var vows = require('vows');
var assert = require('assert');
var suite = vows.describe('jStat.mode');

require('../env.js');

suite.addBatch({
  'mode': {
    'topic': function() {
      return jStat;
    },
    'return basic mode': function(jStat) {
      assert.equal(jStat.mode([1, 2, 3, 3]), 3);
    },
    'mode from instance': function(jStat) {
      assert.equal(jStat([1, 2, 3, 3]).mode(), 3);
    },
    'mode matrix cols': function(jStat) {
      assert.deepEqual(jStat([[1, 2], [1, 4]]).mode(), [1, [2, 4]]);
    }
  },
  '#mode vector': {
    'topic': function() {
      jStat([1, 2, 3, 3]).mode(this.callback);
    },
    'mode callback': function(val, stat) {
      assert.equal(val, 3);
    }
  },
  '#mode matrix cols': {
    'topic': function() {
      jStat([[1, 2], [1, 4]]).mode(this.callback);
    },
    'mode matrix cols callback': function(val, stat) {
      assert.deepEqual(val, [1, [2, 4]]);
    },
  },
  'mode of a matrix': {
    'topic': function() {
      return jStat;
    },
    'mode matrix cols with true returns the "mode of the matrix"': function() {
      assert.equal(jStat([[1, 2], [1, 4], [1, 4]]).mode(true), 1);
      assert.equal(jStat([[5, 2], [5, 4], [5, 4]]).mode(true), 5);
    }
  }
});

suite.export(module);