1 require("../env");

     2 require("../../d3");

     3 

     4 var vows = require("vows"),

     5     assert = require("assert");

     6 

     7 var suite = vows.describe("d3.svg.symbol");

     8 

     9 suite.addBatch({

    10   "symbol": {

    11     topic: function() {

    12       return d3.svg.symbol;

    13     },

    14     "default symbol is a fixed-size circle": function(symbol) {

    15       var a = symbol();

    16       assert.pathEqual(a(), "M0,4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,-4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,4.51351666838205Z");

    17     },

    18     "size accessor specifies shape area in square pixels": function(symbol) {

    19       var a = symbol().size(Number);

    20       assert.pathEqual(a(0), "M0,0A0,0 0 1,1 0,0A0,0 0 1,1 0,0Z");

    21       assert.pathEqual(a(Math.PI), "M0,1A1,1 0 1,1 0,-1A1,1 0 1,1 0,1Z");

    22       assert.pathEqual(a(4 * Math.PI), "M0,2A2,2 0 1,1 0,-2A2,2 0 1,1 0,2Z");

    23     },

    24     "size accessor is passed data and index": function(symbol) {

    25       var a = symbol().size(function(d, i) { return d.z * 2 + i; });

    26       assert.pathEqual(a({z: 0}, 0), "M0,0A0,0 0 1,1 0,0A0,0 0 1,1 0,0Z");

    27       assert.pathEqual(a({z: Math.PI}, 1), "M0,1.5225997130512636A1.5225997130512636,1.5225997130512636 0 1,1 0,-1.5225997130512636A1.5225997130512636,1.5225997130512636 0 1,1 0,1.5225997130512636Z");

    28       assert.pathEqual(a({z: 4 * Math.PI}, 2), "M0,2.938812646693828A2.938812646693828,2.938812646693828 0 1,1 0,-2.938812646693828A2.938812646693828,2.938812646693828 0 1,1 0,2.938812646693828Z");

    29     },

    30     "supports cross symbol type": function(symbol) {

    31       var a = symbol().type("cross").size(Number);

    32       assert.pathEqual(a(0), "M0,0H0V0H0V0H0V0H0V0H0V0H0Z");

    33       assert.pathEqual(a(20), "M-3,-1H-1V-3H1V-1H3V1H1V3H-1V1H-3Z");

    34     },

    35     "supports diamond symbol type": function(symbol) {

    36       var a = symbol().type("diamond").size(Number);

    37       assert.pathEqual(a(0), "M0,0L0,0 0,0 0,0Z");

    38       assert.pathEqual(a(10), "M0,-2.9428309563827124L1.6990442448471224,0 0,2.9428309563827124 -1.6990442448471224,0Z");

    39     },

    40     "supports square symbol type": function(symbol) {

    41       var a = symbol().type("square").size(Number);

    42       assert.pathEqual(a(0), "M0,0L0,0 0,0 0,0Z");

    43       assert.pathEqual(a(4), "M-1,-1L1,-1 1,1 -1,1Z");

    44       assert.pathEqual(a(16), "M-2,-2L2,-2 2,2 -2,2Z");

    45     },

    46     "supports triangle-down symbol type": function(symbol) {

    47       var a = symbol().type("triangle-down").size(Number);

    48       assert.pathEqual(a(0), "M0,0L0,0 0,0Z");

    49       assert.pathEqual(a(10), "M0,2.0808957251439084L2.4028114141347543,-2.0808957251439084 -2.4028114141347543,-2.0808957251439084Z");

    50     },

    51     "supports triangle-up symbol type": function(symbol) {

    52       var a = symbol().type("triangle-up").size(Number);

    53       assert.pathEqual(a(0), "M0,0L0,0 0,0Z");

    54       assert.pathEqual(a(10), "M0,-2.0808957251439084L2.4028114141347543,2.0808957251439084 -2.4028114141347543,2.0808957251439084Z");

    55     },

    56     "unknown symbol type defaults to circle": function(symbol) {

    57       var a = symbol().type(String);

    58       assert.pathEqual(a(), "M0,4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,-4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,4.51351666838205Z");

    59       assert.pathEqual(a("invalid"), "M0,4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,-4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,4.51351666838205Z");

    60     },

    61     "can specify type accessor as a function": function(symbol) {

    62       var a = symbol().type(String);

    63       assert.pathEqual(a("circle"), "M0,4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,-4.51351666838205A4.51351666838205,4.51351666838205 0 1,1 0,4.51351666838205Z");

    64       assert.pathEqual(a("cross"), "M-5.366563145999495,-1.7888543819998317H-1.7888543819998317V-5.366563145999495H1.7888543819998317V-1.7888543819998317H5.366563145999495V1.7888543819998317H1.7888543819998317V5.366563145999495H-1.7888543819998317V1.7888543819998317H-5.366563145999495Z");

    65       assert.pathEqual(a("diamond"), "M0,-7.444838872816797L4.298279727294167,0 0,7.444838872816797 -4.298279727294167,0Z");

    66       assert.pathEqual(a("square"), "M-4,-4L4,-4 4,4 -4,4Z");

    67       assert.pathEqual(a("triangle-down"), "M0,5.26429605180997L6.078685485212741,-5.26429605180997 -6.078685485212741,-5.26429605180997Z");

    68       assert.pathEqual(a("triangle-up"), "M0,-5.26429605180997L6.078685485212741,5.26429605180997 -6.078685485212741,5.26429605180997Z");

    69     }

    70   },

    71   "symbolTypes": {

    72     topic: function() {

    73       return d3.svg.symbolTypes;

    74     },

    75     "contains circle": function(types) {

    76       assert.isTrue(types.indexOf("circle") != -1);

    77     },

    78     "contains cross": function(types) {

    79       assert.isTrue(types.indexOf("cross") != -1);

    80     },

    81     "contains diamond": function(types) {

    82       assert.isTrue(types.indexOf("diamond") != -1);

    83     },

    84     "contains square": function(types) {

    85       assert.isTrue(types.indexOf("square") != -1);

    86     },

    87     "contains triangle-down": function(types) {

    88       assert.isTrue(types.indexOf("triangle-down") != -1);

    89     },

    90     "contains triangle-up": function(types) {

    91       assert.isTrue(types.indexOf("triangle-up") != -1);

    92     }

    93   }

    94 });

    95 

    96 suite.export(module);