tests/FontMgrAndroidParserTest.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "Resources.h"
 #include "SkCanvas.h"
 #include "SkCommandLineFlags.h"
 #include "SkFixed.h"
 #include "SkFontMgr_android.h"
 #include "SkFontMgr_android_parser.h"
 #include "SkOSFile.h"
 #include "SkTypeface.h"
 #include "Test.h"

 #include <cmath>
 #include <cstdio>

 DECLARE_bool(verboseFontMgr);

 int CountFallbacks(SkTDArray<FontFamily*> fontFamilies) {
     int countOfFallbackFonts = 0;
     for (int i = 0; i < fontFamilies.count(); i++) {
         if (fontFamilies[i]->fIsFallbackFont) {
             countOfFallbackFonts++;
         }
     }
     return countOfFallbackFonts;
 }

 //https://tools.ietf.org/html/rfc5234#appendix-B.1
 static bool isALPHA(int c) {
     return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
 }

 //https://tools.ietf.org/html/rfc5234#appendix-B.1
 static bool isDIGIT(int c) {
     return ('0' <= c && c <= '9');
 }

 void ValidateLoadedFonts(SkTDArray<FontFamily*> fontFamilies, const char* firstExpectedFile,
                          skiatest::Reporter* reporter) {
     REPORTER_ASSERT(reporter, fontFamilies[0]->fNames.count() == 5);
     REPORTER_ASSERT(reporter, !strcmp(fontFamilies[0]->fNames[0].c_str(), "sans-serif"));
     REPORTER_ASSERT(reporter,
                     !strcmp(fontFamilies[0]->fFonts[0].fFileName.c_str(), firstExpectedFile));
     REPORTER_ASSERT(reporter, !fontFamilies[0]->fIsFallbackFont);

     // Check that the languages are all sane.
     for (const auto& fontFamily : fontFamilies) {
         for (const auto& lang : fontFamily->fLanguages) {
             const SkString& langString = lang.getTag();
             for (size_t i = 0; i < langString.size(); ++i) {
                 int c = langString[i];
                 REPORTER_ASSERT(reporter, isALPHA(c) || isDIGIT(c) || '-' == c);
             }
         }
     }

     // All file names in the test configuration files start with a capital letter.
     // This is not a general requirement, but it is true of all the test configuration data.
     // Verifying ensures the filenames have been read sanely and have not been 'sliced'.
     for (int i = 0; i < fontFamilies.count(); ++i) {
         FontFamily& family = *fontFamilies[i];
         for (int j = 0; j < family.fFonts.count(); ++j) {
             FontFileInfo& file = family.fFonts[j];
             REPORTER_ASSERT(reporter, !file.fFileName.isEmpty() &&
                                       file.fFileName[0] >= 'A' &&
                                       file.fFileName[0] <= 'Z');
         }
     }
 }

 void DumpLoadedFonts(SkTDArray<FontFamily*> fontFamilies, const char* label) {
     if (!FLAGS_verboseFontMgr) {
         return;
     }

     SkDebugf("\n--- Dumping %s\n", label);
     for (int i = 0; i < fontFamilies.count(); ++i) {
         SkDebugf("Family %d:\n", i);
         switch(fontFamilies[i]->fVariant) {
             case kElegant_FontVariant: SkDebugf("  elegant\n"); break;
             case kCompact_FontVariant: SkDebugf("  compact\n"); break;
             default: break;
         }
         SkDebugf("  basePath %s\n", fontFamilies[i]->fBasePath.c_str());
         if (!fontFamilies[i]->fLanguages.empty()) {
             SkDebugf("  language");
             for (const auto& lang : fontFamilies[i]->fLanguages) {
                 SkDebugf(" %s", lang.getTag().c_str());
             }
             SkDebugf("\n");
         }
         for (int j = 0; j < fontFamilies[i]->fNames.count(); ++j) {
             SkDebugf("  name %s\n", fontFamilies[i]->fNames[j].c_str());
         }
         for (int j = 0; j < fontFamilies[i]->fFonts.count(); ++j) {
             const FontFileInfo& ffi = fontFamilies[i]->fFonts[j];
             SkDebugf("  file (%d) %s#%d", ffi.fWeight, ffi.fFileName.c_str(), ffi.fIndex);
             for (const auto& coordinate : ffi.fVariationDesignPosition) {
                 SkDebugf(" @'%c%c%c%c'=%f",
                          (coordinate.axis >> 24) & 0xFF,
                          (coordinate.axis >> 16) & 0xFF,
                          (coordinate.axis >>  8) & 0xFF,
                          (coordinate.axis      ) & 0xFF,
                          coordinate.value);
             }
             SkDebugf("\n");
         }
     }
     SkDebugf("\n\n");
 }

