Merge pull request godotengine#81503 from matorin57/font-tests

Add getter tests for dynamic fonts

Author: Repiteo

tests/scene/test_fontfile.h

@@ -38,6 +38,71 @@
 
 namespace TestFontfile {
 
+#ifdef MODULE_FREETYPE_ENABLED
+// Macro to generate tests for getters.
+#define GETTER_TEST(m_name, m_getter, m_default_value)                                                                                          \
+	TEST_CASE("[FontFile] Load Dynamic Font - get-set " m_name) {                                                                               \
+		String test_dynamic_font = "thirdparty/fonts/NotoSansHebrew_Regular.woff2";                                                             \
+		Ref<FontFile> ff;                                                                                                                       \
+		ff.instantiate();                                                                                                                       \
+		CHECK(ff->load_dynamic_font(test_dynamic_font) == OK);                                                                                  \
+		CHECK_MESSAGE(ff->m_getter == m_default_value, "Unexpected original value for ", m_name, " : ", ff->m_getter, " != ", m_default_value); \
+	}
+
+#define GETTER_TEST_REAL(m_name, m_getter, m_default_value)                                                                                                      \
+	TEST_CASE("[FontFile] Load Dynamic Font - get-set " m_name) {                                                                                                \
+		String test_dynamic_font = "thirdparty/fonts/NotoSansHebrew_Regular.woff2";                                                                              \
+		Ref<FontFile> ff;                                                                                                                                        \
+		ff.instantiate();                                                                                                                                        \
+		CHECK(ff->load_dynamic_font(test_dynamic_font) == OK);                                                                                                   \
+		CHECK_MESSAGE(ff->m_getter == doctest::Approx(m_default_value), "Unexpected original value for ", m_name, " : ", ff->m_getter, " != ", m_default_value); \
+	}
+
+Dictionary expected_ot_name_strings() {
+	Dictionary d = Dictionary();
+	d["en"] = Dictionary();
+	((Dictionary)d["en"])["copyright"] = "Copyright 2022 The Noto Project Authors (https://github.com/notofonts/hebrew)";
+	((Dictionary)d["en"])["family_name"] = "Noto Sans Hebrew";
+	((Dictionary)d["en"])["subfamily_name"] = "Regular";
+	((Dictionary)d["en"])["full_name"] = "Noto Sans Hebrew Regular";
+	((Dictionary)d["en"])["unique_identifier"] = "2.003;GOOG;NotoSansHebrew-Regular";
+	((Dictionary)d["en"])["version"] = "Version 2.003";
+	((Dictionary)d["en"])["postscript_name"] = "NotoSansHebrew-Regular";
+	((Dictionary)d["en"])["trademark"] = "Noto is a trademark of Google Inc.";
+	((Dictionary)d["en"])["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";
+	((Dictionary)d["en"])["license_url"] = "https://scripts.sil.org/OFL";
+	((Dictionary)d["en"])["designer"] = "Monotype Design Team";
+	((Dictionary)d["en"])["designer_url"] = "http://www.monotype.com/studio";
+	((Dictionary)d["en"])["description"] = "Designed by Monotype design team.";
+	((Dictionary)d["en"])["manufacturer"] = "Monotype Imaging Inc.";
+	((Dictionary)d["en"])["vendor_url"] = "http://www.google.com/get/noto/";
+
+	return d;
+}
+
+// These properties come from the font file itself.
+GETTER_TEST("font_name", get_font_name(), "Noto Sans Hebrew")
+GETTER_TEST("font_style_name", get_font_style_name(), "Regular")
+GETTER_TEST("font_weight", get_font_weight(), 400)
+GETTER_TEST("font_stretch", get_font_stretch(), 100)
+GETTER_TEST("opentype_features", get_opentype_features(), Dictionary())
+GETTER_TEST("ot_name_strings", 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.
+GETTER_TEST_REAL("height-small", get_height(10), (real_t)14)
+GETTER_TEST_REAL("ascent-small", get_ascent(10), (real_t)11)
+GETTER_TEST_REAL("descent-small", get_descent(10), (real_t)3)
+GETTER_TEST_REAL("underline_position-small", get_underline_position(10), (real_t)1.25)
+GETTER_TEST_REAL("underline_thickness-small", get_underline_thickness(10), (real_t)0.5)
+
+GETTER_TEST_REAL("height-large", get_height(100), (real_t)137)
+GETTER_TEST_REAL("ascent-large", get_ascent(100), (real_t)107)
+GETTER_TEST_REAL("descent-large", get_descent(100), (real_t)30)
+GETTER_TEST_REAL("underline_position-large", get_underline_position(100), (real_t)12.5)
+GETTER_TEST_REAL("underline_thickness-large", get_underline_thickness(100), (real_t)5)
+
+#endif
+
 TEST_CASE("[FontFile] Create font file and check data") {
 	// Create test instance.
 	Ref<FontFile> font_file;