diff -r efd9c589177a -r c0b4a8b5a012 toolkit/exemples/couple/javascript/d3/test/scale/log-test.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/exemples/couple/javascript/d3/test/scale/log-test.js	Thu Apr 10 14:20:23 2014 +0200
@@ -0,0 +1,257 @@
+require("../env");
+require("../../d3");
+
+var vows = require("vows"),
+    assert = require("assert");
+
+var suite = vows.describe("d3.scale.log");
+
+suite.addBatch({
+  "log": {
+    topic: function() {
+      return d3.scale.log;
+    },
+
+    "domain": {
+      "defaults to [1, 10]": function(log) {
+        var x = log();
+        assert.deepEqual(x.domain(), [1, 10]);
+        assert.inDelta(x(5), 0.69897, 1e-6);
+      },
+      "coerces domain values to numbers": function(log) {
+        var x = log().domain([new Date(1990, 0, 1), new Date(1991, 0, 1)]);
+        assert.equal(typeof x.domain()[0], "number");
+        assert.equal(typeof x.domain()[1], "number");
+        assert.inDelta(x(new Date(1989, 09, 20)), -.2, 1e-2);
+        assert.inDelta(x(new Date(1990, 00, 01)), 0, 1e-2);
+        assert.inDelta(x(new Date(1990, 02, 15)), .2, 1e-2);
+        assert.inDelta(x(new Date(1990, 04, 27)), .4, 1e-2);
+        assert.inDelta(x(new Date(1991, 00, 01)), 1, 1e-2);
+        assert.inDelta(x(new Date(1991, 02, 15)), 1.2, 1e-2);
+        var x = log().domain(["1", "10"]);
+        assert.equal(typeof x.domain()[0], "number");
+        assert.equal(typeof x.domain()[1], "number");
+        assert.inDelta(x(5), 0.69897, 1e-6);
+        var x = log().domain([new Number(1), new Number(10)]);
+        assert.equal(typeof x.domain()[0], "number");
+        assert.equal(typeof x.domain()[1], "number");
+        assert.inDelta(x(5), 0.69897, 1e-6);
+      },
+      "can specify negative domain values": function(log) {
+        var x = log().domain([-100, -1]);
+        assert.deepEqual(x.ticks().map(x.tickFormat()), [
+          "−1e+2",
+          "−9e+1", "−8e+1", "−7e+1", "−6e+1", "−5e+1", "−4e+1", "−3e+1", "−2e+1", "−1e+1",
+          "−9e+0", "−8e+0", "−7e+0", "−6e+0", "−5e+0", "−4e+0", "−3e+0", "−2e+0", "−1e+0"
+        ]);
+        assert.inDelta(x(-50), 0.150515, 1e-6);
+      },
+      "can specify a polylog domain and range": function(log) {
+        var x = log().domain([.1, 1, 100]).range(["red", "white", "green"]);
+        assert.equal(x(.5), "#ffb2b2");
+        assert.equal(x(50), "#269326");
+        assert.equal(x(75), "#108810");
+      }
+    },
+
+    "range": {
+      "defaults to [0, 1]": function(log) {
+        var x = log();
+        assert.deepEqual(x.range(), [0, 1]);
+        assert.inDelta(x.invert(.5), 3.162278, 1e-6);
+      },
+      "does not coerce range to numbers": function(log) {
+        var x = log().range(["0", "2"]);
+        assert.equal(typeof x.range()[0], "string");
+        assert.equal(typeof x.range()[1], "string");
+      },
+      "can specify range values as colors": function(log) {
+        var x = log().range(["red", "blue"]);
+        assert.equal(x(5), "#4d00b2");
+        var x = log().range(["#ff0000", "#0000ff"]);
+        assert.equal(x(5), "#4d00b2");
+        var x = log().range(["#f00", "#00f"]);
+        assert.equal(x(5), "#4d00b2");
+        var x = log().range([d3.rgb(255,0,0), d3.hsl(240,1,.5)]);
+        assert.equal(x(5), "#4d00b2");
+        var x = log().range(["hsl(0,100%,50%)", "hsl(240,100%,50%)"]);
+        assert.equal(x(5), "#4d00b2");
