/**
 * @author TristanVALCKE / https://github.com/Itee
 */
/* global QUnit */

import { WebGLRenderer } from '../../../../src/renderers/WebGLRenderer';

var customDocument = function () {

	this.createElementNS = function ( namespace, elementName ) {

		if ( namespace === "http://www.w3.org/1999/xhtml" && elementName === "canvas" ) {

			return new customCanvas();

		} else {

			throw new Error( "customDocument.CreateElementNS has not implemented following element " + elementName + " from namespace " + namespace + "." );

		}

	};

};

var customCanvas = function () {

	this.width = 200;
	this.height = 200;
	this.addEventListener = function () {};
	this.getContext = function ( contextName ) {

		if ( contextName === "webgl" ) {

			return new customWebGLContext();

		} else {

			throw new Error( "customCanvas.getContext has not implemented following context " + contextName + "." );

		}

	};

};

var customWebGLContext = function () {

	this.DEPTH_BUFFER_BIT = 256;
	this.STENCIL_BUFFER_BIT = 1024;
	this.COLOR_BUFFER_BIT = 16384;
	this.POINTS = 0;
	this.LINES = 1;
	this.LINE_LOOP = 2;
	this.LINE_STRIP = 3;
	this.TRIANGLES = 4;
	this.TRIANGLE_STRIP = 5;
	this.TRIANGLE_FAN = 6;
	this.ZERO = 0;
	this.ONE = 1;
	this.SRC_COLOR = 768;
	this.ONE_MINUS_SRC_COLOR = 769;
	this.SRC_ALPHA = 770;
	this.ONE_MINUS_SRC_ALPHA = 771;
	this.DST_ALPHA = 772;
	this.ONE_MINUS_DST_ALPHA = 773;
	this.DST_COLOR = 774;
	this.ONE_MINUS_DST_COLOR = 775;
	this.SRC_ALPHA_SATURATE = 776;
	this.FUNC_ADD = 32774;
	this.BLEND_EQUATION = 32777;
	this.BLEND_EQUATION_RGB = 32777;
	this.BLEND_EQUATION_ALPHA = 34877;
	this.FUNC_SUBTRACT = 32778;
	this.FUNC_REVERSE_SUBTRACT = 32779;
	this.BLEND_DST_RGB = 32968;
	this.BLEND_SRC_RGB = 32969;
	this.BLEND_DST_ALPHA = 32970;
	this.BLEND_SRC_ALPHA = 32971;
	this.CONSTANT_COLOR = 32769;
	this.ONE_MINUS_CONSTANT_COLOR = 32770;
	this.CONSTANT_ALPHA = 32771;
	this.ONE_MINUS_CONSTANT_ALPHA = 32772;
	this.BLEND_COLOR = 32773;
	this.ARRAY_BUFFER = 34962;
	this.ELEMENT_ARRAY_BUFFER = 34963;
	this.ARRAY_BUFFER_BINDING = 34964;
	this.ELEMENT_ARRAY_BUFFER_BINDING = 34965;
	this.STREAM_DRAW = 35040;
	this.STATIC_DRAW = 35044;
	this.DYNAMIC_DRAW = 35048;
	this.BUFFER_SIZE = 34660;
	this.BUFFER_USAGE = 34661;
	this.CURRENT_VERTEX_ATTRIB = 34342;
	this.FRONT = 1028;
	this.BACK = 1029;
	this.FRONT_AND_BACK = 1032;
	this.TEXTURE_2D = 3553;
	this.CULL_FACE = 2884;
	this.BLEND = 3042;
	this.DITHER = 3024;
	this.STENCIL_TEST = 2960;
	this.DEPTH_TEST = 2929;