 template <int N, typename T> static double test_parse_fixed_r(skiatest::Reporter* reporter,
                                                               double low, double high, double inc)
 {
     double SK_FixedMax_double = nextafter(1 << (sizeof(T) * CHAR_BIT - N - 1), 0.0);
     double SK_FixedEpsilon_double = (1.0 / (1 << N));
     double maxError = 0;
     char buffer[64];
     for (double f = low; f < high; f += inc) {
         SkString s;
         // 'sprintf' formatting as expected depends on the current locale being "C".
         // We currently expect tests and tools to run in the "C" locale.
         sprintf(buffer, "%.20f", f);
         T fix;
         bool b = parse_fixed<N>(buffer, &fix);
         if (b) {
             double f2 = fix * SK_FixedEpsilon_double;
             double error = fabs(f - f2);
             REPORTER_ASSERT(reporter,  error <= SK_FixedEpsilon_double);
             maxError = SkTMax(maxError, error);
         } else {
             REPORTER_ASSERT(reporter, f < -SK_FixedMax_double || SK_FixedMax_double < f);
         }
     }

     //SkDebugf("maxError: %.20f\n", maxError);
     return maxError;
 }

 static void test_parse_fixed(skiatest::Reporter* reporter) {
     test_parse_fixed_r<27, int32_t>(reporter, -8.1, -7.9, 0.000001);
     test_parse_fixed_r<27, int32_t>(reporter, -0.1, 0.1, 0.000001);
     test_parse_fixed_r<27, int32_t>(reporter, 7.9, 8.1, 0.000001);
     test_parse_fixed_r<16, int32_t>(reporter, -0.125, 0.125, 1.0 / (1 << 19));
     test_parse_fixed_r<16, int32_t>(reporter, -32768.125, -32766.875, 1.0 / (1 << 17));
     test_parse_fixed_r<16, int32_t>(reporter, 32766.875, 32768.125, 1.0 / (1 << 17));
     test_parse_fixed_r<16, int32_t>(reporter, -1.1, 1.1, 0.0001);

     SkFixed fix;
     REPORTER_ASSERT(reporter, !parse_fixed<27>("-17.1", &fix));
     REPORTER_ASSERT(reporter, !parse_fixed<16>("32768", &fix));
     REPORTER_ASSERT(reporter, !parse_fixed<16>("", &fix));
     REPORTER_ASSERT(reporter, !parse_fixed<16>(".", &fix));
     REPORTER_ASSERT(reporter, !parse_fixed<16>("123.", &fix));
     REPORTER_ASSERT(reporter, !parse_fixed<16>("a", &fix));
     REPORTER_ASSERT(reporter, !parse_fixed<16>(".123a", &fix));
 }

 DEF_TEST(FontMgrAndroidParser, reporter) {
     test_parse_fixed(reporter);

     bool resourcesMissing = false;

     SkTDArray<FontFamily*> preV17FontFamilies;
     SkFontMgr_Android_Parser::GetCustomFontFamilies(preV17FontFamilies,
         SkString("/custom/font/path/"),
         GetResourcePath("android_fonts/pre_v17/system_fonts.xml").c_str(),
         GetResourcePath("android_fonts/pre_v17/fallback_fonts.xml").c_str());

     if (preV17FontFamilies.count() > 0) {
         REPORTER_ASSERT(reporter, preV17FontFamilies.count() == 14);
         REPORTER_ASSERT(reporter, CountFallbacks(preV17FontFamilies) == 10);

         DumpLoadedFonts(preV17FontFamilies, "pre version 17");
         ValidateLoadedFonts(preV17FontFamilies, "Roboto-Regular.ttf", reporter);
     } else {
         resourcesMissing = true;
     }
     preV17FontFamilies.deleteAll();


