- meta: |
    state = [ # some non-default values to test with
        ('strokeStyle', '"#ff0000"'),
        ('fillStyle', '"#ff0000"'),
        ('globalAlpha', 0.5),
        ('lineWidth', 0.5),
        ('lineCap', '"round"'),
        ('lineJoin', '"round"'),
        ('miterLimit', 0.5),
        ('shadowOffsetX', 5),
        ('shadowOffsetY', 5),
        ('shadowBlur', 5),
        ('shadowColor', '"#ff0000"'),
        ('globalCompositeOperation', '"copy"'),
    ]
    for key,value in state:
        tests.append( {
            'name': '2d.state.saverestore.%s' % key,
            'desc': 'save()/restore() works for %s' % key,
            'code':
    """// Test that restore() undoes any modifications
    var old = ctx.%(key)s;
    ctx.save();
    ctx.%(key)s = %(value)s;
    ctx.restore();
    @assert ctx.%(key)s === old;

    // Also test that save() doesn't modify the values
    ctx.%(key)s = %(value)s;
    old = ctx.%(key)s;
        // we're not interested in failures caused by get(set(x)) != x (e.g.
        // from rounding), so compare against 'old' instead of against %(value)s
    ctx.save();
    @assert ctx.%(key)s === old;
    ctx.restore();
    t.done();
    """ % { 'key':key, 'value':value }
        } )

    tests.append( {
        'name': '2d.canvas.host.initial.reset.2dstate',
        'desc': 'Resetting the canvas state resets 2D state variables',
        'code':
    """canvas.width = 100;
    var default_val;
    """ + "".join(
    """
    default_val = ctx.%(key)s;
    ctx.%(key)s = %(value)s;
    canvas.width = 100;
    @assert ctx.%(key)s === default_val;
    """ % { 'key':key, 'value':value }
        for key,value in state) + "\nt.done();",
    } )

- meta: |
    # Composite operation tests
    # <http://lists.whatwg.org/htdig.cgi/whatwg-whatwg.org/2007-March/010608.html>
    ops = [
        # name               FA      FB
        ('source-over',      '1',    '1-aA'),
        ('destination-over', '1-aB', '1'),
        ('source-in',        'aB',   '0'),
        ('destination-in',   '0',    'aA'),
        ('source-out',       '1-aB', '0'),
        ('destination-out',  '0',    '1-aA'),
        ('source-atop',      'aB',   '1-aA'),
        ('destination-atop', '1-aB', 'aA'),
        ('xor',              '1-aB', '1-aA'),
        ('copy',             '1',    '0'),
        ('lighter',          '1',    '1'),
        ('clear',            '0',    '0'),
    ]

    # The ones that change the output when src = (0,0,0,0):
    ops_trans = [ 'source-in', 'destination-in', 'source-out', 'destination-atop', 'copy' ];

    def calc_output(A, B, FA_code, FB_code):
        RA, GA, BA, aA = A
        RB, GB, BB, aB = B
        rA, gA, bA = RA*aA, GA*aA, BA*aA
        rB, gB, bB = RB*aB, GB*aB, BB*aB

        FA = eval(FA_code)
        FB = eval(FB_code)

        rO = rA*FA + rB*FB
        gO = gA*FA + gB*FB
        bO = bA*FA + bB*FB
        aO = aA*FA + aB*FB

        rO = min(255, rO)
        gO = min(255, gO)
        bO = min(255, bO)
        aO = min(1, aO)

        if aO:
            RO = rO / aO
            GO = gO / aO
            BO = bO / aO
        else: RO = GO = BO = 0

        return (RO, GO, BO, aO)

    def to_test(color):
        r, g, b, a = color
        return '%d,%d,%d,%d' % (round(r), round(g), round(b), round(a*255))
    def to_cairo(color):
        r, g, b, a = color
        return '%f,%f,%f,%f' % (r/255., g/255., b/255., a)

    for (name, src, dest) in [
        ('solid', (255, 255, 0, 1.0), (0, 255, 255, 1.0)),
        ('transparent', (0, 0, 255, 0.75), (0, 255, 0, 0.5)),
            # catches the atop, xor and lighter bugs in Opera 9.10
    ]:
        for op, FA_code, FB_code in ops:
            expected = calc_output(src, dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 ==~ %s +/- 5;
    t.done();
    """ % (dest, op, src, to_test(expected)),
            } )