+      },
+      "can specify range values as arrays or objects": function(log) {
+        var x = log().range([{color: "red"}, {color: "blue"}]);
+        assert.deepEqual(x(5), {color: "#4d00b2"});
+        var x = log().range([["red"], ["blue"]]);
+        assert.deepEqual(x(5), ["#4d00b2"]);
+      }
+    },
+
+    "interpolate": {
+      "defaults to d3.interpolate": function(log) {
+        var x = log().range(["red", "blue"]);
+        assert.equal(x.interpolate(), d3.interpolate);
+        assert.equal(x(5), "#4d00b2");
+      },
+      "can specify a custom interpolator": function(log) {
+        var x = log().range(["red", "blue"]).interpolate(d3.interpolateHsl);
+        assert.equal(x(5), "#00ffcb");
+      }
+    },
+
+    "clamp": {
+      "defaults to false": function(log) {
+        var x = log();
+        assert.isFalse(x.clamp());
+        assert.inDelta(x(.5), -0.3010299, 1e-6);
+        assert.inDelta(x(15), 1.1760913, 1e-6);
+      },
+      "can clamp to the domain": function(log) {
+        var x = log().clamp(true);
+        assert.inDelta(x(.5), 0, 1e-6);
+        assert.inDelta(x(5), 0.69897, 1e-6);
+        assert.inDelta(x(15), 1, 1e-6);
+        var x = log().domain([10, 1]).clamp(true);
+        assert.inDelta(x(.5), 1, 1e-6);
+        assert.inDelta(x(5), 0.30103, 1e-6);
+        assert.inDelta(x(15), 0, 1e-6);
+      }
+    },
+
+    "maps a number to a number": function(log) {
+      var x = log().domain([1, 2]);
+      assert.inDelta(x(.5), -1, 1e-6);
+      assert.inDelta(x(1), 0, 1e-6);
+      assert.inDelta(x(1.5), 0.5849625, 1e-6);
+      assert.inDelta(x(2), 1, 1e-6);
+      assert.inDelta(x(2.5), 1.3219281, 1e-6);
+    },
+
+    "invert": {
+      "maps a number to a number": function(log) {
+        var x = log().domain([1, 2]);
+        assert.inDelta(x.invert(-1), .5, 1e-6);
+        assert.inDelta(x.invert(0), 1, 1e-6);
+        assert.inDelta(x.invert(0.5849625), 1.5, 1e-6);
+        assert.inDelta(x.invert(1), 2, 1e-6);
+        assert.inDelta(x.invert(1.3219281), 2.5, 1e-6);
+      },
+      "coerces range value to number on invert": function(log) {
+        var x = log().range(["0", "2"]);
+        assert.inDelta(x.invert("1"), 3.1622777, 1e-6);
+        var x = log().range([new Date(1990, 0, 1), new Date(1991, 0, 1)]);
+        assert.inDelta(x.invert(new Date(1990, 6, 2, 13)), 3.1622777, 1e-6);
+        var x = log().range(["#000", "#fff"]);
+        assert.isNaN(x.invert("#999"));
+      }
+    },
+
+    "ticks": {
+      "can generate ticks": function(log) {
+        var x = log();
+        assert.deepEqual(x.ticks().map(x.tickFormat()), [
+          "1e+0", "2e+0", "3e+0", "4e+0", "5e+0", "6e+0", "7e+0", "8e+0", "9e+0",
+          "1e+1"
+        ]);
+        var x = log().domain([100, 1]);
+        assert.deepEqual(x.ticks().map(x.tickFormat()), [
+          "1e+0", "2e+0", "3e+0", "4e+0", "5e+0", "6e+0", "7e+0", "8e+0", "9e+0",
+          "1e+1", "2e+1", "3e+1", "4e+1", "5e+1", "6e+1", "7e+1", "8e+1", "9e+1",
+          "1e+2"
+        ]);
+      },
+      "can generate fewer ticks, if desired": function(log) {
+        var x = log();
+        assert.deepEqual(x.ticks().map(x.tickFormat(5)), [
+          "1e+0", "2e+0", "3e+0", "4e+0", "", "", "", "", "",
+          "1e+1"
+        ]);
+        var x = log().domain([100, 1]);
+        assert.deepEqual(x.ticks().map(x.tickFormat(10)), [