     SkTDArray<FontFamily*> v17FontFamilies;
     SkFontMgr_Android_Parser::GetCustomFontFamilies(v17FontFamilies,
         SkString("/custom/font/path/"),
         GetResourcePath("android_fonts/v17/system_fonts.xml").c_str(),
         GetResourcePath("android_fonts/v17/fallback_fonts.xml").c_str(),
         GetResourcePath("android_fonts/v17").c_str());

     if (v17FontFamilies.count() > 0) {
         REPORTER_ASSERT(reporter, v17FontFamilies.count() == 56);
         REPORTER_ASSERT(reporter, CountFallbacks(v17FontFamilies) == 46);

         DumpLoadedFonts(v17FontFamilies, "version 17");
         ValidateLoadedFonts(v17FontFamilies, "Roboto-Regular.ttf", reporter);
     } else {
         resourcesMissing = true;
     }
     v17FontFamilies.deleteAll();


     SkTDArray<FontFamily*> v22FontFamilies;
     SkFontMgr_Android_Parser::GetCustomFontFamilies(v22FontFamilies,
         SkString("/custom/font/path/"),
         GetResourcePath("android_fonts/v22/fonts.xml").c_str(),
         nullptr);

     if (v22FontFamilies.count() > 0) {
         REPORTER_ASSERT(reporter, v22FontFamilies.count() == 54);
         REPORTER_ASSERT(reporter, CountFallbacks(v22FontFamilies) == 42);

         DumpLoadedFonts(v22FontFamilies, "version 22");
         ValidateLoadedFonts(v22FontFamilies, "Roboto-Thin.ttf", reporter);
     } else {
         resourcesMissing = true;
     }
     v22FontFamilies.deleteAll();

     if (resourcesMissing) {
         SkDebugf("---- Resource files missing for FontConfigParser test\n");
     }
 }

 DEF_TEST(FontMgrAndroidLegacyMakeTypeface, reporter) {
     constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
     SkString basePath = GetResourcePath("fonts/");
     SkString fontsXml = GetResourcePath(fontsXmlFilename);

     if (!sk_exists(fontsXml.c_str())) {
         ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
         return;
     }

     SkFontMgr_Android_CustomFonts custom;
     custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
     custom.fBasePath = basePath.c_str();
     custom.fFontsXml = fontsXml.c_str();
     custom.fFallbackFontsXml = nullptr;
     custom.fIsolated = false;

     sk_sp<SkFontMgr> fm(SkFontMgr_New_Android(&custom));
     sk_sp<SkTypeface> t(fm->legacyMakeTypeface("non-existent-font", SkFontStyle()));
     REPORTER_ASSERT(reporter, nullptr == t);
 }

 static bool bitmap_compare(const SkBitmap& ref, const SkBitmap& test) {
     for (int y = 0; y < test.height(); ++y) {
         for (int x = 0; x < test.width(); ++x) {
             SkColor testColor = test.getColor(x, y);
             SkColor refColor = ref.getColor(x, y);
             if (refColor != testColor) {
                 return false;
             }
         }
     }
     return true;
 }

 DEF_TEST(FontMgrAndroidSystemVariableTypeface, reporter) {
     constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
     SkString basePath = GetResourcePath("fonts/");
     SkString fontsXml = GetResourcePath(fontsXmlFilename);

     if (!sk_exists(fontsXml.c_str())) {
         ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
         return;
     }

     SkFontMgr_Android_CustomFonts custom;
     custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
     custom.fBasePath = basePath.c_str();
     custom.fFontsXml = fontsXml.c_str();
     custom.fFallbackFontsXml = nullptr;
     custom.fIsolated = false;

     sk_sp<SkFontMgr> fontMgr(SkFontMgr_New_Android(&custom));
     // "sans-serif" in "fonts/fonts.xml" is "fonts/Distortable.ttf"
     sk_sp<SkTypeface> typeface(fontMgr->legacyMakeTypeface("sans-serif", SkFontStyle()));

     SkBitmap bitmapStream;
     bitmapStream.allocN32Pixels(64, 64);
     SkCanvas canvasStream(bitmapStream);
     canvasStream.drawColor(SK_ColorWHITE);

     SkBitmap bitmapClone;
     bitmapClone.allocN32Pixels(64, 64);
     SkCanvas canvasClone(bitmapClone);
     canvasStream.drawColor(SK_ColorWHITE);

