|  | <!doctype html> | 
|  | <title>compressedTexImage2D</title> | 
|  | <link rel=author href=mailto:Ms2ger@gmail.com title=Ms2ger> | 
|  | <link rel=help href=https://www.khronos.org/registry/webgl/specs/latest/#5.14.8> | 
|  | <script src=/resources/testharness.js></script> | 
|  | <script src=/resources/testharnessreport.js></script> | 
|  | <script src=common.js></script> | 
|  |  | 
|  | <div id=log></div> | 
|  | <script> | 
|  | test(function() { | 
|  | var COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0; | 
|  | var gl = getGl(); | 
|  |  | 
|  | var tex = gl.createTexture(); | 
|  | gl.bindTexture(gl.TEXTURE_2D, tex); | 
|  |  | 
|  | shouldGenerateGLError(gl, gl.INVALID_ENUM, function() { | 
|  | gl.compressedTexImage2D(gl.TEXTURE_2D, 0, COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0, new Uint8Array(8)); | 
|  | }); | 
|  | shouldGenerateGLError(gl, gl.INVALID_ENUM, function() { | 
|  | gl.compressedTexImage2D(gl.TEXTURE_2D, 0, COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0, new Uint8Array(8), null); | 
|  | }); | 
|  | test(function() { | 
|  | assert_throws(new TypeError(), function() { | 
|  | gl.compressedTexImage2D(gl.TEXTURE_2D, 0, COMPRESSED_RGB_S3TC_DXT1_EXT, 4, 4, 0); | 
|  | }); | 
|  | }, "Should throw a TypeError when passing too few arguments."); | 
|  | }); | 
|  | </script> |