pdfmake/tests/columnCalculator.js at 85262106893b8f97afbbe075b4bd28c05484dbbc · bpampuch/pdfmake · GitHub

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/* jslint node: true */
'use strict';

var assert = require('assert');

var ColumnCalculator = require('../src/columnCalculator');

describe('ColumnCalculator', function () {
	describe('buildColumnWidths', function () {
		it('should set calcWidth to specified width for fixed columns', function () {
			var columns = [
				{width: 50, _minWidth: 30, _maxWidth: 80},
				{width: 35, _minWidth: 30, _maxWidth: 80},
				{width: 20, _minWidth: 30, _maxWidth: 80}
			];

			ColumnCalculator.buildColumnWidths(columns, 320);

			columns.forEach(function (col) {
				assert.equal(col._calcWidth, col.width);
			});
		});

		it('should set calcWidth to minWidth for fixed columns with elasticWidth set to true', function () {
			var columns = [
				{width: 50, _minWidth: 30, _maxWidth: 80},
				{width: 35, _minWidth: 30, _maxWidth: 80},
				{width: 20, _minWidth: 30, _maxWidth: 80, elasticWidth: true}
			];

			ColumnCalculator.buildColumnWidths(columns, 320);

			assert.equal(columns[0]._calcWidth, columns[0].width);
			assert.equal(columns[1]._calcWidth, columns[1].width);
			assert.equal(columns[2]._calcWidth, columns[2]._minWidth);
		});

		it('should set auto to maxWidth if there is enough space for all columns', function () {
			var columns = [
				{width: 'auto', _minWidth: 30, _maxWidth: 41},
				{width: 'auto', _minWidth: 30, _maxWidth: 42},
				{width: 'auto', _minWidth: 30, _maxWidth: 43}
			];

			ColumnCalculator.buildColumnWidths(columns, 320);

			columns.forEach(function (col) {
				assert.equal(col._calcWidth, col._maxWidth);
			});
		});

		it('should equally divide availableSpace to star columns', function () {
			var columns = [
				{width: '*', _minWidth: 30, _maxWidth: 41},
				{width: 'star', _minWidth: 30, _maxWidth: 42},
				{_minWidth: 30, _maxWidth: 43}
			];

			ColumnCalculator.buildColumnWidths(columns, 320);

			columns.forEach(function (col) {
				assert.equal(col._calcWidth, 320 / 3);
			});
		});

		it('should set calcWidth to minWidth if there is not enough space for the table', function () {
			var columns = [
				{width: 'auto', _minWidth: 300, _maxWidth: 410},
				{width: 'auto', _minWidth: 301, _maxWidth: 420},
				{width: 'auto', _minWidth: 303, _maxWidth: 421},
			];

			ColumnCalculator.buildColumnWidths(columns, 320);

			columns.forEach(function (col) {
				assert.equal(col._calcWidth, col._minWidth);
			});
		});

		it('should set calcWidth of star columns to availableSpace distributed across star'+
			'columns if there is not enough space for the table', function () {
			var columns = [
				{width: 'auto', _minWidth: 300, _maxWidth: 410},
				{width: '*', _minWidth: 301, _maxWidth: 420},
				{width: 'star', _minWidth: 303, _maxWidth: 421},
			];

			ColumnCalculator.buildColumnWidths(columns, 320);
			assert.equal(columns[0]._calcWidth, columns[0]._minWidth);
			assert.equal(columns[1]._calcWidth, 10);
			assert.equal(columns[2]._calcWidth, 10);
		});

		it('should make columns wider proportionally if table can fit within the available space', function () {
			var columns = [
				{width: 'auto', _minWidth: 30, _maxWidth: 41},
				{width: 'auto', _minWidth: 31, _maxWidth: 42},
				{width: 'auto', _minWidth: 33, _maxWidth: 421},
			];

			ColumnCalculator.buildColumnWidths(columns, 320);
			assert(columns[0]._calcWidth > 30);
			assert(columns[1]._calcWidth > 31);
			assert(columns[2]._calcWidth > 220);
		});

		it('should first take into account auto columns and then divide remaining space equally between all star if there is enough space for the table', function () {
			var columns = [
				{width: '*', _minWidth: 30, _maxWidth: 41},
				{width: 'auto', _minWidth: 31, _maxWidth: 42},
				{width: '*', _minWidth: 33, _maxWidth: 421},
			];

			ColumnCalculator.buildColumnWidths(columns, 320);
			assert(columns[1]._calcWidth > 31);
			assert.equal(columns[0]._calcWidth, columns[0]._calcWidth);
			assert.equal(columns[0]._calcWidth + columns[1]._calcWidth + columns[2]._calcWidth, 320);
		});
	});
});