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133 lines
4.9 KiB
133 lines
4.9 KiB
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "minikin/FontFileParser.h"
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#include <gtest/gtest.h>
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#include "FontTestUtils.h"
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#include "FreeTypeMinikinFontForTest.h"
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#include "PathUtils.h"
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namespace minikin {
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namespace {
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static size_t writeU16(uint16_t x, uint8_t* out, size_t offset) {
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out[offset] = x >> 8;
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out[offset + 1] = x;
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return offset + 2;
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}
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static size_t writeU32(uint32_t x, uint8_t* out, size_t offset) {
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out[offset] = x >> 24;
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out[offset + 1] = x >> 16;
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out[offset + 2] = x >> 8;
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out[offset + 3] = x;
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return offset + 4;
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}
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class TestableFontFileParser : public FontFileParser {
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public:
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using FontFileParser::analyzeFontRevision;
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using FontFileParser::checkPSName;
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};
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// Returns valid head table contents.
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static std::vector<uint8_t> buildHeadTable(uint32_t fontRevision) {
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std::vector<uint8_t> out(46);
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size_t head = writeU16(1, out.data(), 0); // major version
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head = writeU16(0, out.data(), head); // minor version
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head = writeU32(fontRevision, out.data(), head); // fontRevision
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head = writeU32(0xB1B0AFBA, out.data(), head); // checksum. (random value)
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head = writeU32(0x5F0F3CF5, out.data(), head); // magicNumber
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head = writeU16(0, out.data(), head); // flasgs
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head = writeU16(1024, out.data(), head); // unitsPerEm
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head = writeU32(123457890, out.data(), head); // created (random value)
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head = writeU32(123457890, out.data(), head); // modified (random value)
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head = writeU16(0, out.data(), head); // xMin
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head = writeU16(100, out.data(), head); // yMin
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head = writeU16(1024, out.data(), head); // xMax
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head = writeU16(2048, out.data(), head); // yMax
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head = writeU16(0, out.data(), head); // macStyle
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head = writeU16(10, out.data(), head); // lowestRecPPEM
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head = writeU16(1, out.data(), head); // fontDirectionHint
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head = writeU16(1, out.data(), head); // indexToLocFormat
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head = writeU16(0, out.data(), head); // glyphDataFormat;
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return out;
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}
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TEST(FontFileParserTest, analyzeFontRevision) {
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uint32_t rev = 0x12345678;
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std::vector<uint8_t> head = buildHeadTable(rev);
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uint32_t out = 0;
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EXPECT_TRUE(TestableFontFileParser::analyzeFontRevision(head.data(), head.size(), &out));
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EXPECT_EQ(rev, out);
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}
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TEST(FontFileParserTest, headInvalidLength) {
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uint32_t rev = 0x12345678;
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std::vector<uint8_t> head = buildHeadTable(rev);
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uint32_t out = 0;
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EXPECT_FALSE(TestableFontFileParser::analyzeFontRevision(head.data(), 6, &out));
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}
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TEST(FontFileParserTest, parseFontForRev) {
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auto minikinFont = std::make_shared<FreeTypeMinikinFontForTest>(getTestFontPath("Ascii.ttf"));
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auto parser = FontFileParser(minikinFont->GetFontData(), minikinFont->GetFontSize(), 0);
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auto revision = parser.getFontRevision();
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EXPECT_TRUE(revision.has_value());
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EXPECT_EQ(0x00010000u, revision.value());
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}
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TEST(FontFileParser, checkPSName) {
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EXPECT_TRUE(TestableFontFileParser::checkPSName("Roboto-Regular"));
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EXPECT_TRUE(TestableFontFileParser::checkPSName("NotoColorEmoji"));
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// Space character is not allowed.
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EXPECT_FALSE(TestableFontFileParser::checkPSName("Roboto Regular"));
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EXPECT_FALSE(TestableFontFileParser::checkPSName("Noto Color Emoji"));
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// parens are not not allowed.
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EXPECT_FALSE(TestableFontFileParser::checkPSName("Roboto (Regular)"));
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EXPECT_FALSE(TestableFontFileParser::checkPSName("Noto <Color> {Emoji}"));
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// control characters are not allowed
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EXPECT_FALSE(TestableFontFileParser::checkPSName("Roboto-Regular\b"));
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EXPECT_FALSE(TestableFontFileParser::checkPSName("NotoColorEmoji\t"));
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// Up to 63 character is allowed.
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EXPECT_FALSE(TestableFontFileParser::checkPSName(std::string(64, 'a')));
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// Only printable ASCII is allowed.
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EXPECT_FALSE(TestableFontFileParser::checkPSName("ろぼとふぉんと"));
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}
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TEST(FontFileParserTest, parseFontForPSName) {
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auto minikinFont = std::make_shared<FreeTypeMinikinFontForTest>(getTestFontPath("Ascii.ttf"));
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auto parser = FontFileParser(minikinFont->GetFontData(), minikinFont->GetFontSize(), 0);
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auto psName = parser.getPostScriptName();
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EXPECT_TRUE(psName.has_value());
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EXPECT_EQ("SampleFont-Regular", psName.value());
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}
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} // namespace
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} // namespace minikin
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