	this.SCISSOR_TEST = 3089;
	this.POLYGON_OFFSET_FILL = 32823;
	this.SAMPLE_ALPHA_TO_COVERAGE = 32926;
	this.SAMPLE_COVERAGE = 32928;
	this.NO_ERROR = 0;
	this.INVALID_ENUM = 1280;
	this.INVALID_VALUE = 1281;
	this.INVALID_OPERATION = 1282;
	this.OUT_OF_MEMORY = 1285;
	this.CW = 2304;
	this.CCW = 2305;
	this.LINE_WIDTH = 2849;
	this.ALIASED_POINT_SIZE_RANGE = 33901;
	this.ALIASED_LINE_WIDTH_RANGE = 33902;
	this.CULL_FACE_MODE = 2885;
	this.FRONT_FACE = 2886;
	this.DEPTH_RANGE = 2928;
	this.DEPTH_WRITEMASK = 2930;
	this.DEPTH_CLEAR_VALUE = 2931;
	this.DEPTH_FUNC = 2932;
	this.STENCIL_CLEAR_VALUE = 2961;
	this.STENCIL_FUNC = 2962;
	this.STENCIL_FAIL = 2964;
	this.STENCIL_PASS_DEPTH_FAIL = 2965;
	this.STENCIL_PASS_DEPTH_PASS = 2966;
	this.STENCIL_REF = 2967;
	this.STENCIL_VALUE_MASK = 2963;
	this.STENCIL_WRITEMASK = 2968;
	this.STENCIL_BACK_FUNC = 34816;
	this.STENCIL_BACK_FAIL = 34817;
	this.STENCIL_BACK_PASS_DEPTH_FAIL = 34818;
	this.STENCIL_BACK_PASS_DEPTH_PASS = 34819;
	this.STENCIL_BACK_REF = 36003;
	this.STENCIL_BACK_VALUE_MASK = 36004;
	this.STENCIL_BACK_WRITEMASK = 36005;
	this.VIEWPORT = 2978;
	this.SCISSOR_BOX = 3088;
	this.COLOR_CLEAR_VALUE = 3106;
	this.COLOR_WRITEMASK = 3107;
	this.UNPACK_ALIGNMENT = 3317;
	this.PACK_ALIGNMENT = 3333;
	this.MAX_TEXTURE_SIZE = 3379;
	this.MAX_VIEWPORT_DIMS = 3386;
	this.SUBPIXEL_BITS = 3408;
	this.RED_BITS = 3410;
	this.GREEN_BITS = 3411;
	this.BLUE_BITS = 3412;
	this.ALPHA_BITS = 3413;
	this.DEPTH_BITS = 3414;
	this.STENCIL_BITS = 3415;
	this.POLYGON_OFFSET_UNITS = 10752;
	this.POLYGON_OFFSET_FACTOR = 32824;
	this.TEXTURE_BINDING_2D = 32873;
	this.SAMPLE_BUFFERS = 32936;
	this.SAMPLES = 32937;
	this.SAMPLE_COVERAGE_VALUE = 32938;
	this.SAMPLE_COVERAGE_INVERT = 32939;
	this.COMPRESSED_TEXTURE_FORMATS = 34467;
	this.DONT_CARE = 4352;
	this.FASTEST = 4353;
	this.NICEST = 4354;
	this.GENERATE_MIPMAP_HINT = 33170;
	this.BYTE = 5120;
	this.UNSIGNED_BYTE = 5121;
	this.SHORT = 5122;
	this.UNSIGNED_SHORT = 5123;
	this.INT = 5124;
	this.UNSIGNED_INT = 5125;
	this.FLOAT = 5126;
	this.DEPTH_COMPONENT = 6402;
	this.ALPHA = 6406;
	this.RGB = 6407;
	this.RGBA = 6408;
	this.LUMINANCE = 6409;
	this.LUMINANCE_ALPHA = 6410;
	this.UNSIGNED_SHORT_4_4_4_4 = 32819;
	this.UNSIGNED_SHORT_5_5_5_1 = 32820;
	this.UNSIGNED_SHORT_5_6_5 = 33635;
	this.FRAGMENT_SHADER = 35632;
	this.VERTEX_SHADER = 35633;
	this.MAX_VERTEX_ATTRIBS = 34921;
	this.MAX_VERTEX_UNIFORM_VECTORS = 36347;
	this.MAX_VARYING_VECTORS = 36348;
	this.MAX_COMBINED_TEXTURE_IMAGE_UNITS = 35661;
