<!DOCTYPE html>
<html>
<head>
<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="../unit.css" />
<script type="application/javascript" src="../unit.js"></script>
<script type="application/javascript" src="../util.js"></script>
<script type="application/javascript">

Tests.startUnit = function () {
  var canvas = document.getElementById('gl');
  var gl = wrapGLContext(getGLContext(canvas));
  var tex = gl.createTexture();
  gl.bindTexture(gl.TEXTURE_2D, tex);
  return [gl, tex];
}

Tests.testTexImage2D = function(gl) {
    var b = document.createElement('b');
    var div = document.createElement('div');
    var c = document.getElementById('c');
    assertFail("bad element b",
        function() {gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, b); });
    assertFail("bad element div",
        function() {gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, div); });
    assertFail("no element",
        function() {gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, 0); });
    assertFail("string as data",
        function() {gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, "foo"); });
    assertOk("canvas as data",
         function() {gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, c); });
    assertFail("bad target",
        function() {gl.texImage2D(gl.FLOAT, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, c); });
}

Tests.endUnit = function(gl, tex) {
    gl.bindTexture(gl.TEXTURE_2D, null);
    gl.deleteTexture(tex);
}

</script>
<style>canvas{ position:absolute; }</style>
</head><body>
<canvas id="gl" width="16" height="16"></canvas>
<canvas id="c" width="16" height="16"></canvas>
</body></html>