    for (name, src, dest) in [ ('image', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            expected = calc_output(src, dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'images': [ 'yellow75.png' ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow75.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        return createImageBitmap(response).then(bitmap => {
            ctx.drawImage(bitmap, 0, 0);
            @assert pixel 50,25 ==~ %s +/- 5;
        });
    }).then(t_pass, t_fail);
    """ % (dest, op, to_test(expected)),
            } )

    for (name, src, dest) in [ ('canvas', (255, 255, 0, 0.75), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            expected = calc_output(src, dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'images': [ 'yellow75.png' ],
                'code': """
    var offscreenCanvas2 = new OffscreenCanvas(canvas.width, canvas.height);
    var ctx2 = offscreenCanvas2.getContext('2d');
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow75.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        return createImageBitmap(response).then(bitmap => {
            ctx2.drawImage(bitmap, 0, 0);
            ctx.fillStyle = 'rgba%s';
            ctx.fillRect(0, 0, 100, 50);
            ctx.globalCompositeOperation = '%s';
            ctx.drawImage(offscreenCanvas2, 0, 0);
            @assert pixel 50,25 ==~ %s +/- 5;
        });
    }).then(t_pass, t_fail);
    """ % (dest, op, to_test(expected)),
            } )

    for (name, src, dest) in [ ('uncovered.fill', (0, 0, 255, 0.75), (0, 255, 0, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            new_test = {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    ctx.fillStyle = 'rgba%s';
    ctx.translate(0, 25);
    ctx.fillRect(0, 50, 100, 50);
    @assert pixel 50,25 ==~ %s +/- 5;
    t.done();
    """ % (dest, op, src, to_test(expected0)),
            }
            if op == 'destination-in':
              new_test['timeout'] = 'long'
            tests.append(new_test)

    for (name, src, dest) in [ ('uncovered.image', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'drawImage() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
                'images': [ 'yellow.png' ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        return createImageBitmap(response).then(bitmap => {
            ctx.drawImage(bitmap, 40, 40, 10, 10, 40, 50, 10, 10);
            @assert pixel 15,15 ==~ %s +/- 5;
            @assert pixel 50,25 ==~ %s +/- 5;
        });
    }).then(t_pass, t_fail);
    """ % (dest, op, to_test(expected0), to_test(expected0)),
            } )

    for (name, src, dest) in [ ('uncovered.nocontext', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'drawImage() of a canvas with no context draws pixels as (0,0,0,0), and does not leave the pixels unchanged.',
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var offscreenCanvas2 = new OffscreenCanvas(100, 50);
    ctx.drawImage(offscreenCanvas2, 0, 0);
    @assert pixel 50,25 ==~ %s +/- 5;
    t.done();
    """ % (dest, op, to_test(expected0)),
            } )

    for (name, src, dest) in [ ('uncovered.pattern', (255, 255, 0, 1.0), (0, 255, 255, 0.5)) ]:
        for op, FA_code, FB_code in ops:
            if op not in ops_trans: continue
            expected0 = calc_output((0,0,0,0.0), dest, FA_code, FB_code)
            tests.append( {
                'name': '2d.composite.%s.%s' % (name, op),
                'desc': 'Pattern fill() draws pixels not covered by the source object as (0,0,0,0), and does not leave the pixels unchanged.',
                'images': [ 'yellow.png' ],
                'code': """
    ctx.fillStyle = 'rgba%s';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    var promise = new Promise(function(resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", '/images/yellow.png');
        xhr.responseType = 'blob';
        xhr.send();
        xhr.onload = function() {
            resolve(xhr.response);
        };
    });
    promise.then(function(response) {
        return createImageBitmap(response).then(bitmap => {
            ctx.fillStyle = ctx.createPattern(bitmap, 'no-repeat');
            ctx.fillRect(0, 50, 100, 50);
            @assert pixel 50,25 ==~ %s +/- 5;
        });
    }).then(t_pass, t_fail);
    """ % (dest, op, to_test(expected0)),
            } )

    for op, FA_code, FB_code in ops:
        tests.append( {
            'name': '2d.composite.clip.%s' % (op),
            'desc': 'fill() does not affect pixels outside the clip region.',
            'code': """
    ctx.fillStyle = '#0f0';
    ctx.fillRect(0, 0, 100, 50);
    ctx.globalCompositeOperation = '%s';
    ctx.rect(-20, -20, 10, 10);
    ctx.clip();
    ctx.fillStyle = '#f00';
    ctx.fillRect(0, 0, 50, 50);
    @assert pixel 25,25 == 0,255,0,255;
    @assert pixel 75,25 == 0,255,0,255;
    t.done();
    """ % (op),
        } )