     SkPaint paintStream;
     paintStream.setColor(SK_ColorGRAY);
     paintStream.setTextSize(SkIntToScalar(20));
     paintStream.setAntiAlias(true);
     paintStream.setLCDRenderText(true);

     SkPaint paintClone;
     paintClone.setColor(SK_ColorGRAY);
     paintClone.setTextSize(SkIntToScalar(20));
     paintClone.setAntiAlias(true);
     paintClone.setLCDRenderText(true);

     std::unique_ptr<SkStreamAsset> distortableStream(
         GetResourceAsStream("fonts/Distortable.ttf"));
     if (!distortableStream) {
         return;
     }

     const char* text = "abc";
     const size_t textLen = strlen(text);
     SkPoint point = SkPoint::Make(20.0f, 20.0f);
     SkFourByteTag tag = SkSetFourByteTag('w', 'g', 'h', 't');

     for (int i = 0; i < 10; ++i) {
         SkScalar styleValue =
             SkDoubleToScalar(0.5 + i * ((2.0 - 0.5) / 10));
         SkFontArguments::VariationPosition::Coordinate
             coordinates[] = {{tag, styleValue}};
         SkFontArguments::VariationPosition
             position = {coordinates, SK_ARRAY_COUNT(coordinates)};

         paintStream.setTypeface(sk_sp<SkTypeface>(
             fontMgr->makeFromStream(distortableStream->duplicate(),
                                     SkFontArguments().setVariationDesignPosition(position))));

         paintClone.setTypeface(sk_sp<SkTypeface>(
             typeface->makeClone(SkFontArguments().setVariationDesignPosition(position))));

         canvasStream.drawColor(SK_ColorWHITE);
         canvasStream.drawText(text, textLen, point.fX, point.fY, paintStream);

         canvasClone.drawColor(SK_ColorWHITE);
         canvasClone.drawText(text, textLen, point.fX, point.fY, paintClone);

         bool success = bitmap_compare(bitmapStream, bitmapClone);
         REPORTER_ASSERT(reporter, success);
     }
 }
	/*
	* Copyright 2014 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "Resources.h"
	#include "SkCanvas.h"
	#include "SkCommandLineFlags.h"
	#include "SkFixed.h"
	#include "SkFontMgr_android.h"
	#include "SkFontMgr_android_parser.h"
	#include "SkOSFile.h"
	#include "SkTypeface.h"
	#include "Test.h"

	#include <cmath>
	#include <cstdio>

	DECLARE_bool(verboseFontMgr);

	int CountFallbacks(SkTDArray<FontFamily*> fontFamilies) {
	int countOfFallbackFonts = 0;
	for (int i = 0; i < fontFamilies.count(); i++) {
	if (fontFamilies[i]->fIsFallbackFont) {
	countOfFallbackFonts++;
	}
	}
	return countOfFallbackFonts;
	}

	//https://tools.ietf.org/html/rfc5234#appendix-B.1
	static bool isALPHA(int c) {
	return ('a' <= c && c <= 'z') \|\| ('A' <= c && c <= 'Z');
	}

	//https://tools.ietf.org/html/rfc5234#appendix-B.1
	static bool isDIGIT(int c) {
	return ('0' <= c && c <= '9');
	}

	void ValidateLoadedFonts(SkTDArray<FontFamily> fontFamilies, const char firstExpectedFile,
	skiatest::Reporter* reporter) {
	REPORTER_ASSERT(reporter, fontFamilies[0]->fNames.count() == 5);
	REPORTER_ASSERT(reporter, !strcmp(fontFamilies[0]->fNames[0].c_str(), "sans-serif"));
	REPORTER_ASSERT(reporter,
	!strcmp(fontFamilies[0]->fFonts[0].fFileName.c_str(), firstExpectedFile));
	REPORTER_ASSERT(reporter, !fontFamilies[0]->fIsFallbackFont);

	// Check that the languages are all sane.
	for (const auto& fontFamily : fontFamilies) {
	for (const auto& lang : fontFamily->fLanguages) {
	const SkString& langString = lang.getTag();
	for (size_t i = 0; i < langString.size(); ++i) {
	int c = langString[i];
	REPORTER_ASSERT(reporter, isALPHA(c) \|\| isDIGIT(c) \|\| '-' == c);
	}
	}
	}

