godot/tests/scene/test_fontfile.h

/**************************************************************************/
/*  test_fontfile.h                                                       */
/**************************************************************************/
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#pragma once

#include "modules/modules_enabled.gen.h"

#include "scene/resources/font.h"
#include "tests/test_macros.h"

namespace TestFontfile {

TEST_CASE("[FontFile] Load Dynamic Font - getters") {
#ifdef MODULE_FREETYPE_ENABLED
	String test_dynamic_font = "thirdparty/fonts/NotoSansHebrew_Regular.woff2";
	Ref<FontFile> ff;
	ff.instantiate();
	CHECK(ff->load_dynamic_font(test_dynamic_font) == OK);

	// These properties come from the font file itself.
	CHECK(ff->get_font_name() == "Noto Sans Hebrew");
	CHECK(ff->get_font_style_name() == "Regular");
	CHECK(ff->get_font_weight() == 400);
	CHECK(ff->get_font_stretch() == 100);
	CHECK(ff->get_opentype_features() == Dictionary());

	Dictionary expected_ot_name_strings;
	Dictionary en_dict;
	en_dict["copyright"] = "Copyright 2022 The Noto Project Authors (https://github.com/notofonts/hebrew)";
	en_dict["family_name"] = "Noto Sans Hebrew";
	en_dict["subfamily_name"] = "Regular";
	en_dict["full_name"] = "Noto Sans Hebrew Regular";
	en_dict["unique_identifier"] = "2.003;GOOG;NotoSansHebrew-Regular";
	en_dict["version"] = "Version 2.003";
	en_dict["postscript_name"] = "NotoSansHebrew-Regular";
	en_dict["trademark"] = "Noto is a trademark of Google Inc.";
	en_dict["license"] = "This Font Software is licensed under the SIL Open Font License, Version 1.1. This license is available with a FAQ at: https://scripts.sil.org/OFL";
	en_dict["license_url"] = "https://scripts.sil.org/OFL";
	en_dict["designer"] = "Monotype Design Team";
	en_dict["designer_url"] = "http://www.monotype.com/studio";
	en_dict["description"] = "Designed by Monotype design team.";
	en_dict["manufacturer"] = "Monotype Imaging Inc.";
	en_dict["vendor_url"] = "http://www.google.com/get/noto/";
	expected_ot_name_strings["en"] = en_dict;
	CHECK(ff->get_ot_name_strings() == expected_ot_name_strings);

	// These are dependent on size and potentially other state. Act as regression tests based of arbitrary small size 10 and large size 100.
	CHECK(ff->get_height(10) == doctest::Approx((real_t)14));
	CHECK(ff->get_ascent(10) == doctest::Approx((real_t)11));
	CHECK(ff->get_descent(10) == doctest::Approx((real_t)3));
	CHECK(ff->get_underline_position(10) == doctest::Approx((real_t)1.25));
	CHECK(ff->get_underline_thickness(10) == doctest::Approx((real_t)0.5));
	CHECK(ff->get_height(100) == doctest::Approx((real_t)137));
	CHECK(ff->get_ascent(100) == doctest::Approx((real_t)107));
	CHECK(ff->get_descent(100) == doctest::Approx((real_t)30));
	CHECK(ff->get_underline_position(100) == doctest::Approx((real_t)12.5));
	CHECK(ff->get_underline_thickness(100) == doctest::Approx((real_t)5));
#endif
}

TEST_CASE("[FontFile] Create font file and check data") {
	// Create test instance.
	Ref<FontFile> font_file;
	font_file.instantiate();

#ifdef MODULE_FREETYPE_ENABLED
	// Try to load non-existent files.
	ERR_PRINT_OFF
	CHECK(font_file->load_dynamic_font("") == OK);
	CHECK_MESSAGE(font_file->get_data().is_empty() == true, "Invalid fontfile should not be loaded.");

	CHECK(font_file->load_dynamic_font("thirdparty/fonts/nofonthasthisname.woff2") == OK);
	CHECK_MESSAGE(font_file->get_data().is_empty() == true, "Invalid fontfile should not be loaded.");
	ERR_PRINT_ON

	// Load a valid file.
	CHECK(font_file->load_dynamic_font("thirdparty/fonts/Inter_Regular.woff2") == OK);

	// Check fontfile data.
	CHECK_MESSAGE(font_file->get_data().is_empty() == false, "Fontfile should have been loaded.");
	CHECK_MESSAGE(font_file->get_font_name() == "Inter", "Loaded correct font name.");
	CHECK_MESSAGE(font_file->get_font_style_name() == "Regular", "Loaded correct font style.");
	CHECK_MESSAGE(font_file->get_data().size() == 111268llu, "Whole fontfile was loaded.");

	// Valid glyphs.
	CHECK_MESSAGE(font_file->get_glyph_index(2, 'a', 0) != 0, "Glyph index for 'a' is valid.");
	CHECK_MESSAGE(font_file->get_glyph_index(2, 'b', 0) != 0, "Glyph index for 'b' is valid.");
	CHECK_MESSAGE(font_file->get_glyph_index(2, 0x0103, 0) != 0, "Glyph index for 'latin small letter a with breve' is valid.");
	CHECK_MESSAGE(font_file->get_glyph_index(2, 0x03a8, 0) != 0, "Glyph index for 'Greek psi' is valid.");
	CHECK_MESSAGE(font_file->get_glyph_index(2, 0x0416, 0) != 0, "Glyph index for 'Cyrillic zhe' is valid.");
	CHECK_MESSAGE(font_file->get_glyph_index(2, '&', 0) != 0, "Glyph index for '&' is valid.");

	// Invalid glyphs.
	CHECK_MESSAGE(font_file->get_glyph_index(2, 0x4416, 0) == 0, "Glyph index is invalid.");
	CHECK_MESSAGE(font_file->get_glyph_index(2, 0x5555, 0) == 0, "Glyph index is invalid.");
	CHECK_MESSAGE(font_file->get_glyph_index(2, 0x2901, 0) == 0, "Glyph index is invalid.");
#endif
}

} // namespace TestFontfile