- meta: |
    # Color parsing tests

    # Try most of the CSS3 Color <color> values - http://www.w3.org/TR/css3-color/#colorunits
    big_float = '1' + ('0' * 39)
    big_double = '1' + ('0' * 310)
    for name, string, r,g,b,a, notes in [
        ('html4', 'limE', 0,255,0,255, ""),
        ('hex3', '#0f0', 0,255,0,255, ""),
        ('hex4', '#0f0f', 0,255,0,255, ""),
        ('hex6', '#00fF00', 0,255,0,255, ""),
        ('hex8', '#00ff00ff', 0,255,0,255, ""),
        ('rgb-num', 'rgb(0,255,0)', 0,255,0,255, ""),
        ('rgb-clamp-1', 'rgb(-1000, 1000, -1000)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
        ('rgb-clamp-2', 'rgb(-200%, 200%, -200%)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
        ('rgb-clamp-3', 'rgb(-2147483649, 4294967298, -18446744073709551619)', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
        ('rgb-clamp-4', 'rgb(-'+big_float+', '+big_float+', -'+big_float+')', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
        ('rgb-clamp-5', 'rgb(-'+big_double+', '+big_double+', -'+big_double+')', 0,255,0,255, 'Assumes colors are clamped to [0,255].'),
        ('rgb-percent', 'rgb(0% ,100% ,0%)', 0,255,0,255, 'CSS3 Color says "The integer value 255 corresponds to 100%". (In particular, it is not 254...)'),
        ('rgb-eof', 'rgb(0, 255, 0', 0,255,0,255, ""), # see CSS2.1 4.2 "Unexpected end of style sheet"
        ('rgba-solid-1', 'rgba(  0  ,  255  ,  0  ,  1  )', 0,255,0,255, ""),
        ('rgba-solid-2', 'rgba(  0  ,  255  ,  0  ,  1.0  )', 0,255,0,255, ""),
        ('rgba-solid-3', 'rgba(  0  ,  255  ,  0  , +1  )', 0,255,0,255, ""),
        ('rgba-solid-4', 'rgba( -0  ,  255  , +0  ,  1  )', 0,255,0,255, ""),
        ('rgba-num-1', 'rgba(  0  ,  255  ,  0  ,  .499  )', 0,255,0,127, ""),
        ('rgba-num-2', 'rgba(  0  ,  255  ,  0  ,  0.499  )', 0,255,0,127, ""),
        ('rgba-percent', 'rgba(0%,100%,0%,0.499)', 0,255,0,127, ""), # 0.499*255 rounds to 127, both down and nearest, so it should be safe
        ('rgba-clamp-1', 'rgba(0, 255, 0, -2)', 0,0,0,0, ""),
        ('rgba-clamp-2', 'rgba(0, 255, 0, 2)', 0,255,0,255, ""),
        ('rgba-eof', 'rgba(0, 255, 0, 1', 0,255,0,255, ""),
        ('transparent-1', 'transparent', 0,0,0,0, ""),
        ('transparent-2', 'TrAnSpArEnT', 0,0,0,0, ""),
        ('hsl-1', 'hsl(120, 100%, 50%)', 0,255,0,255, ""),
        ('hsl-2', 'hsl( -240 , 100% , 50% )', 0,255,0,255, ""),
        ('hsl-3', 'hsl(360120, 100%, 50%)', 0,255,0,255, ""),
        ('hsl-4', 'hsl(-360240, 100%, 50%)', 0,255,0,255, ""),
        ('hsl-5', 'hsl(120.0, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('hsl-6', 'hsl(+120, +100%, +50%)', 0,255,0,255, ""),
        ('hsl-clamp-1', 'hsl(120, 200%, 50%)', 0,255,0,255, ""),
        ('hsl-clamp-2', 'hsl(120, -200%, 49.9%)', 127,127,127,255, ""),
        ('hsl-clamp-3', 'hsl(120, 100%, 200%)', 255,255,255,255, ""),
        ('hsl-clamp-4', 'hsl(120, 100%, -200%)', 0,0,0,255, ""),
        ('hsla-1', 'hsla(120, 100%, 50%, 0.499)', 0,255,0,127, ""),
        ('hsla-2', 'hsla( 120.0 , 100.0% , 50.0% , 1 )', 0,255,0,255, ""),
        ('hsla-clamp-1', 'hsla(120, 200%, 50%, 1)', 0,255,0,255, ""),
        ('hsla-clamp-2', 'hsla(120, -200%, 49.9%, 1)', 127,127,127,255, ""),
        ('hsla-clamp-3', 'hsla(120, 100%, 200%, 1)', 255,255,255,255, ""),
        ('hsla-clamp-4', 'hsla(120, 100%, -200%, 1)', 0,0,0,255, ""),
        ('hsla-clamp-5', 'hsla(120, 100%, 50%, 2)', 0,255,0,255, ""),
        ('hsla-clamp-6', 'hsla(120, 100%, 0%, -2)', 0,0,0,0, ""),
        ('svg-1', 'gray', 128,128,128,255, ""),
        ('svg-2', 'grey', 128,128,128,255, ""),
        # css-color-4 rgb() color function
        #   https://drafts.csswg.org/css-color/#numeric-rgb
        ('css-color-4-rgb-1', 'rgb(0, 255.0, 0)', 0,255,0,255, ""),
        ('css-color-4-rgb-2', 'rgb(0, 255, 0, 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgb-3', 'rgb(0, 255, 0, 20%)', 0,255,0,51, ""),
        ('css-color-4-rgb-4', 'rgb(0 255 0)', 0,255,0,255, ""),
        ('css-color-4-rgb-5', 'rgb(0 255 0 / 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgb-6', 'rgb(0 255 0 / 20%)', 0,255,0,51, ""),
        ('css-color-4-rgba-1', 'rgba(0, 255.0, 0)', 0,255,0,255, ""),
        ('css-color-4-rgba-2', 'rgba(0, 255, 0, 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgba-3', 'rgba(0, 255, 0, 20%)', 0,255,0,51, ""),
        ('css-color-4-rgba-4', 'rgba(0 255 0)', 0,255,0,255, ""),
        ('css-color-4-rgba-5', 'rgba(0 255 0 / 0.2)', 0,255,0,51, ""),
        ('css-color-4-rgba-6', 'rgba(0 255 0 / 20%)', 0,255,0,51, ""),
        # css-color-4 hsl() color function
        #   https://drafts.csswg.org/css-color/#the-hsl-notation
        ('css-color-4-hsl-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsl-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsl-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
        ('css-color-4-hsl-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsl-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsl-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-1', 'hsl(120 100.0% 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-2', 'hsl(120 100.0% 50.0% / 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsla-3', 'hsl(120.0, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsla-4', 'hsl(120.0, 100.0%, 50.0%, 20%)', 0,255,0,51, ""),
        ('css-color-4-hsla-5', 'hsl(120deg, 100.0%, 50.0%, 0.2)', 0,255,0,51, ""),
        ('css-color-4-hsla-6', 'hsl(120deg, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-7', 'hsl(133.33333333grad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-8', 'hsl(2.0943951024rad, 100.0%, 50.0%)', 0,255,0,255, ""),
        ('css-color-4-hsla-9', 'hsl(0.3333333333turn, 100.0%, 50.0%)', 0,255,0,255, ""),
        # currentColor is handled later
    ]:
        # TODO: test by retrieving fillStyle, instead of actually drawing?
        # TODO: test strokeStyle, shadowColor in the same way
        test = {
            'name': '2d.fillStyle.parse.%s' % name,
            'notes': notes,
            'code': """
    ctx.fillStyle = '#f00';
    ctx.fillStyle = '%s';
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == %d,%d,%d,%d;
    t.done();
    """ % (string, r,g,b,a),
        }
        tests.append(test)

