with omitted parameter resets tabs to defaults.");
stateMachine.ProcessString(clearTabStops);
stateMachine.ProcessString(L"\033[?W");
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
}
void ScreenBufferTests::TestAddTabStop()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& screenInfo = gci.GetActiveOutputBuffer();
auto& stateMachine = screenInfo.GetStateMachine();
auto& cursor = screenInfo.GetTextBuffer().GetCursor();
const auto clearTabStops = L"\033[3g";
const auto addTabStop = L"\033H";
Log::Comment(L"Clear all tabs.");
stateMachine.ProcessString(clearTabStops);
std::list<til::CoordType> expectedStops{};
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"Add tab to empty list.");
cursor.SetXPosition(12);
stateMachine.ProcessString(addTabStop);
expectedStops.push_back(12);
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"Add tab to head of existing list.");
cursor.SetXPosition(4);
stateMachine.ProcessString(addTabStop);
expectedStops.push_front(4);
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"Add tab to tail of existing list.");
cursor.SetXPosition(30);
stateMachine.ProcessString(addTabStop);
expectedStops.push_back(30);
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"Add tab to middle of existing list.");
cursor.SetXPosition(24);
stateMachine.ProcessString(addTabStop);
expectedStops.push_back(24);
expectedStops.sort();
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
Log::Comment(L"Add tab that duplicates an item in the existing list.");
cursor.SetXPosition(24);
stateMachine.ProcessString(addTabStop);
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(screenInfo));
}
void ScreenBufferTests::TestClearTabStop()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& screenInfo = gci.GetActiveOutputBuffer();
auto& stateMachine = screenInfo.GetStateMachine();
auto& cursor = screenInfo.GetTextBuffer().GetCursor();
const auto clearTabStops = L"\033[3g";
const auto clearTabStop = L"\033[0g";
const auto addTabStop = L"\033H";
Log::Comment(L"Start with all tabs cleared.");
{
stateMachine.ProcessString(clearTabStops);
VERIFY_IS_TRUE(_GetTabStops(screenInfo).empty());
}
Log::Comment(L"Try to clear nonexistent list.");
{
cursor.SetXPosition(0);
stateMachine.ProcessString(clearTabStop);
VERIFY_IS_TRUE(_GetTabStops(screenInfo).empty(), L"List should remain empty");
}
Log::Comment(L"Allocate 1 list item and clear it.");
{
cursor.SetXPosition(0);
stateMachine.ProcessString(addTabStop);
stateMachine.ProcessString(clearTabStop);
VERIFY_IS_TRUE(_GetTabStops(screenInfo).empty());
}
Log::Comment(L"Allocate 1 list item and clear nonexistent.");
{
cursor.SetXPosition(1);
stateMachine.ProcessString(addTabStop);
Log::Comment(L"Free greater");
cursor.SetXPosition(2);
stateMachine.ProcessString(clearTabStop);
VERIFY_IS_FALSE(_GetTabStops(screenInfo).empty());
Log::Comment(L"Free less than");
cursor.SetXPosition(0);
stateMachine.ProcessString(clearTabStop);
VERIFY_IS_FALSE(_GetTabStops(screenInfo).empty());
// clear all tab stops
stateMachine.ProcessString(clearTabStops);
}
Log::Comment(L"Allocate many (5) list items and clear head.");
{
std::list<til::CoordType> inputData = { 3, 5, 6, 10, 15, 17 };
_SetTabStops(screenInfo, inputData, false);
cursor.SetXPosition(inputData.front());
stateMachine.ProcessString(clearTabStop);
inputData.pop_front();
VERIFY_ARE_EQUAL(inputData, _GetTabStops(screenInfo));
// clear all tab stops
stateMachine.ProcessString(clearTabStops);
}
Log::Comment(L"Allocate many (5) list items and clear middle.");
{
std::list<til::CoordType> inputData = { 3, 5, 6, 10, 15, 17 };
_SetTabStops(screenInfo, inputData, false);
cursor.SetXPosition(*std::next(inputData.begin()));
stateMachine.ProcessString(clearTabStop);
inputData.erase(std::next(inputData.begin()));
VERIFY_ARE_EQUAL(inputData, _GetTabStops(screenInfo));
// clear all tab stops
stateMachine.ProcessString(clearTabStops);
}
Log::Comment(L"Allocate many (5) list items and clear tail.");
{
std::list<til::CoordType> inputData = { 3, 5, 6, 10, 15, 17 };
_SetTabStops(screenInfo, inputData, false);
cursor.SetXPosition(inputData.back());
stateMachine.ProcessString(clearTabStop);
inputData.pop_back();