	this.MAX_VERTEX_TEXTURE_IMAGE_UNITS = 35660;
	this.MAX_TEXTURE_IMAGE_UNITS = 34930;
	this.MAX_FRAGMENT_UNIFORM_VECTORS = 36349;
	this.SHADER_TYPE = 35663;
	this.DELETE_STATUS = 35712;
	this.LINK_STATUS = 35714;
	this.VALIDATE_STATUS = 35715;
	this.ATTACHED_SHADERS = 35717;
	this.ACTIVE_UNIFORMS = 35718;
	this.ACTIVE_ATTRIBUTES = 35721;
	this.SHADING_LANGUAGE_VERSION = 35724;
	this.CURRENT_PROGRAM = 35725;
	this.NEVER = 512;
	this.LESS = 513;
	this.EQUAL = 514;
	this.LEQUAL = 515;
	this.GREATER = 516;
	this.NOTEQUAL = 517;
	this.GEQUAL = 518;
	this.ALWAYS = 519;
	this.KEEP = 7680;
	this.REPLACE = 7681;
	this.INCR = 7682;
	this.DECR = 7683;
	this.INVERT = 5386;
	this.INCR_WRAP = 34055;
	this.DECR_WRAP = 34056;
	this.VENDOR = 7936;
	this.RENDERER = 7937;
	this.VERSION = 7938;
	this.NEAREST = 9728;
	this.LINEAR = 9729;
	this.NEAREST_MIPMAP_NEAREST = 9984;
	this.LINEAR_MIPMAP_NEAREST = 9985;
	this.NEAREST_MIPMAP_LINEAR = 9986;
	this.LINEAR_MIPMAP_LINEAR = 9987;
	this.TEXTURE_MAG_FILTER = 10240;
	this.TEXTURE_MIN_FILTER = 10241;
	this.TEXTURE_WRAP_S = 10242;
	this.TEXTURE_WRAP_T = 10243;
	this.TEXTURE = 5890;
	this.TEXTURE_CUBE_MAP = 34067;
	this.TEXTURE_BINDING_CUBE_MAP = 34068;
	this.TEXTURE_CUBE_MAP_POSITIVE_X = 34069;
	this.TEXTURE_CUBE_MAP_NEGATIVE_X = 34070;
	this.TEXTURE_CUBE_MAP_POSITIVE_Y = 34071;
	this.TEXTURE_CUBE_MAP_NEGATIVE_Y = 34072;
	this.TEXTURE_CUBE_MAP_POSITIVE_Z = 34073;
	this.TEXTURE_CUBE_MAP_NEGATIVE_Z = 34074;
	this.MAX_CUBE_MAP_TEXTURE_SIZE = 34076;
	this.TEXTURE0 = 33984;
	this.TEXTURE1 = 33985;
	this.TEXTURE2 = 33986;
	this.TEXTURE3 = 33987;
	this.TEXTURE4 = 33988;
	this.TEXTURE5 = 33989;
	this.TEXTURE6 = 33990;
	this.TEXTURE7 = 33991;
	this.TEXTURE8 = 33992;
	this.TEXTURE9 = 33993;
	this.TEXTURE10 = 33994;
	this.TEXTURE11 = 33995;
	this.TEXTURE12 = 33996;
	this.TEXTURE13 = 33997;
	this.TEXTURE14 = 33998;
	this.TEXTURE15 = 33999;
	this.TEXTURE16 = 34000;
	this.TEXTURE17 = 34001;
	this.TEXTURE18 = 34002;
	this.TEXTURE19 = 34003;
	this.TEXTURE20 = 34004;
	this.TEXTURE21 = 34005;
	this.TEXTURE22 = 34006;
	this.TEXTURE23 = 34007;
	this.TEXTURE24 = 34008;
	this.TEXTURE25 = 34009;
	this.TEXTURE26 = 34010;
	this.TEXTURE27 = 34011;
	this.TEXTURE28 = 34012;
	this.TEXTURE29 = 34013;
	this.TEXTURE30 = 34014;
	this.TEXTURE31 = 34015;
	this.ACTIVE_TEXTURE = 34016;
	this.REPEAT = 10497;
	this.CLAMP_TO_EDGE = 33071;
	this.MIRRORED_REPEAT = 33648;
	this.FLOAT_VEC2 = 35664;
	this.FLOAT_VEC3 = 35665;
	this.FLOAT_VEC4 = 35666;
