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91 lines
3.0 KiB
JavaScript
91 lines
3.0 KiB
JavaScript
describe("compiler pass |reportMissingRules|", function() {
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var pass = PEG.compiler.passes.reportMissingRules;
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beforeEach(function() {
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this.addMatchers({
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toReportMissingRuleIn: function(grammar) {
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var ast = PEG.parser.parse(grammar);
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try {
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this.actual(ast);
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this.message = function() {
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return "Expected the pass to report a missing rule for grammar "
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+ jasmine.pp(grammar) + ", "
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+ "but it didn't.";
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};
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return false;
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} catch (e) {
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if (this.isNot) {
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this.message = function() {
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return "Expected the pass not to report a missing rule for grammar "
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+ jasmine.pp(grammar) + ", "
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+ "but it did.";
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};
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} else {
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this.message = function() {
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return "Expected the pass to report a missing rule for grammar "
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+ jasmine.pp(grammar) + ", "
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+ "but it reported an error with message "
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+ jasmine.pp(e.message) + ".";
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};
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}
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return e.message === 'Referenced rule "missing" does not exist.';
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}
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}
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});
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});
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it("reports missing rule referenced from a rule", function() {
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expect(pass).toReportMissingRuleIn('start = missing');
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});
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it("reports missing rule referenced from a named", function() {
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expect(pass).toReportMissingRuleIn('start "start" = missing');
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});
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it("reports missing rule referenced from a choice", function() {
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expect(pass).toReportMissingRuleIn('start = missing / "a" / "b"');
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expect(pass).toReportMissingRuleIn('start = "a" / "b" / missing');
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});
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it("reports missing rule referenced from an action", function() {
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expect(pass).toReportMissingRuleIn('start = missing { }');
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});
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it("reports missing rule referenced from a sequence", function() {
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expect(pass).toReportMissingRuleIn('start = missing "a" "b"');
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expect(pass).toReportMissingRuleIn('start = "a" "b" missing');
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});
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it("reports missing rule referenced from a labeled", function() {
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expect(pass).toReportMissingRuleIn('start = label:missing');
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});
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it("reports missing rule referenced from a text", function() {
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expect(pass).toReportMissingRuleIn('start = $missing');
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});
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it("reports missing rule referenced from a simple and", function() {
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expect(pass).toReportMissingRuleIn('start = &missing');
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});
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it("reports missing rule referenced from a simple not", function() {
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expect(pass).toReportMissingRuleIn('start = &missing');
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});
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it("reports missing rule referenced from an optional", function() {
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expect(pass).toReportMissingRuleIn('start = missing?');
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});
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it("reports missing rule referenced from a zero or more", function() {
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expect(pass).toReportMissingRuleIn('start = missing*');
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});
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it("reports missing rule referenced from a one or more", function() {
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expect(pass).toReportMissingRuleIn('start = missing+');
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});
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});
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