77 lines
2.4 KiB
JavaScript
77 lines
2.4 KiB
JavaScript
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
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/* globals expect, it, describe, StringStream, Lexer */
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'use strict';
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describe('parser', function() {
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describe('Lexer', function() {
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it('should stop parsing numbers at the end of stream', function() {
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var input = new StringStream('11.234');
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var lexer = new Lexer(input);
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var result = lexer.getNumber();
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expect(result).toEqual(11.234);
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});
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it('should parse PostScript numbers', function() {
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var numbers = ['-.002', '34.5', '-3.62', '123.6e10', '1E-5', '-1.', '0.0',
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'123', '-98', '43445', '0', '+17'];
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for (var i = 0, ii = numbers.length; i < ii; i++) {
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var num = numbers[i];
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var input = new StringStream(num);
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var lexer = new Lexer(input);
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var result = lexer.getNumber();
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expect(result).toEqual(parseFloat(num));
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}
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});
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it('should handle glued numbers and operators', function() {
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var input = new StringStream('123ET');
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var lexer = new Lexer(input);
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var value = lexer.getNumber();
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expect(value).toEqual(123);
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// The lexer must not have consumed the 'E'
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expect(lexer.currentChar).toEqual(0x45); // 'E'
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});
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it('should stop parsing strings at the end of stream', function() {
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var input = new StringStream('(1$4)');
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input.getByte = function(super_getByte) {
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// simulating end of file using null (see issue 2766)
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var ch = super_getByte.call(input);
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return (ch === 0x24 /* '$' */ ? -1 : ch);
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}.bind(input, input.getByte);
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var lexer = new Lexer(input);
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var result = lexer.getString();
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expect(result).toEqual('1');
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});
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it('should not throw exception on bad input', function() {
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// '8 0 2 15 5 2 2 2 4 3 2 4'
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// should be parsed as
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// '80 21 55 22 24 32'
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var input = new StringStream('<7 0 2 15 5 2 2 2 4 3 2 4>');
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var lexer = new Lexer(input);
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var result = lexer.getHexString();
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expect(result).toEqual('p!U"$2');
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});
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it('should ignore escaped CR and LF', function() {
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// '(\101\<CR><LF>\102)'
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// should be parsed as
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// "AB"
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var input = new StringStream('(\\101\\\r\n\\102\\\r\\103\\\n\\104)');
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var lexer = new Lexer(input);
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var result = lexer.getString();
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expect(result).toEqual('ABCD');
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});
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});
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});
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