	// All file names in the test configuration files start with a capital letter.
	// This is not a general requirement, but it is true of all the test configuration data.
	// Verifying ensures the filenames have been read sanely and have not been 'sliced'.
	for (int i = 0; i < fontFamilies.count(); ++i) {
	FontFamily& family = *fontFamilies[i];
	for (int j = 0; j < family.fFonts.count(); ++j) {
	FontFileInfo& file = family.fFonts[j];
	REPORTER_ASSERT(reporter, !file.fFileName.isEmpty() &&
	file.fFileName[0] >= 'A' &&
	file.fFileName[0] <= 'Z');
	}
	}
	}

	void DumpLoadedFonts(SkTDArray<FontFamily> fontFamilies, const char label) {
	if (!FLAGS_verboseFontMgr) {
	return;
	}

	SkDebugf("\n--- Dumping %s\n", label);
	for (int i = 0; i < fontFamilies.count(); ++i) {
	SkDebugf("Family %d:\n", i);
	switch(fontFamilies[i]->fVariant) {
	case kElegant_FontVariant: SkDebugf(" elegant\n"); break;
	case kCompact_FontVariant: SkDebugf(" compact\n"); break;
	default: break;
	}
	SkDebugf(" basePath %s\n", fontFamilies[i]->fBasePath.c_str());
	if (!fontFamilies[i]->fLanguages.empty()) {
	SkDebugf(" language");
	for (const auto& lang : fontFamilies[i]->fLanguages) {
	SkDebugf(" %s", lang.getTag().c_str());
	}
	SkDebugf("\n");
	}
	for (int j = 0; j < fontFamilies[i]->fNames.count(); ++j) {
	SkDebugf(" name %s\n", fontFamilies[i]->fNames[j].c_str());
	}
	for (int j = 0; j < fontFamilies[i]->fFonts.count(); ++j) {
	const FontFileInfo& ffi = fontFamilies[i]->fFonts[j];
	SkDebugf(" file (%d) %s#%d", ffi.fWeight, ffi.fFileName.c_str(), ffi.fIndex);
	for (const auto& coordinate : ffi.fVariationDesignPosition) {
	SkDebugf(" @'%c%c%c%c'=%f",
	(coordinate.axis >> 24) & 0xFF,
	(coordinate.axis >> 16) & 0xFF,
	(coordinate.axis >> 8) & 0xFF,
	(coordinate.axis ) & 0xFF,
	coordinate.value);
	}
	SkDebugf("\n");
	}
	}
	SkDebugf("\n\n");
	}

	template <int N, typename T> static double test_parse_fixed_r(skiatest::Reporter* reporter,
	double low, double high, double inc)
	{
	double SK_FixedMax_double = nextafter(1 << (sizeof(T) * CHAR_BIT - N - 1), 0.0);
	double SK_FixedEpsilon_double = (1.0 / (1 << N));
	double maxError = 0;
	char buffer[64];
	for (double f = low; f < high; f += inc) {
	SkString s;
	// 'sprintf' formatting as expected depends on the current locale being "C".
	// We currently expect tests and tools to run in the "C" locale.
	sprintf(buffer, "%.20f", f);
	T fix;
	bool b = parse_fixed<N>(buffer, &fix);
	if (b) {
	double f2 = fix * SK_FixedEpsilon_double;
	double error = fabs(f - f2);
	REPORTER_ASSERT(reporter, error <= SK_FixedEpsilon_double);
	maxError = SkTMax(maxError, error);
	} else {
	REPORTER_ASSERT(reporter, f < -SK_FixedMax_double \|\| SK_FixedMax_double < f);
	}
	}

	//SkDebugf("maxError: %.20f\n", maxError);
	return maxError;
	}

	static void test_parse_fixed(skiatest::Reporter* reporter) {
	test_parse_fixed_r<27, int32_t>(reporter, -8.1, -7.9, 0.000001);
	test_parse_fixed_r<27, int32_t>(reporter, -0.1, 0.1, 0.000001);
	test_parse_fixed_r<27, int32_t>(reporter, 7.9, 8.1, 0.000001);
	test_parse_fixed_r<16, int32_t>(reporter, -0.125, 0.125, 1.0 / (1 << 19));
	test_parse_fixed_r<16, int32_t>(reporter, -32768.125, -32766.875, 1.0 / (1 << 17));
	test_parse_fixed_r<16, int32_t>(reporter, 32766.875, 32768.125, 1.0 / (1 << 17));
	test_parse_fixed_r<16, int32_t>(reporter, -1.1, 1.1, 0.0001);