+          "1e+0", "2e+0", "3e+0", "4e+0", "5e+0", "", "", "", "",
+          "1e+1", "2e+1", "3e+1", "4e+1", "5e+1", "", "", "", "",
+          "1e+2"
+        ]);
+      },
+      "can override the tick format": function(log) {
+        var x = log().domain([1000, 1]);
+        assert.deepEqual(x.ticks().map(x.tickFormat(10, d3.format("+,d"))), [
+          "+1", "+2", "+3", "", "", "", "", "", "",
+          "+10", "+20", "+30", "", "", "", "", "", "",
+          "+100", "+200", "+300", "", "", "", "", "", "",
+          "+1,000"
+        ]);
+      }
+    },
+
+    "nice": {
+      "can nice the domain, extending it to powers of ten": function(log) {
+        var x = log().domain([1.1, 10.9]).nice();
+        assert.deepEqual(x.domain(), [1, 100]);
+        var x = log().domain([10.9, 1.1]).nice();
+        assert.deepEqual(x.domain(), [100, 1]);
+        var x = log().domain([.7, 11.001]).nice();
+        assert.deepEqual(x.domain(), [.1, 100]);
+        var x = log().domain([123.1, 6.7]).nice();
+        assert.deepEqual(x.domain(), [1000, 1]);
+        var x = log().domain([.01, .49]).nice();
+        assert.deepEqual(x.domain(), [.01, 1]);
+        var x = log().domain([0, 0]).nice();
+        assert.deepEqual(x.domain(), [0, 0]);
+        var x = log().domain([.5, .5]).nice();
+        assert.inDelta(x.domain(), [.5, .5], 1e-6);
+      },
+      "nicing a polylog domain only affects the extent": function(log) {
+        var x = log().domain([1.1, 1.5, 10.9]).nice();
+        assert.deepEqual(x.domain(), [1, 1.5, 100]);
+        var x = log().domain([-123.1, -1.5, -.5]).nice();
+        assert.deepEqual(x.domain(), [-1000, -1.5, -.1]);
+      }
+    },
+
+    "copy": {
+      "changes to the domain are isolated": function(log) {
+        var x = log(), y = x.copy();
+        x.domain([10, 100]);
+        assert.deepEqual(y.domain(), [1, 10]);
+        assert.equal(x(10), 0);
+        assert.equal(y(1), 0);
+        y.domain([100, 1000]);
+        assert.equal(x(100), 1);
+        assert.equal(y(100), 0);
+        assert.deepEqual(x.domain(), [10, 100]);
+        assert.deepEqual(y.domain().map(Math.round), [100, 1000]);
+      },
+      "changes to the range are isolated": function(log) {
+        var x = log(), y = x.copy();
+        x.range([1, 2]);
+        assert.equal(x.invert(1), 1);
+        assert.equal(y.invert(1), 10);
+        assert.deepEqual(y.range(), [0, 1]);
+        y.range([2, 3]);
+        assert.equal(x.invert(2), 10);
+        assert.equal(y.invert(2), 1);
+        assert.deepEqual(x.range(), [1, 2]);
+        assert.deepEqual(y.range(), [2, 3]);
+      },
+      "changes to the interpolator are isolated": function(log) {
+        var x = log().range(["red", "blue"]), y = x.copy();
+        x.interpolate(d3.interpolateHsl);
+        assert.equal(x(5), "#00ffcb");
+        assert.equal(y(5), "#4d00b2");
+        assert.equal(y.interpolate(), d3.interpolate);
+      },
+      "changes to clamping are isolated": function(log) {
+        var x = log().clamp(true), y = x.copy();
+        x.clamp(false);
+        assert.inDelta(x(.5), -0.30103, 1e-6);
+        assert.equal(y(.5), 0);
+        assert.isTrue(y.clamp());
+        y.clamp(false);
+        assert.inDelta(x(20), 1.30103, 1e-6);
+        assert.inDelta(y(20), 1.30103, 1e-6);
+        assert.isFalse(x.clamp());
+      }
+    }
+  }
+});
+
+suite.export(module);