	this.INT_VEC2 = 35667;
	this.INT_VEC3 = 35668;
	this.INT_VEC4 = 35669;
	this.BOOL = 35670;
	this.BOOL_VEC2 = 35671;
	this.BOOL_VEC3 = 35672;
	this.BOOL_VEC4 = 35673;
	this.FLOAT_MAT2 = 35674;
	this.FLOAT_MAT3 = 35675;
	this.FLOAT_MAT4 = 35676;
	this.SAMPLER_2D = 35678;
	this.SAMPLER_CUBE = 35680;
	this.VERTEX_ATTRIB_ARRAY_ENABLED = 34338;
	this.VERTEX_ATTRIB_ARRAY_SIZE = 34339;
	this.VERTEX_ATTRIB_ARRAY_STRIDE = 34340;
	this.VERTEX_ATTRIB_ARRAY_TYPE = 34341;
	this.VERTEX_ATTRIB_ARRAY_NORMALIZED = 34922;
	this.VERTEX_ATTRIB_ARRAY_POINTER = 34373;
	this.VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = 34975;
	this.IMPLEMENTATION_COLOR_READ_TYPE = 35738;
	this.IMPLEMENTATION_COLOR_READ_FORMAT = 35739;
	this.COMPILE_STATUS = 35713;
	this.LOW_FLOAT = 36336;
	this.MEDIUM_FLOAT = 36337;
	this.HIGH_FLOAT = 36338;
	this.LOW_INT = 36339;
	this.MEDIUM_INT = 36340;
	this.HIGH_INT = 36341;
	this.FRAMEBUFFER = 36160;
	this.RENDERBUFFER = 36161;
	this.RGBA4 = 32854;
	this.RGB5_A1 = 32855;
	this.RGB565 = 36194;
	this.DEPTH_COMPONENT16 = 33189;
	this.STENCIL_INDEX8 = 36168;
	this.DEPTH_STENCIL = 34041;
	this.RENDERBUFFER_WIDTH = 36162;
	this.RENDERBUFFER_HEIGHT = 36163;
	this.RENDERBUFFER_INTERNAL_FORMAT = 36164;
	this.RENDERBUFFER_RED_SIZE = 36176;
	this.RENDERBUFFER_GREEN_SIZE = 36177;
	this.RENDERBUFFER_BLUE_SIZE = 36178;
	this.RENDERBUFFER_ALPHA_SIZE = 36179;
	this.RENDERBUFFER_DEPTH_SIZE = 36180;
	this.RENDERBUFFER_STENCIL_SIZE = 36181;
	this.FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = 36048;
	this.FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = 36049;
	this.FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = 36050;
	this.FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = 36051;
	this.COLOR_ATTACHMENT0 = 36064;
	this.DEPTH_ATTACHMENT = 36096;
	this.STENCIL_ATTACHMENT = 36128;
	this.DEPTH_STENCIL_ATTACHMENT = 33306;
	this.NONE = 0;
	this.FRAMEBUFFER_COMPLETE = 36053;
	this.FRAMEBUFFER_INCOMPLETE_ATTACHMENT = 36054;
	this.FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = 36055;
	this.FRAMEBUFFER_INCOMPLETE_DIMENSIONS = 36057;
	this.FRAMEBUFFER_UNSUPPORTED = 36061;
	this.FRAMEBUFFER_BINDING = 36006;
	this.RENDERBUFFER_BINDING = 36007;
	this.MAX_RENDERBUFFER_SIZE = 34024;
	this.INVALID_FRAMEBUFFER_OPERATION = 1286;
	this.UNPACK_FLIP_Y_WEBGL = 37440;
	this.UNPACK_PREMULTIPLY_ALPHA_WEBGL = 37441;
	this.CONTEXT_LOST_WEBGL = 37442;
	this.UNPACK_COLORSPACE_CONVERSION_WEBGL = 37443;
	this.BROWSER_DEFAULT_WEBGL = 37444;