	SkFixed fix;
	REPORTER_ASSERT(reporter, !parse_fixed<27>("-17.1", &fix));
	REPORTER_ASSERT(reporter, !parse_fixed<16>("32768", &fix));
	REPORTER_ASSERT(reporter, !parse_fixed<16>("", &fix));
	REPORTER_ASSERT(reporter, !parse_fixed<16>(".", &fix));
	REPORTER_ASSERT(reporter, !parse_fixed<16>("123.", &fix));
	REPORTER_ASSERT(reporter, !parse_fixed<16>("a", &fix));
	REPORTER_ASSERT(reporter, !parse_fixed<16>(".123a", &fix));
	}

	DEF_TEST(FontMgrAndroidParser, reporter) {
	test_parse_fixed(reporter);

	bool resourcesMissing = false;

	SkTDArray<FontFamily*> preV17FontFamilies;
	SkFontMgr_Android_Parser::GetCustomFontFamilies(preV17FontFamilies,
	SkString("/custom/font/path/"),
	GetResourcePath("android_fonts/pre_v17/system_fonts.xml").c_str(),
	GetResourcePath("android_fonts/pre_v17/fallback_fonts.xml").c_str());

	if (preV17FontFamilies.count() > 0) {
	REPORTER_ASSERT(reporter, preV17FontFamilies.count() == 14);
	REPORTER_ASSERT(reporter, CountFallbacks(preV17FontFamilies) == 10);

	DumpLoadedFonts(preV17FontFamilies, "pre version 17");
	ValidateLoadedFonts(preV17FontFamilies, "Roboto-Regular.ttf", reporter);
	} else {
	resourcesMissing = true;
	}
	preV17FontFamilies.deleteAll();


	SkTDArray<FontFamily*> v17FontFamilies;
	SkFontMgr_Android_Parser::GetCustomFontFamilies(v17FontFamilies,
	SkString("/custom/font/path/"),
	GetResourcePath("android_fonts/v17/system_fonts.xml").c_str(),
	GetResourcePath("android_fonts/v17/fallback_fonts.xml").c_str(),
	GetResourcePath("android_fonts/v17").c_str());

	if (v17FontFamilies.count() > 0) {
	REPORTER_ASSERT(reporter, v17FontFamilies.count() == 56);
	REPORTER_ASSERT(reporter, CountFallbacks(v17FontFamilies) == 46);

	DumpLoadedFonts(v17FontFamilies, "version 17");
	ValidateLoadedFonts(v17FontFamilies, "Roboto-Regular.ttf", reporter);
	} else {
	resourcesMissing = true;
	}
	v17FontFamilies.deleteAll();


	SkTDArray<FontFamily*> v22FontFamilies;
	SkFontMgr_Android_Parser::GetCustomFontFamilies(v22FontFamilies,
	SkString("/custom/font/path/"),
	GetResourcePath("android_fonts/v22/fonts.xml").c_str(),
	nullptr);

	if (v22FontFamilies.count() > 0) {
	REPORTER_ASSERT(reporter, v22FontFamilies.count() == 54);
	REPORTER_ASSERT(reporter, CountFallbacks(v22FontFamilies) == 42);

	DumpLoadedFonts(v22FontFamilies, "version 22");
	ValidateLoadedFonts(v22FontFamilies, "Roboto-Thin.ttf", reporter);
	} else {
	resourcesMissing = true;
	}
	v22FontFamilies.deleteAll();

	if (resourcesMissing) {
	SkDebugf("---- Resource files missing for FontConfigParser test\n");
	}
	}

	DEF_TEST(FontMgrAndroidLegacyMakeTypeface, reporter) {
	constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
	SkString basePath = GetResourcePath("fonts/");
	SkString fontsXml = GetResourcePath(fontsXmlFilename);

	if (!sk_exists(fontsXml.c_str())) {
	ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
	return;
	}

