1 require("../env");

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

     3 

     4 var vows = require("vows"),

     5     assert = require("assert");

     6 

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

     8 

     9 suite.addBatch({

    10   "formatPrefix": {

    11     topic: function() {

    12       return d3.formatPrefix;

    13     },

    14     "determines the appropriate prefix for small numbers": function(prefix) {

    15       assert.equal(prefix(0).symbol, "");

    16       assert.equal(prefix(1e-00).symbol, "");

    17       assert.equal(prefix(1e-01).symbol, "");

    18       assert.equal(prefix(1e-02).symbol, "");

    19       assert.equal(prefix(1e-03).symbol, "m");

    20       assert.equal(prefix(1e-04).symbol, "m");

    21       assert.equal(prefix(1e-05).symbol, "m");

    22       assert.equal(prefix(1e-06).symbol, "μ");

    23       assert.equal(prefix(1e-07).symbol, "μ");

    24       assert.equal(prefix(1e-08).symbol, "μ");

    25       assert.equal(prefix(1e-09).symbol, "n");

    26       assert.equal(prefix(1e-10).symbol, "n");

    27       assert.equal(prefix(1e-11).symbol, "n");

    28       assert.equal(prefix(1e-12).symbol, "p");

    29       assert.equal(prefix(1e-13).symbol, "p");

    30       assert.equal(prefix(1e-14).symbol, "p");

    31       assert.equal(prefix(1e-15).symbol, "f");

    32       assert.equal(prefix(1e-16).symbol, "f");

    33       assert.equal(prefix(1e-17).symbol, "f");

    34       assert.equal(prefix(1e-18).symbol, "a");

    35       assert.equal(prefix(1e-19).symbol, "a");

    36       assert.equal(prefix(1e-20).symbol, "a");

    37       assert.equal(prefix(1e-21).symbol, "z");

    38       assert.equal(prefix(1e-22).symbol, "z");

    39       assert.equal(prefix(1e-23).symbol, "z");

    40       assert.equal(prefix(1e-24).symbol, "y");

    41       assert.equal(prefix(1e-25).symbol, "y");

    42       assert.equal(prefix(1e-26).symbol, "y");

    43       assert.equal(prefix(1e-27).symbol, "y");

    44     },

    45     "determines the appropriate prefix for large numbers": function(prefix) {

    46       assert.equal(prefix(0).symbol, "");

    47       assert.equal(prefix(1e00).symbol, "");

    48       assert.equal(prefix(1e01).symbol, "");

    49       assert.equal(prefix(1e02).symbol, "");

    50       assert.equal(prefix(1e03).symbol, "k");

    51       assert.equal(prefix(1e04).symbol, "k");

    52       assert.equal(prefix(1e05).symbol, "k");

    53       assert.equal(prefix(1e06).symbol, "M");

    54       assert.equal(prefix(1e07).symbol, "M");

    55       assert.equal(prefix(1e08).symbol, "M");

    56       assert.equal(prefix(1e09).symbol, "G");

    57       assert.equal(prefix(1e10).symbol, "G");

    58       assert.equal(prefix(1e11).symbol, "G");

    59       assert.equal(prefix(1e12).symbol, "T");

    60       assert.equal(prefix(1e13).symbol, "T");

    61       assert.equal(prefix(1e14).symbol, "T");

    62       assert.equal(prefix(1e15).symbol, "P");

    63       assert.equal(prefix(1e16).symbol, "P");

    64       assert.equal(prefix(1e17).symbol, "P");

    65       assert.equal(prefix(1e18).symbol, "E");

    66       assert.equal(prefix(1e19).symbol, "E");

    67       assert.equal(prefix(1e20).symbol, "E");

    68       assert.equal(prefix(1e21).symbol, "Z");

    69       assert.equal(prefix(1e22).symbol, "Z");

    70       assert.equal(prefix(1e23).symbol, "Z");

    71       assert.equal(prefix(1e24).symbol, "Y");

    72       assert.equal(prefix(1e25).symbol, "Y");

    73       assert.equal(prefix(1e26).symbol, "Y");

    74       assert.equal(prefix(1e27).symbol, "Y");

    75     },

    76     "determines the appropriate prefix for negative numbers": function(prefix) {

    77       assert.equal(prefix(-0).symbol, "");

    78       assert.equal(prefix(-1e-00).symbol, "");

    79       assert.equal(prefix(-1e-03).symbol, "m");

    80       assert.equal(prefix(-1e-06).symbol, "μ");

    81       assert.equal(prefix(-1e-09).symbol, "n");

    82       assert.equal(prefix(-1e-12).symbol, "p");

    83       assert.equal(prefix(-1e-15).symbol, "f");

    84       assert.equal(prefix(-1e-18).symbol, "a");

    85       assert.equal(prefix(-1e-21).symbol, "z");

    86       assert.equal(prefix(-1e-24).symbol, "y");

    87       assert.equal(prefix(-1e-27).symbol, "y");

    88       assert.equal(prefix(-1e00).symbol, "");

    89       assert.equal(prefix(-1e03).symbol, "k");

    90       assert.equal(prefix(-1e06).symbol, "M");

    91       assert.equal(prefix(-1e09).symbol, "G");

    92       assert.equal(prefix(-1e12).symbol, "T");

    93       assert.equal(prefix(-1e15).symbol, "P");

    94       assert.equal(prefix(-1e18).symbol, "E");

    95       assert.equal(prefix(-1e21).symbol, "Z");

    96       assert.equal(prefix(-1e24).symbol, "Y");

    97       assert.equal(prefix(-1e27).symbol, "Y");

    98     },

    99     "considers the effect of rounding based on precision": function(prefix) {

   100       assert.equal(prefix(999.5, 3).symbol, "k");

   101       assert.equal(prefix(999.5, 4).symbol, "");

   102       assert.equal(prefix(.009995, 3).symbol, "");

   103       assert.equal(prefix(.009995, 4).symbol, "m");

   104     }

   105   }

   106 });

   107 

   108 suite.export(module);