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Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
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Tests.startUnit = function () {
    var canvas = document.getElementById('gl');
    var gl = wrapGLContext(getGLContext(canvas));
    return [gl];
}

Tests.setup = function(gl) {
    var tex = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, tex);
    return [gl]
}

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

Tests.testTexImage2D = function(gl) {
    gl.copyTexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 0,0, 16,16, 0);
    assertGLError(gl, gl.INVALID_VALUE, "width > dst tex width", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,0, 17,1);
    });
    assertGLError(gl, gl.INVALID_VALUE, "height > dst tex height", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,0, 1,17);
    });
    // The spec says the source image dimensions can be out of range.
    assertOk("x > dst tex width", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 16,0, 1,1);
    });
    assertOk("y > dst tex width", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,16, 1,1);
    });
    assertOk("x < 0", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, -1,0, 1,1);
    });
    assertOk("y < 0", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,-1, 1,1);
    });
    assertGLError(gl, gl.INVALID_VALUE, "width < 0", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,0, -1,1);
    });
    assertGLError(gl, gl.INVALID_VALUE, "height < 0", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,0, 1,-1);
    });
    assertGLError(gl, gl.INVALID_VALUE, "xoffset < 0", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, -1,0, 0,0, 16,16);
    });
    assertGLError(gl, gl.INVALID_VALUE, "yoffset < 0", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,-1, 0,0, 16,16);
    });
    assertGLError(gl, gl.INVALID_VALUE, "dimension out of range", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 4,0, 0,0, 16,16);
    });
    assertGLError(gl, gl.INVALID_VALUE, "dimension out of range", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,4, 0,0, 16,16);
    });
    assertOk("x < 0 full width", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, -1,0, 16,16);
    });
    assertOk("y < 0 full height", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,-1, 16,16);
    });
    assertOk(function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, 0, 0,0, 0,0, 16,16);
    });
    assertGLError(gl, gl.INVALID_ENUM, "bad target", function(){
        gl.copyTexSubImage2D(gl.FLOAT, 0, 0,0, 0,0, 16,16);
    });
    assertGLError(gl, gl.INVALID_VALUE, "", function(){
        gl.copyTexSubImage2D(gl.TEXTURE_2D, -1, 0,0, 0,0, 16,16);
    });
}


Tests.endUnit = function(gl) {
}

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