helpers.math.tests.js

'use strict';

describe('Chart.helpers.math', function() {
	var math = Chart.helpers.math;

	it('should do a log10 operation', function() {
		expect(math.log10(0)).toBe(-Infinity);

		// Check all allowed powers of 10, which should return integer values
		var maxPowerOf10 = Math.floor(math.log10(Number.MAX_VALUE));
		for (var i = 0; i < maxPowerOf10; i += 1) {
			expect(math.log10(Math.pow(10, i))).toBe(i);
		}
	});
});