	SkFontMgr_Android_CustomFonts custom;
	custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
	custom.fBasePath = basePath.c_str();
	custom.fFontsXml = fontsXml.c_str();
	custom.fFallbackFontsXml = nullptr;
	custom.fIsolated = false;

	sk_sp<SkFontMgr> fm(SkFontMgr_New_Android(&custom));
	sk_sp<SkTypeface> t(fm->legacyMakeTypeface("non-existent-font", SkFontStyle()));
	REPORTER_ASSERT(reporter, nullptr == t);
	}

	static bool bitmap_compare(const SkBitmap& ref, const SkBitmap& test) {
	for (int y = 0; y < test.height(); ++y) {
	for (int x = 0; x < test.width(); ++x) {
	SkColor testColor = test.getColor(x, y);
	SkColor refColor = ref.getColor(x, y);
	if (refColor != testColor) {
	return false;
	}
	}
	}
	return true;
	}

	DEF_TEST(FontMgrAndroidSystemVariableTypeface, reporter) {
	constexpr char fontsXmlFilename[] = "fonts/fonts.xml";
	SkString basePath = GetResourcePath("fonts/");
	SkString fontsXml = GetResourcePath(fontsXmlFilename);

	if (!sk_exists(fontsXml.c_str())) {
	ERRORF(reporter, "file missing: %s\n", fontsXmlFilename);
	return;
	}

	SkFontMgr_Android_CustomFonts custom;
	custom.fSystemFontUse = SkFontMgr_Android_CustomFonts::kOnlyCustom;
	custom.fBasePath = basePath.c_str();
	custom.fFontsXml = fontsXml.c_str();
	custom.fFallbackFontsXml = nullptr;
	custom.fIsolated = false;

	sk_sp<SkFontMgr> fontMgr(SkFontMgr_New_Android(&custom));
	// "sans-serif" in "fonts/fonts.xml" is "fonts/Distortable.ttf"
	sk_sp<SkTypeface> typeface(fontMgr->legacyMakeTypeface("sans-serif", SkFontStyle()));

	SkBitmap bitmapStream;
	bitmapStream.allocN32Pixels(64, 64);
	SkCanvas canvasStream(bitmapStream);
	canvasStream.drawColor(SK_ColorWHITE);

	SkBitmap bitmapClone;
	bitmapClone.allocN32Pixels(64, 64);
	SkCanvas canvasClone(bitmapClone);
	canvasStream.drawColor(SK_ColorWHITE);

	SkPaint paintStream;
	paintStream.setColor(SK_ColorGRAY);
	paintStream.setTextSize(SkIntToScalar(20));
	paintStream.setAntiAlias(true);
	paintStream.setLCDRenderText(true);

	SkPaint paintClone;
	paintClone.setColor(SK_ColorGRAY);
	paintClone.setTextSize(SkIntToScalar(20));
	paintClone.setAntiAlias(true);
	paintClone.setLCDRenderText(true);

	std::unique_ptr<SkStreamAsset> distortableStream(
	GetResourceAsStream("fonts/Distortable.ttf"));
	if (!distortableStream) {
	return;
	}

	const char* text = "abc";
	const size_t textLen = strlen(text);
	SkPoint point = SkPoint::Make(20.0f, 20.0f);
	SkFourByteTag tag = SkSetFourByteTag('w', 'g', 'h', 't');

	for (int i = 0; i < 10; ++i) {
	SkScalar styleValue =
	SkDoubleToScalar(0.5 + i * ((2.0 - 0.5) / 10));
	SkFontArguments::VariationPosition::Coordinate
	coordinates[] = {{tag, styleValue}};
	SkFontArguments::VariationPosition
	position = {coordinates, SK_ARRAY_COUNT(coordinates)};

	paintStream.setTypeface(sk_sp<SkTypeface>(
	fontMgr->makeFromStream(distortableStream->duplicate(),
	SkFontArguments().setVariationDesignPosition(position))));

	paintClone.setTypeface(sk_sp<SkTypeface>(
	typeface->makeClone(SkFontArguments().setVariationDesignPosition(position))));

	canvasStream.drawColor(SK_ColorWHITE);
	canvasStream.drawText(text, textLen, point.fX, point.fY, paintStream);

	canvasClone.drawColor(SK_ColorWHITE);
	canvasClone.drawText(text, textLen, point.fX, point.fY, paintClone);

	bool success = bitmap_compare(bitmapStream, bitmapClone);
	REPORTER_ASSERT(reporter, success);
	}
	}