var vows = require(“vows”),
_ = require("../../"), load = require("../load"), assert = require("../assert");
var suite = vows.describe(“d3.hcl”);
suite.addBatch({
"hcl": { topic: load("color/hcl").expression("d3.hcl"), "converts string channel values to numbers": function(hcl) { assert.hclEqual(hcl("50", "-4", "32"), 50, -4, 32); }, "converts null channel values to zero": function(hcl) { assert.hclEqual(hcl(null, null, null), 0, 0, 0); }, "exposes h, c and l properties": function(hcl) { var color = hcl(50, -4, 32); assert.equal(color.h, 50); assert.equal(color.c, -4); assert.equal(color.l, 32); }, "changing h, c or l affects the string format": function(hcl) { var color = hcl(50, -4, 32); assert.equal(color + "", "#444d50"); color.h++; assert.equal(color + "", "#444d50"); color.c++; assert.equal(color + "", "#464c4f"); color.l++; assert.equal(color + "", "#494f51"); }, "parses hexadecimal shorthand format (e.g., \"#abc\")": function(hcl) { assert.hclEqual(hcl("#abc"), -102.28223831811077, 10.774886733325554, 75.10497524893663); }, "parses hexadecimal format (e.g., \"#abcdef\")": function(hcl) { assert.hclEqual(hcl("#abcdef"), -100.15785184209284, 20.768234621934273, 81.04386565274363); }, "parses HSL format (e.g., \"hsl(210, 64%, 13%)\")": function(hcl) { assert.hclEqual(hcl("hsl(210, 64.7058%, 13.33333%)"), -89.58282792342067, 16.833655998102003, 12.65624852526134); }, "parses color names (e.g., \"moccasin\")": function(hcl) { assert.hclEqual(hcl("moccasin"), 84.71288921124494, 26.472460854104156, 91.72317744746022); }, "parses and converts RGB format (e.g., \"rgb(102, 102, 0)\")": function(hcl) { assert.hclEqual(hcl("rgb(102, 102, 0)"), 102.85124420310271, 49.44871600399321, 41.73251953866431); }, "can convert from RGB": function(hcl) { assert.hclEqual(hcl(_.rgb(12, 34, 56)), -89.58282792342067, 16.833655998102003, 12.65624852526134); }, "can convert from HSL": function(hcl) { assert.hclEqual(hcl(hcl(20, .8, .3)), 20, 0.8, 0.3); }, "can convert to RGB": function(hcl) { assert.rgbEqual(hcl("steelblue").rgb(), 70, 130, 180); }, "can derive a brighter color": function(hcl) { assert.hclEqual(hcl("steelblue").brighter(), -97.21873224090723, 32.44906314974561, 70.46551718768575); assert.hclEqual(hcl("steelblue").brighter(.5), -97.21873224090723, 32.44906314974561, 61.46551718768575); }, "can derive a darker color": function(hcl) { assert.hclEqual(hcl("lightsteelblue").darker(), -94.8160116310511, 15.26488988314746, 60.45157936968134); assert.hclEqual(hcl("lightsteelblue").darker(.5), -94.8160116310511, 15.26488988314746, 69.45157936968134); }, "string coercion returns RGB format": function(hcl) { assert.strictEqual(hcl("hsl(60, 100%, 20%)") + "", "#666600"); assert.strictEqual(hcl(hcl(60, -4, 32)) + "", "#454c51"); }, "roundtrip to HSL is idempotent": function(hcl) { assert.deepEqual(_.hsl(hcl("steelblue")), _.hsl("steelblue")); }, "roundtrip to RGB is idempotent": function(hcl) { assert.deepEqual(_.rgb(hcl("steelblue")), _.rgb("steelblue")); }, "roundtrip to Lab is idempotent": function(hcl) { assert.deepEqual(_.lab(hcl("steelblue")), _.lab("steelblue")); }, "h is defined for non-black grayscale colors (because of the color profile)": function(hcl) { assert.inDelta(hcl("#ccc").h, 158.1986, 1e-3); assert.inDelta(hcl("gray").h, 158.1986, 1e-3); assert.inDelta(hcl(_.rgb("gray")).h, 158.1986, 1e-3); assert.inDelta(hcl("#fff").h, 158.1986, 1e-3); assert.inDelta(hcl("white").h, 158.1986, 1e-3); assert.inDelta(hcl(_.rgb("white")).h, 158.1986, 1e-3); }, "h is preserved when explicitly specified, even for black": function(hcl) { assert.strictEqual(hcl(0, 0, 0).h, 0); assert.strictEqual(hcl(42, 0, 0).h, 42); assert.strictEqual(hcl(118, 0, 0).h, 118); }, "h is undefined when not explicitly specified for black": function(hcl) { assert.isNaN(hcl("#000").h); assert.isNaN(hcl("black").h); assert.isNaN(hcl(_.rgb("black")).h); }, "c is preserved when explicitly specified, even for black": function(hcl) { assert.strictEqual(hcl(0, 0, 0).c, 0); assert.strictEqual(hcl(0, .42, 0).c, .42); assert.strictEqual(hcl(0, 1, 0).c, 1); }, "c is undefined when not explicitly specified for black": function(hcl) { assert.isNaN(hcl("#000").c); assert.isNaN(hcl("black").c); assert.isNaN(hcl(_.rgb("black")).c); }, "can convert black (with undefined hue and chroma) to RGB": function(hcl) { assert.strictEqual(hcl(NaN, NaN, 0) + "", "#000000"); } }
});
suite.export(module);