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"use strict";
description("Test for invalid passed parameters");

var wtu = WebGLTestUtils;
var context = wtu.create3DContext();
var contextVersion = wtu.getDefault3DContextVersion();

debug("");
debug("Test createShader()");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.createShader(context.FRAGMENT_SHADER)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.createShader(context.VERTEX_SHADER)");
wtu.shouldGenerateGLError(context, context.INVALID_ENUM, "context.createShader(0)");
wtu.shouldGenerateGLError(context, context.INVALID_ENUM, "context.createShader(context.TRIANGLES)");

debug("");
debug("Test clear()");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.clear(desktopGL['ACCUM_BUFFER_BIT'])");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.clear(desktopGL['ACCUM_BUFFER_BIT'] | context.COLOR_BUFFER_BIT)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.clear(desktopGL['ACCUM_BUFFER_BIT'] | context.COLOR_BUFFER_BIT | context.DEPTH_BUFFER_BIT | context.STENCIL_BUFFER_BIT)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.clear(context.COLOR_BUFFER_BIT | context.DEPTH_BUFFER_BIT | context.STENCIL_BUFFER_BIT)");

debug("");
debug("Test {copy}Tex{Sub}Image2D with negative offset/width/height");
var tex = context.createTexture();
var pixels = new Uint8Array(2 * 2 * 4);
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.bindTexture(context.TEXTURE_2D, tex)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.texImage2D(context.TEXTURE_2D, 0, context.RGBA, -16, -16, 0, context.RGBA, context.UNSIGNED_BYTE, null)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.texImage2D(context.TEXTURE_2D, 0, context.RGBA, 16, 16, 0, context.RGBA, context.UNSIGNED_BYTE, null)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.texSubImage2D(context.TEXTURE_2D, 0, -1, -1, 2, 2, context.RGBA, context.UNSIGNED_BYTE, pixels)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.texSubImage2D(context.TEXTURE_2D, 0, 0, 0, -1, -1, context.RGBA, context.UNSIGNED_BYTE, pixels)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.texSubImage2D(context.TEXTURE_2D, 0, 0, 0, 2, 2, context.RGBA, context.UNSIGNED_BYTE, pixels)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.copyTexImage2D(context.TEXTURE_2D, 0, context.RGBA, 0, 0, -1, -1, 0)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.copyTexImage2D(context.TEXTURE_2D, 0, context.RGBA, 0, 0, 16, 16, 0)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.copyTexSubImage2D(context.TEXTURE_2D, 0, -1, -1, 0, 0, 2, 2)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.copyTexSubImage2D(context.TEXTURE_2D, 0, 0, 0, 0, 0, -1, -1)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.copyTexSubImage2D(context.TEXTURE_2D, 0, 0, 0, 0, 0, 2, 2)");

debug("");
debug("Test renderbufferStorage() with negative width/height");
var renderbuffer = context.createRenderbuffer();
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.bindRenderbuffer(context.RENDERBUFFER, renderbuffer)");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.renderbufferStorage(context.RENDERBUFFER, context.RGBA4, -2, -2)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.renderbufferStorage(context.RENDERBUFFER, context.RGBA4, 16, 16)");

debug("");
debug("Test scissor() with negative width/height");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.scissor(0, 0, -2, -2)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.scissor(0, 0, 16, 16)");

debug("");
debug("Test viewport() with negative width/height");
wtu.shouldGenerateGLError(context, context.INVALID_VALUE, "context.viewport(0, 0, -2, -2)");
wtu.shouldGenerateGLError(context, context.NO_ERROR, "context.viewport(0, 0, 16, 16)");

