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test(scanner): port the rest of the lexer tests from AngularDart

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Closes #64
This commit is contained in:
Chirayu Krishnappa
2014-10-06 12:44:38 -07:00
parent 5162b3c0ca
commit e4ce69dcc7
4 changed files with 298 additions and 123 deletions
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108
modules/change_detection/test/parser/lexer_spec.js
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@ -1,108 +0,0 @@
import {describe, it, expect} from 'test_lib/test_lib';
import {Scanner, Token} from 'change_detection/parser/scanner';
import {List, ListWrapper} from "facade/collection";
import {StringWrapper} from "facade/lang";
function lex(text:string):List {
var scanner:Scanner = new Scanner(text);
var tokens:List<Token> = [];
var token:Token = scanner.scanToken();
while (token != null) {
ListWrapper.push(tokens, token);
token = scanner.scanToken();
}
return tokens;
}
function expectToken(token, index) {
expect(token instanceof Token).toBe(true);
expect(token.index).toEqual(index);
}
function expectCharacterToken(token, index, character) {
expect(character.length).toBe(1);
expectToken(token, index);
expect(token.isCharacter(StringWrapper.charCodeAt(character, 0))).toBe(true);
}
function expectOperatorToken(token, index, operator) {
expectToken(token, index);
expect(token.isOperator(operator)).toBe(true);
}
function expectNumberToken(token, index, n) {
expectToken(token, index);
expect(token.isNumber()).toBe(true);
expect(token.toNumber()).toEqual(n);
}
function expectStringToken(token, index, str) {
expectToken(token, index);
expect(token.isString()).toBe(true);
expect(token.toString()).toEqual(str);
}
function expectIdentifierToken(token, index, identifier) {
expectToken(token, index);
expect(token.isIdentifier()).toBe(true);
expect(token.toString()).toEqual(identifier);
}
function expectKeywordToken(token, index, keyword) {
expectToken(token, index);
expect(token.isKeyword()).toBe(true);
expect(token.toString()).toEqual(keyword);
}
export function main() {
describe('scanner', function() {
describe('token', function() {
it('should tokenize a simple identifier', function() {
var tokens:List<int> = lex("j");
expect(tokens.length).toEqual(1);
expectIdentifierToken(tokens[0], 0, 'j');
});
it('should tokenize a dotted identifier', function() {
var tokens:List<int> = lex("j.k");
expect(tokens.length).toEqual(3);
expectIdentifierToken(tokens[0], 0, 'j');
expectCharacterToken (tokens[1], 1, '.');
expectIdentifierToken(tokens[2], 2, 'k');
});
it('should tokenize an operator', function() {
var tokens:List<int> = lex("j-k");
expect(tokens.length).toEqual(3);
expectOperatorToken(tokens[1], 1, '-');
});
it('should tokenize an indexed operator', function() {
var tokens:List<int> = lex("j[k]");
expect(tokens.length).toEqual(4);
expectCharacterToken(tokens[1], 1, "[");
expectCharacterToken(tokens[3], 3, "]");
});
it('should tokenize numbers', function() {
var tokens:List<int> = lex("88");
expect(tokens.length).toEqual(1);
expectNumberToken(tokens[0], 0, 88);
});
it('should tokenize numbers within index ops', function() {
expectNumberToken(lex("a[22]")[2], 2, 22);
});
it('should tokenize simple quoted strings', function() {
expectStringToken(lex('"a"')[0], 0, "a");
});
it('should tokenize quoted strings with escaped quotes', function() {
expectStringToken(lex('"a\\""')[0], 0, 'a"');
});
});
});
}