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60 lines
2.3 KiB
JavaScript
60 lines
2.3 KiB
JavaScript
"use strict";
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var peg = require("../../../../lib/peg");
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describe("compiler pass |reportDuplicateLabels|", function() {
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var pass = peg.compiler.passes.check.reportDuplicateLabels;
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describe("in a sequence", function() {
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it("reports labels duplicate with labels of preceding elements", function() {
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expect(pass).toReportError('start = a:"a" a:"a"', {
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message: 'Label "a" is already defined at line 1, column 9.',
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location: {
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start: { offset: 14, line: 1, column: 15 },
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end: { offset: 19, line: 1, column: 20 }
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}
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});
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});
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it("doesn't report labels duplicate with labels in subexpressions", function() {
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expect(pass).not.toReportError('start = ("a" / a:"a" / "a") a:"a"');
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expect(pass).not.toReportError('start = (a:"a" { }) a:"a"');
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expect(pass).not.toReportError('start = ("a" a:"a" "a") a:"a"');
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expect(pass).not.toReportError('start = b:(a:"a") a:"a"');
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expect(pass).not.toReportError('start = $(a:"a") a:"a"');
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expect(pass).not.toReportError('start = &(a:"a") a:"a"');
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expect(pass).not.toReportError('start = !(a:"a") a:"a"');
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expect(pass).not.toReportError('start = (a:"a")? a:"a"');
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expect(pass).not.toReportError('start = (a:"a")* a:"a"');
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expect(pass).not.toReportError('start = (a:"a")+ a:"a"');
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expect(pass).not.toReportError('start = (a:"a") a:"a"');
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});
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});
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describe("in a choice", function() {
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it("doesn't report labels duplicate with labels of preceding alternatives", function() {
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expect(pass).not.toReportError('start = a:"a" / a:"a"');
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});
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});
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describe("in outer sequence", function() {
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it("reports labels duplicate with labels of preceding elements", function() {
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expect(pass).toReportError('start = a:"a" (a:"a")', {
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message: 'Label "a" is already defined at line 1, column 9.',
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location: {
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start: { offset: 15, line: 1, column: 16 },
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end: { offset: 20, line: 1, column: 21 }
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}
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});
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});
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it("doesn't report labels duplicate with the label of the current element", function() {
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expect(pass).not.toReportError('start = a:(a:"a")');
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});
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it("doesn't report labels duplicate with labels of following elements", function() {
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expect(pass).not.toReportError('start = (a:"a") a:"a"');
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});
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});
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});
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