    # Also test that invalid colors are ignored
    for name, string in [
        ('hex1', '#f'),
        ('hex2', '#f0'),
        ('hex3', '#g00'),
        ('hex4', '#fg00'),
        ('hex5', '#ff000'),
        ('hex6', '#fg0000'),
        ('hex7', '#ff0000f'),
        ('hex8', '#fg0000ff'),
        ('rgb-1', 'rgb(255.0, 0, 0,)'),
        ('rgb-2', 'rgb(100%, 0, 0)'),
        ('rgb-3', 'rgb(255, - 1, 0)'),
        ('rgba-1', 'rgba(100%, 0, 0, 1)'),
        ('rgba-2', 'rgba(255, 0, 0, 1. 0)'),
        ('rgba-3', 'rgba(255, 0, 0, 1.)'),
        ('rgba-4', 'rgba(255, 0, 0, '),
        ('rgba-5', 'rgba(255, 0, 0, 1,)'),
        ('hsl-1', 'hsl(0%, 100%, 50%)'),
        ('hsl-2', 'hsl(z, 100%, 50%)'),
        ('hsl-3', 'hsl(0, 0, 50%)'),
        ('hsl-4', 'hsl(0, 100%, 0)'),
        ('hsl-5', 'hsl(0, 100.%, 50%)'),
        ('hsl-6', 'hsl(0, 100%, 50%,)'),
        ('hsla-1', 'hsla(0%, 100%, 50%, 1)'),
        ('hsla-2', 'hsla(0, 0, 50%, 1)'),
        ('hsla-3', 'hsla(0, 0, 50%, 1,)'),
        ('name-1', 'darkbrown'),
        ('name-2', 'firebrick1'),
        ('name-3', 'red blue'),
        ('name-4', '"red"'),
        ('name-5', '"red'),
        # css-color-4 color function
        #   comma and comma-less expressions should not mix together.
        ('css-color-4-rgb-1', 'rgb(255, 0, 0 / 1)'),
        ('css-color-4-rgb-2', 'rgb(255 0 0, 1)'),
        ('css-color-4-rgb-3', 'rgb(255, 0 0)'),
        ('css-color-4-rgba-1', 'rgba(255, 0, 0 / 1)'),
        ('css-color-4-rgba-2', 'rgba(255 0 0, 1)'),
        ('css-color-4-rgba-3', 'rgba(255, 0 0)'),
        ('css-color-4-hsl-1', 'hsl(0, 100%, 50% / 1)'),
        ('css-color-4-hsl-2', 'hsl(0 100% 50%, 1)'),
        ('css-color-4-hsl-3', 'hsl(0, 100% 50%)'),
        ('css-color-4-hsla-1', 'hsla(0, 100%, 50% / 1)'),
        ('css-color-4-hsla-2', 'hsla(0 100% 50%, 1)'),
        ('css-color-4-hsla-3', 'hsla(0, 100% 50%)'),
        #  trailing slash
        ('css-color-4-rgb-4', 'rgb(0 0 0 /)'),
        ('css-color-4-rgb-5', 'rgb(0, 0, 0 /)'),
        ('css-color-4-hsl-4', 'hsl(0 100% 50% /)'),
        ('css-color-4-hsl-5', 'hsl(0, 100%, 50% /)'),
    ]:
        test = {
            'name': '2d.fillStyle.parse.invalid.%s' % name,
            'code': """
    ctx.fillStyle = '#0f0';
    try { ctx.fillStyle = '%s'; } catch (e) { } // this shouldn't throw, but it shouldn't matter here if it does
    ctx.fillRect(0, 0, 100, 50);
    @assert pixel 50,25 == 0,255,0,255;
    t.done();
    """ % string,
        }
        tests.append(test)