VERIFY_ARE_EQUAL(inputData, _GetTabStops(screenInfo));
// clear all tab stops
stateMachine.ProcessString(clearTabStops);
}
Log::Comment(L"Allocate many (5) list items and clear nonexistent item.");
{
std::list<til::CoordType> inputData = { 3, 5, 6, 10, 15, 17 };
_SetTabStops(screenInfo, inputData, false);
cursor.SetXPosition(0);
stateMachine.ProcessString(clearTabStop);
VERIFY_ARE_EQUAL(inputData, _GetTabStops(screenInfo));
// clear all tab stops
stateMachine.ProcessString(clearTabStops);
}
}
void ScreenBufferTests::TestGetForwardTab()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& si = gci.GetActiveOutputBuffer();
auto& stateMachine = si.GetStateMachine();
auto& cursor = si.GetTextBuffer().GetCursor();
const auto nextForwardTab = L"\033[I";
std::list<til::CoordType> inputData = { 3, 5, 6, 10, 15, 17 };
_SetTabStops(si, inputData, true);
const auto coordScreenBufferSize = si.GetBufferSize().Dimensions();
Log::Comment(L"Find next tab from before front.");
{
cursor.SetXPosition(0);
auto coordCursorExpected = cursor.GetPosition();
coordCursorExpected.x = inputData.front();
stateMachine.ProcessString(nextForwardTab);
const auto coordCursorResult = cursor.GetPosition();
VERIFY_ARE_EQUAL(coordCursorExpected,
coordCursorResult,
L"Cursor advanced to first tab stop from sample list.");
}
Log::Comment(L"Find next tab from in the middle.");
{
cursor.SetXPosition(6);
auto coordCursorExpected = cursor.GetPosition();
coordCursorExpected.x = *std::next(inputData.begin(), 3);
stateMachine.ProcessString(nextForwardTab);
const auto coordCursorResult = cursor.GetPosition();
VERIFY_ARE_EQUAL(coordCursorExpected,
coordCursorResult,
L"Cursor advanced to middle tab stop from sample list.");
}
Log::Comment(L"Find next tab from end.");
{
cursor.SetXPosition(30);
auto coordCursorExpected = cursor.GetPosition();
coordCursorExpected.x = coordScreenBufferSize.width - 1;
stateMachine.ProcessString(nextForwardTab);
const auto coordCursorResult = cursor.GetPosition();
VERIFY_ARE_EQUAL(coordCursorExpected,
coordCursorResult,
L"Cursor advanced to end of screen buffer.");
}
Log::Comment(L"Find next tab from rightmost column.");
{
cursor.SetXPosition(coordScreenBufferSize.width - 1);
auto coordCursorExpected = cursor.GetPosition();
stateMachine.ProcessString(nextForwardTab);
const auto coordCursorResult = cursor.GetPosition();
VERIFY_ARE_EQUAL(coordCursorExpected,
coordCursorResult,
L"Cursor remains in rightmost column.");
}
}
void ScreenBufferTests::TestGetReverseTab()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& si = gci.GetActiveOutputBuffer();
auto& stateMachine = si.GetStateMachine();
auto& cursor = si.GetTextBuffer().GetCursor();
const auto nextReverseTab = L"\033[Z";
std::list<til::CoordType> inputData = { 3, 5, 6, 10, 15, 17 };
_SetTabStops(si, inputData, true);
Log::Comment(L"Find previous tab from before front.");
{
cursor.SetXPosition(1);
auto coordCursorExpected = cursor.GetPosition();
coordCursorExpected.x = 0;
stateMachine.ProcessString(nextReverseTab);
const auto coordCursorResult = cursor.GetPosition();
VERIFY_ARE_EQUAL(coordCursorExpected,
coordCursorResult,
L"Cursor adjusted to beginning of the buffer when it started before sample list.");
}
Log::Comment(L"Find previous tab from in the middle.");
{
cursor.SetXPosition(6);
auto coordCursorExpected = cursor.GetPosition();
coordCursorExpected.x = *std::next(inputData.begin());
stateMachine.ProcessString(nextReverseTab);
const auto coordCursorResult = cursor.GetPosition();
VERIFY_ARE_EQUAL(coordCursorExpected,
coordCursorResult,
L"Cursor adjusted back one tab spot from middle of sample list.");
}
Log::Comment(L"Find next tab from end.");
{
cursor.SetXPosition(30);
auto coordCursorExpected = cursor.GetPosition();
coordCursorExpected.x = inputData.back();
stateMachine.ProcessString(nextReverseTab);
const auto coordCursorResult = cursor.GetPosition();
VERIFY_ARE_EQUAL(coordCursorExpected,
coordCursorResult,
L"Cursor adjusted to last item in the sample list from position beyond end.");
}
}
void ScreenBufferTests::TestAltBufferTabStops()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
gci.LockConsole(); // Lock must be taken to swap buffers.