	this.activeTexture = function () {};
	this.attachShader = function () {};
	this.bindAttribLocation = function () {};
	this.bindBuffer = function () {};
	this.bindFramebuffer = function () {};
	this.bindRenderbuffer = function () {};
	this.bindTexture = function () {};
	this.blendColor = function () {};
	this.blendEquation = function () {};
	this.blendEquationSeparate = function () {};
	this.blendFunc = function () {};
	this.blendFuncSeparate = function () {};
	this.bufferData = function () {};
	this.bufferSubData = function () {};
	this.checkFramebufferStatus = function () {};
	this.clear = function () {};
	this.clearColor = function () {};
	this.clearDepth = function () {};
	this.clearStencil = function () {};
	this.colorMask = function () {};
	this.compileShader = function () {};
	this.compressedTexImage2D = function () {};
	this.compressedTexSubImage2D = function () {};
	this.copyTexImage2D = function () {};
	this.copyTexSubImage2D = function () {};
	this.createBuffer = function () {};
	this.createFramebuffer = function () {};
	this.createProgram = function () {};
	this.createRenderbuffer = function () {};
	this.createShader = function () {};
	this.createTexture = function () {};
	this.cullFace = function () {};
	this.deleteBuffer = function () {};
	this.deleteFramebuffer = function () {};
	this.deleteProgram = function () {};
	this.deleteRenderbuffer = function () {};
	this.deleteShader = function () {};
	this.deleteTexture = function () {};
	this.depthFunc = function () {};
	this.depthMask = function () {};
	this.depthRange = function () {};
	this.detachShader = function () {};
	this.disable = function () {};
	this.disableVertexAttribArray = function () {};
	this.drawArrays = function () {};
	this.drawElements = function () {};
	this.enable = function () {};
	this.enableVertexAttribArray = function () {};
	this.finish = function () {};
	this.flush = function () {};
	this.framebufferRenderbuffer = function () {};
	this.framebufferTexture2D = function () {};
	this.frontFace = function () {};
	this.generateMipmap = function () {};
	this.getActiveAttrib = function () {};
	this.getActiveUniform = function () {};
	this.getAttachedShaders = function () {};
	this.getAttribLocation = function () {};
	this.getBufferParameter = function () {};
	this.getContextAttributes = function () {};
	this.getError = function () {};
	this.getExtension = function () {};
	this.getFramebufferAttachmentParameter = function () {};

