102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT license.
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#include "precomp.h"
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#include "WexTestClass.h"
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#include "../../inc/consoletaeftemplates.hpp"
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#include "CommonState.hpp"
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#include "../types/inc/CodepointWidthDetector.hpp"
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using namespace WEX::Logging;
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static constexpr std::wstring_view emoji = L"\xD83E\xDD22"; // U+1F922 nauseated face
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static constexpr std::wstring_view ambiguous = L"\x414"; // U+0414 cyrillic capital de
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// codepoint and utf16 encoded string
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static const std::vector<std::tuple<unsigned int, std::wstring, CodepointWidth>> testData = {
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{ 0x7, L"\a", CodepointWidth::Narrow }, // BEL
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{ 0x20, L" ", CodepointWidth::Narrow },
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{ 0x39, L"9", CodepointWidth::Narrow },
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{ 0x414, L"\x414", CodepointWidth::Ambiguous }, // U+0414 cyrillic capital de
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{ 0x1104, L"\x1104", CodepointWidth::Wide }, // U+1104 hangul choseong ssangtikeut
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{ 0x306A, L"\x306A", CodepointWidth::Wide }, // U+306A hiragana na
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{ 0x30CA, L"\x30CA", CodepointWidth::Wide }, // U+30CA katakana na
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{ 0x72D7, L"\x72D7", CodepointWidth::Wide }, // U+72D7
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{ 0x1F47E, L"\xD83D\xDC7E", CodepointWidth::Wide }, // U+1F47E alien monster
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{ 0x1F51C, L"\xD83D\xDD1C", CodepointWidth::Wide } // U+1F51C SOON
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};
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class CodepointWidthDetectorTests
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{
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TEST_CLASS(CodepointWidthDetectorTests);
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TEST_METHOD(CanLookUpEmoji)
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{
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CodepointWidthDetector widthDetector;
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VERIFY_IS_TRUE(widthDetector.IsWide(emoji));
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}
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TEST_METHOD(CanExtractCodepoint)
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{
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CodepointWidthDetector widthDetector;
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for (const auto& data : testData)
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{
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const auto& expected = std::get<0>(data);
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const auto& wstr = std::get<1>(data);
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const auto result = widthDetector._extractCodepoint({ wstr.c_str(), wstr.size() });
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VERIFY_ARE_EQUAL(result, expected);
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}
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}
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TEST_METHOD(CanGetWidths)
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{
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CodepointWidthDetector widthDetector;
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for (const auto& data : testData)
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{
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const auto& expected = std::get<2>(data);
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const auto& wstr = std::get<1>(data);
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const auto result = widthDetector.GetWidth({ wstr.c_str(), wstr.size() });
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VERIFY_ARE_EQUAL(result, expected);
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}
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}
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static bool FallbackMethod(const std::wstring_view glyph)
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{
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if (glyph.size() < 1)
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{
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return false;
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}
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else
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{
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return (glyph.at(0) % 2) == 1;
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}
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}
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TEST_METHOD(AmbiguousCache)
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{
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// Set up a detector with fallback.
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CodepointWidthDetector widthDetector;
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widthDetector.SetFallbackMethod(std::bind(&FallbackMethod, std::placeholders::_1));
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// Ensure fallback cache is empty.
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VERIFY_ARE_EQUAL(0u, widthDetector._fallbackCache.size());
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// Lookup ambiguous width character.
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widthDetector.IsWide(ambiguous);
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// Cache should hold it.
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VERIFY_ARE_EQUAL(1u, widthDetector._fallbackCache.size());
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// Cached item should match what we expect
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const auto it = widthDetector._fallbackCache.begin();
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VERIFY_ARE_EQUAL(ambiguous, it->first);
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VERIFY_ARE_EQUAL(FallbackMethod(ambiguous), it->second);
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// Cache should empty when font changes.
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widthDetector.NotifyFontChanged();
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VERIFY_ARE_EQUAL(0u, widthDetector._fallbackCache.size());
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}
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};
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