auto unlock = wil::scope_exit([&] { gci.UnlockConsole(); });
auto& mainBuffer = gci.GetActiveOutputBuffer();
// Make sure we're in VT mode
WI_SetFlag(mainBuffer.OutputMode, ENABLE_VIRTUAL_TERMINAL_PROCESSING);
VERIFY_IS_TRUE(WI_IsFlagSet(mainBuffer.OutputMode, ENABLE_VIRTUAL_TERMINAL_PROCESSING));
Log::Comment(L"Add an initial set of tab in the main buffer.");
std::list<til::CoordType> expectedStops = { 3, 5, 6, 10, 15, 17 };
_SetTabStops(mainBuffer, expectedStops, true);
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(mainBuffer));
VERIFY_SUCCEEDED(mainBuffer.UseAlternateScreenBuffer({}));
auto& altBuffer = gci.GetActiveOutputBuffer();
auto useMain = wil::scope_exit([&] { altBuffer.UseMainScreenBuffer(); });
Log::Comment(NoThrowString().Format(
L"Manually enable VT mode for the alt buffer - "
L"usually the ctor will pick this up from GCI, but not in the tests."));
WI_SetFlag(altBuffer.OutputMode, ENABLE_VIRTUAL_TERMINAL_PROCESSING);
VERIFY_IS_TRUE(WI_IsFlagSet(altBuffer.OutputMode, ENABLE_VIRTUAL_TERMINAL_PROCESSING));
Log::Comment(L"Make sure the tabs are still set in the alt buffer.");
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(altBuffer));
Log::Comment(L"Add a new set of tabs in the alt buffer.");
expectedStops = { 4, 8, 12, 16 };
_SetTabStops(altBuffer, expectedStops, true);
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(altBuffer));
Log::Comment(L"Make sure the tabs are still set in the main buffer.");
useMain.release();
altBuffer.UseMainScreenBuffer();
VERIFY_ARE_EQUAL(expectedStops, _GetTabStops(mainBuffer));
}
void ScreenBufferTests::EraseAllTests()
{
auto& gci = ServiceLocator::LocateGlobals().getConsoleInformation();
auto& si = gci.GetActiveOutputBuffer();
auto& stateMachine = si.GetStateMachine();
auto& cursor = si._textBuffer->GetCursor();
const auto eraseAll = L"\033[2J";
VERIFY_ARE_EQUAL(si.GetViewport().Top(), 0);
////////////////////////////////////////////////////////////////////////
Log::Comment(L"Case 1: Erase a single line of text in the buffer\n");
stateMachine.ProcessString(L"foo");
til::point originalRelativePosition = { 3, 0 };
VERIFY_ARE_EQUAL(si.GetViewport().Top(), 0);
VERIFY_ARE_EQUAL(cursor.GetPosition(), originalRelativePosition);
stateMachine.ProcessString(eraseAll);
auto viewport = si._viewport;
VERIFY_ARE_EQUAL(viewport.Top(), 1);
auto newRelativePos = originalRelativePosition;
viewport.ConvertFromOrigin(&newRelativePos);
VERIFY_ARE_EQUAL(cursor.GetPosition(), newRelativePos);
Log::Comment(NoThrowString().Format(
L"viewport={L:%d,T:%d,R:%d,B:%d}",
viewport.Left(),
viewport.Top(),
viewport.RightInclusive(),
viewport.BottomInclusive()));
////////////////////////////////////////////////////////////////////////
Log::Comment(L"Case 2: Erase multiple lines, below the top of the buffer\n");
stateMachine.ProcessString(L"bar\nbar\nbar");
viewport = si._viewport;
originalRelativePosition = cursor.GetPosition();
viewport.ConvertToOrigin(&originalRelativePosition);
VERIFY_ARE_EQUAL(viewport.Top(), 1);
Log::Comment(NoThrowString().Format(
L"viewport={L:%d,T:%d,R:%d,B:%d}",
viewport.Left(),
viewport.Top(),
viewport.RightInclusive(),
viewport.BottomInclusive()));
stateMachine.ProcessString(eraseAll);
viewport = si._viewport;
VERIFY_ARE_EQUAL(viewport.Top(), 4);
newRelativePos = originalRelativePosition;
viewport.ConvertFromOrigin(&newRelativePos);
VERIFY_ARE_EQUAL(cursor.GetPosition(), newRelativePos);
Log::Comment(NoThrowString().Format(
L"viewport={L:%d,T:%d,R:%d,B:%d}",
viewport.Left(),
viewport.Top(),