	var parameters = {};
	parameters[ this.VERSION ] = "Custom";
	this.getParameter = function ( parameterID ) {

		return parameters[ parameterID ];

	};

	this.getProgramParameter = function () {};
	this.getProgramInfoLog = function () {};
	this.getRenderbufferParameter = function () {};
	this.getShaderParameter = function () {};
	this.getShaderInfoLog = function () {};
	this.getShaderPrecisionFormat = function () {

		return { 'rangeMin': 1, 'rangeMax': 1, 'precision': 1 };

	};
	this.getShaderSource = function () {};
	this.getSupportedExtensions = function () {};
	this.getTexParameter = function () {};
	this.getUniform = function () {};
	this.getUniformLocation = function () {};
	this.getVertexAttrib = function () {};
	this.getVertexAttribOffset = function () {};
	this.hint = function () {};
	this.isBuffer = function () {};
	this.isContextLost = function () {};
	this.isEnabled = function () {};
	this.isFramebuffer = function () {};
	this.isProgram = function () {};
	this.isRenderbuffer = function () {};
	this.isShader = function () {};
	this.isTexture = function () {};
	this.lineWidth = function () {};
	this.linkProgram = function () {};
	this.pixelStorei = function () {};
	this.polygonOffset = function () {};
	this.readPixels = function () {};
	this.renderbufferStorage = function () {};
	this.sampleCoverage = function () {};
	this.scissor = function () {};
	this.shaderSource = function () {};
	this.stencilFunc = function () {};
	this.stencilFuncSeparate = function () {};
	this.stencilMask = function () {};
	this.stencilMaskSeparate = function () {};
	this.stencilOp = function () {};
	this.stencilOpSeparate = function () {};
	this.texParameterf = function () {};
	this.texParameteri = function () {};
	this.texImage2D = function () {};
	this.texSubImage2D = function () {};
	this.uniform1f = function () {};
	this.uniform1fv = function () {};
	this.uniform1i = function () {};
	this.uniform1iv = function () {};
	this.uniform2f = function () {};
	this.uniform2fv = function () {};
	this.uniform2i = function () {};
	this.uniform2iv = function () {};
	this.uniform3f = function () {};
	this.uniform3fv = function () {};
	this.uniform3i = function () {};
	this.uniform3iv = function () {};
	this.uniform4f = function () {};
	this.uniform4fv = function () {};
	this.uniform4i = function () {};
	this.uniform4iv = function () {};
	this.uniformMatrix2fv = function () {};
	this.uniformMatrix3fv = function () {};
	this.uniformMatrix4fv = function () {};
	this.useProgram = function () {};
	this.validateProgram = function () {};
	this.vertexAttrib1f = function () {};
	this.vertexAttrib1fv = function () {};
	this.vertexAttrib2f = function () {};
	this.vertexAttrib2fv = function () {};
	this.vertexAttrib3f = function () {};
	this.vertexAttrib3fv = function () {};
	this.vertexAttrib4f = function () {};
	this.vertexAttrib4fv = function () {};
	this.vertexAttribPointer = function () {};
	this.viewport = function () {};


};

export default QUnit.module( 'Renderers', () => {

	QUnit.module( 'WebGLRenderer', ( hooks ) => {

		// You can invoke the hooks methods more than once.
		hooks.beforeEach( function () {

			global.__old__document__ = global.document;
			global.document = new customDocument();

		} );

		hooks.afterEach( function () {

			global.document = global.__old__document__;
			global.__old__document__ = undefined;

		} );


		// INSTANCING
		QUnit.test( "Instancing", ( assert ) => {

			var webGLRenderer = new WebGLRenderer();
			assert.ok( webGLRenderer, "webGLRenderer instanciated" );
			assert.ok( webGLRenderer.domElement instanceof customCanvas, "webGLRenderer instanciated" );
			assert.ok( webGLRenderer.context instanceof customWebGLContext, "webGLRenderer instanciated" );

			var canvas = new customCanvas();
			webGLRenderer = new WebGLRenderer( { canvas: canvas } );
			assert.ok( webGLRenderer, "webGLRenderer instanciated" );
			assert.ok( webGLRenderer.domElement === canvas, "webGLRenderer instanciated" );
			assert.ok( webGLRenderer.context instanceof customWebGLContext, "webGLRenderer instanciated" );

			var context = new customWebGLContext();
			webGLRenderer = new WebGLRenderer( { canvas: canvas, context: context } );
			assert.ok( webGLRenderer, "webGLRenderer instanciated" );
			assert.ok( webGLRenderer.domElement === canvas, "webGLRenderer instanciated" );
			assert.ok( webGLRenderer.context === context, "webGLRenderer instanciated" );

		} );

		// PUBLIC STUFF
		QUnit.todo( "PrayForUs", ( assert ) => {

			assert.ok( false, "everything's gonna be alright" );

		} );

	} );

} );