debug("");
debug("Set up a program to test invalid characters");
var invalidSet = ['"', '$', '`', '@', '\\', "'"];
var validUniformName = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_1234567890";
var validAttribName = "abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890";
function generateShaderSource(opt_invalidIdentifierChar, opt_invalidCommentChar) {
  var invalidIdentifierString = "";
  var invalidCommentString = "";
  if (opt_invalidIdentifierChar != undefined) {
    invalidIdentifierString += opt_invalidIdentifierChar;
  }
  if (opt_invalidCommentChar != undefined) {
    invalidCommentString += opt_invalidCommentChar;
  }
  return "uniform float " + validUniformName + invalidIdentifierString + ";\n"
                          + "varying float " + validAttribName + ";\n"
                          + "void main() {\n"
                          + validAttribName  + " = " + validUniformName + ";\n"
                          + "gl_Position = vec4(0.0, 0.0, 0.0, 1.0); }\n"
                          + "//.+-/*%<>[](){}^|&~=!:;,?# " + invalidCommentString;
}
var vShader = context.createShader(context.VERTEX_SHADER);
context.shaderSource(vShader, generateShaderSource());
context.compileShader(vShader);
shouldBe("context.getError()", "context.NO_ERROR");
var fShader = context.createShader(context.FRAGMENT_SHADER);
context.shaderSource(fShader, "precision mediump float;\n"
                              + "varying float " + validAttribName + ";\n"
                              + "void main() {\n"
                              + "gl_FragColor = vec4(" + validAttribName + ", 0.0, 0.0, 1.0); }");
context.compileShader(fShader);
shouldBe("context.getError()", "context.NO_ERROR");
var program = context.createProgram();
context.attachShader(program, vShader);
context.attachShader(program, fShader);
context.linkProgram(program);
var linkStatus = context.getProgramParameter(program, context.LINK_STATUS);
shouldBeTrue("linkStatus");
if (!linkStatus)
  debug(context.getProgramInfoLog(program));
shouldBe("context.getError()", "context.NO_ERROR");
context.bindAttribLocation(program, 1, validAttribName);
shouldBe("context.getError()", "context.NO_ERROR");
context.getAttribLocation(program, validAttribName);
shouldBe("context.getError()", "context.NO_ERROR");
context.getUniformLocation(program, validUniformName);
shouldBe("context.getError()", "context.NO_ERROR");

debug("");
debug("Test shaderSource() with invalid characters");
for (var i = 0; i < invalidSet.length; ++i) {
  // Backslash as line-continuation is allowed in WebGL 2.0.
  if (contextVersion > 1 && invalidSet[i] == '\\')
    continue;
  // With recent specification changes from
  // https://github.com/KhronosGroup/WebGL/pull/3206 , shaderSource no
  // longer generates INVALID_VALUE.
  var validShaderSource = generateShaderSource(undefined, invalidSet[i]);
  context.shaderSource(vShader, validShaderSource);
  shouldBe("context.getError()", "context.NO_ERROR");
  var invalidShaderSource = generateShaderSource(invalidSet[i], undefined);
  context.shaderSource(vShader, invalidShaderSource);
  shouldBe("context.getError()", "context.NO_ERROR");
}

debug("");
debug("Test bindAttribLocation() with invalid characters");
for (var i = 0; i < invalidSet.length; ++i) {
  var invalidName = validAttribName + invalidSet[i];
  context.bindAttribLocation(program, 1, invalidName);
  shouldBe("context.getError()", "context.INVALID_VALUE");
}

debug("");
debug("Test getAttribLocation() with invalid characters");
for (var i = 0; i < invalidSet.length; ++i) {
  var invalidName = validAttribName + invalidSet[i];
  context.getAttribLocation(program, invalidName);
  shouldBe("context.getError()", "context.INVALID_VALUE");
}

debug("");
debug("Test getUniformLocation() with invalid characters");
for (var i = 0; i < invalidSet.length; ++i) {
  var invalidName = validUniformName + invalidSet[i];
  context.getUniformLocation(program, invalidName);
  shouldBe("context.getError()", "context.INVALID_VALUE");
}

debug("")
var successfullyParsed = true;
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