public void KhronosApi_Extensions()
{
TestExtensions extensions = new TestExtensions();
Assert.Throws <ArgumentNullException>(() => extensions.HasExtensions(null));
Assert.Throws <ArgumentNullException>(() => extensions.Query(Gl.Version_100, (string)null));
Assert.Throws <ArgumentNullException>(() => extensions.Query(Gl.Version_100, (string[])null));
Assert.DoesNotThrow(() => extensions.Query(Gl.Version_100, ""));
Assert.DoesNotThrow(() => extensions.Query(null, ""));
Assert.DoesNotThrow(() => extensions.Query(null, " "));
// Defaults to false
Assert.IsFalse(extensions.HasExtensions("GL_EXT_1"));
Assert.IsFalse(extensions.Ext1);
Assert.IsFalse(extensions.HasExtensions("GL_EXT_2"));
Assert.IsFalse(extensions.Ext2);
Assert.IsFalse(extensions.HasExtensions("GL_EXT_3"));
Assert.IsFalse(extensions.Ext3);
Assert.IsFalse(extensions.Ext);
Assert.IsFalse(extensions.Core1);
Assert.IsFalse(extensions.Core2);
Assert.IsFalse(extensions.Core3);
// Filter by API
extensions.Query(Gl.Version_100, "GL_EXT_1 GL_EXT_2 GL_EXT_3");
Assert.IsTrue(extensions.HasExtensions("GL_EXT_1"));
Assert.IsTrue(extensions.Ext1);
Assert.IsTrue(extensions.HasExtensions("GL_EXT_2")); // Extension listed as supported!
Assert.IsFalse(extensions.Ext2); // ...but field is filtered by API ('gl' in this case) (*)
Assert.IsTrue(extensions.HasExtensions("GL_EXT_3"));
Assert.IsTrue(extensions.Ext3);
Assert.IsTrue(extensions.Ext);
Assert.IsFalse(extensions.Core1);
Assert.IsFalse(extensions.Core2);
Assert.IsFalse(extensions.Core3);
// (*) This should happen when the extensions string is coherent with the GL context version
extensions.Query(Gl.Version_200_ES, "GL_EXT_1 GL_EXT_2 GL_EXT_3");
Assert.IsTrue(extensions.HasExtensions("GL_EXT_1"));
Assert.IsFalse(extensions.Ext1);
Assert.IsTrue(extensions.HasExtensions("GL_EXT_2"));
Assert.IsTrue(extensions.Ext2);
Assert.IsTrue(extensions.HasExtensions("GL_EXT_3"));
Assert.IsTrue(extensions.Ext3);
Assert.IsTrue(extensions.Ext);
Assert.IsFalse(extensions.Core1);
Assert.IsFalse(extensions.Core2);
Assert.IsFalse(extensions.Core3);
extensions.Query(Gl.Version_100, "GL_EXT_2");
Assert.IsFalse(extensions.HasExtensions("GL_EXT_1"));
Assert.IsFalse(extensions.Ext1);
Assert.IsTrue(extensions.HasExtensions("GL_EXT_2"));
Assert.IsFalse(extensions.Ext2);
Assert.IsFalse(extensions.HasExtensions("GL_EXT_3"));
Assert.IsFalse(extensions.Ext3);
Assert.IsFalse(extensions.Ext);
Assert.IsFalse(extensions.Core1);
Assert.IsFalse(extensions.Core2);
Assert.IsFalse(extensions.Core3);
// Filter by version
extensions.Query(Gl.Version_320, "");
Assert.IsFalse(extensions.HasExtensions("GL_EXT_1"));
Assert.IsFalse(extensions.Ext1);
Assert.IsFalse(extensions.HasExtensions("GL_EXT_2"));
Assert.IsFalse(extensions.Ext2);
Assert.IsFalse(extensions.HasExtensions("GL_EXT_3"));
Assert.IsFalse(extensions.Ext3);
Assert.IsFalse(extensions.Ext);
Assert.IsTrue(extensions.Core1);
Assert.IsFalse(extensions.Core2);
Assert.IsTrue(extensions.Core3);
extensions.Query(Gl.Version_320_ES, "");
Assert.IsFalse(extensions.HasExtensions("GL_EXT_1"));
Assert.IsFalse(extensions.Ext1);
Assert.IsFalse(extensions.HasExtensions("GL_EXT_2"));
Assert.IsFalse(extensions.Ext2);
Assert.IsFalse(extensions.HasExtensions("GL_EXT_3"));
Assert.IsFalse(extensions.Ext3);
Assert.IsFalse(extensions.Ext);
Assert.IsFalse(extensions.Core1);
Assert.IsTrue(extensions.Core2);
Assert.IsTrue(extensions.Core3);
// Duplicated extension are managed nicely
Assert.DoesNotThrow(() => extensions.Query(null, "GL_EXT_3 GL_EXT_3 GL_EXT_3"));
// Mixed attributes
extensions.Query(Gl.Version_100, "");
Assert.IsFalse(extensions.Mixed);
extensions.Query(Gl.Version_320, "");
Assert.IsTrue(extensions.Mixed);
extensions.Query(Gl.Version_100, "GL_EXT_3");
Assert.IsTrue(extensions.Mixed);
}