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65 lines
1.4 KiB
JavaScript
65 lines
1.4 KiB
JavaScript
"use strict";
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const chai = require( "chai" );
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const helpers = require( "./helpers" );
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const pass = require( "pegjs" ).compiler.passes.check.reportUnusedRules;
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chai.use( helpers );
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const expect = chai.expect;
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describe( "compiler pass |reportUnusedRules|", function () {
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it( "should report rules that are not referenced", function () {
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expect( pass ).to.reportWarning(
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`
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start = .
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unused = .
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`,
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`Rule "unused" is not referenced.`
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);
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expect( pass ).to.reportWarning(
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`
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start = .
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unused = .
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used = .
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`,
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[
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`Rule "used" is not referenced.`,
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`Rule "unused" is not referenced.`
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]
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);
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} );
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it( "does not report rules that are referenced", function () {
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expect( pass ).not.to.reportWarning( `start = .` );
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expect( pass ).not.to.reportWarning( `
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start = used
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used = .
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` );
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} );
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it( "does not report any rules that the generated parser starts parsing from", function () {
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expect( pass ).not.to.reportWarning(
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`
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a = "x"
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b = a
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c = .+
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`,
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null,
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{
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allowedStartRules: [ "b", "c" ]
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}
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);
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} );
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} );
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