    # Some can't have positive tests, only negative tests, because we don't know what color they're meant to be
    for name, string in [
        ('system', 'ThreeDDarkShadow'),
        #('flavor', 'flavor'), # removed from latest CSS3 Color drafts
    ]:
        test = {
            'name': '2d.fillStyle.parse.%s' % name,
            'code': """
    ctx.fillStyle = '#f00';
    ctx.fillStyle = '%s';
    @assert ctx.fillStyle =~ /^#(?!(FF0000|ff0000|f00)$)/; // test that it's not red
    t.done();
    """ % (string,),
        }
        tests.append(test)

- meta: |
    cases = [
        ("zero", "0", 0),
        ("empty", "", 0),
        ("onlyspace", "  ", 0),
        ("space", "  100", 100),
        ("whitespace", "\t\f100", 100),
        ("plus", "+100", 100),
        ("minus", "-100", "exception"),
        ("octal", "0100", 100),
        ("hex", "0x100", 0x100),
        ("exp", "100e1", 100e1),
        ("decimal", "100.999", 100),
        ("percent", "100%", "exception"),
        ("em", "100em", "exception"),
        ("junk", "#!?", "exception"),
        ("trailingjunk", "100#!?", "exception"),
    ]
    def gen(name, string, exp, code):
        if exp is None:
            code += "canvas.width = '%s';\ncanvas.height = '%s';\n" % (string, string)
            code += "@assert canvas.width === 100;\n@assert canvas.height === 50;\n"
            expected = None
        elif exp == "exception":
            code += "@assert throws TypeError canvas.width = '%s';\n" % string
            expected = None
        else:
            code += "canvas.width = '%s';\ncanvas.height = '%s';\n" % (string, string)
            code += "@assert canvas.width === %s;\n@assert canvas.height === %s;\n" % (exp, exp)
            expected = None

        code += "t.done();\n"

        if exp == 0:
            expected = None # can't generate zero-sized PNGs for the expected image

        return code, expected

    for name, string, exp in cases:
        code = ""
        code, expected = gen(name, string, exp, code)
        tests.append( {
            "name": "2d.canvas.host.size.attributes.parse.%s" % name,
            "desc": "Parsing of non-negative integers",
            "code": code,
        } )