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91 lines
3.3 KiB
JavaScript
91 lines
3.3 KiB
JavaScript
describe("PEG.js grammar parser", function() {
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var trivialGrammar;
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beforeEach(function() {
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trivialGrammar = {
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type: "grammar",
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initializer: null,
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rules: [
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{
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type: "rule",
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name: "start",
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displayName: null,
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expression: { type: "literal", value: "abcd", ignoreCase: false }
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}
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],
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startRule: "start"
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};
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this.addMatchers({
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toParseAs: function(expected) {
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var result;
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try {
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result = PEG.parser.parse(this.actual);
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this.message = function() {
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return "Expected " + jasmine.pp(this.actual) + " "
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+ (this.isNot ? "not " : "")
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+ "to parse as " + jasmine.pp(expected) + ", "
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+ "but it parsed as " + jasmine.pp(result) + ".";
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};
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return this.env.equals_(result, expected);
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} catch (e) {
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this.message = function() {
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return "Expected " + jasmine.pp(this.actual) + " "
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+ "to parse as " + jasmine.pp(expected) + ", "
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+ "but it failed to parse with message "
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+ jasmine.pp(e.message) + ".";
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};
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return false;
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}
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}
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});
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});
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/* Canonical eol is "\n". */
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it("parses eol", function() {
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expect('start =\n"abcd"' ).toParseAs(trivialGrammar);
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expect('start =\r\n"abcd"' ).toParseAs(trivialGrammar);
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expect('start =\r"abcd"' ).toParseAs(trivialGrammar);
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expect('start =\u2028"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2029"abcd"').toParseAs(trivialGrammar);
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});
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/* Canonical eolChar is "\n". */
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it("parses eolChar", function() {
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expect('start =\n"abcd"' ).toParseAs(trivialGrammar);
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expect('start =\r"abcd"' ).toParseAs(trivialGrammar);
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expect('start =\u2028"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2029"abcd"').toParseAs(trivialGrammar);
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});
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/* Canonical whitespace is " ". */
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it("parses whitespace", function() {
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expect('start =\t"abcd"' ).toParseAs(trivialGrammar);
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expect('start =\x0B"abcd"' ).toParseAs(trivialGrammar); // no "\v" in IE
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expect('start =\f"abcd"' ).toParseAs(trivialGrammar);
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expect('start = "abcd"' ).toParseAs(trivialGrammar);
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expect('start =\u00A0"abcd"').toParseAs(trivialGrammar);
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expect('start =\uFEFF"abcd"').toParseAs(trivialGrammar);
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expect('start =\u1680"abcd"').toParseAs(trivialGrammar);
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expect('start =\u180E"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2000"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2001"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2002"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2003"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2004"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2005"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2006"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2007"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2008"abcd"').toParseAs(trivialGrammar);
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expect('start =\u2009"abcd"').toParseAs(trivialGrammar);
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expect('start =\u200A"abcd"').toParseAs(trivialGrammar);
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expect('start =\u202F"abcd"').toParseAs(trivialGrammar);
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expect('start =\u205F"abcd"').toParseAs(trivialGrammar);
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expect('start =\u3000"abcd"').toParseAs(trivialGrammar);
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});
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});
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