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70 lines
1.9 KiB
JavaScript
70 lines
1.9 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.transform.removeProxyRules;
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chai.use( helpers );
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const expect = chai.expect;
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describe( "compiler pass |removeProxyRules|", function () {
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describe( "when a proxy rule isn't listed in |allowedStartRules|", function () {
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it( "updates references and removes it", function () {
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expect( pass ).to.changeAST(
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[
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"start = proxy",
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"proxy = proxied",
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"proxied = 'a'",
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].join( "\n" ),
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{
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rules: [
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{
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name: "start",
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expression: { type: "rule_ref", name: "proxied" },
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},
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{ name: "proxied" },
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],
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},
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{ allowedStartRules: [ "start" ] },
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);
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} );
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} );
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describe( "when a proxy rule is listed in |allowedStartRules|", function () {
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it( "updates references but doesn't remove it", function () {
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expect( pass ).to.changeAST(
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[
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"start = proxy",
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"proxy = proxied",
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"proxied = 'a'",
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].join( "\n" ),
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{
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rules: [
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{
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name: "start",
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expression: { type: "rule_ref", name: "proxied" },
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},
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{
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name: "proxy",
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expression: { type: "rule_ref", name: "proxied" },
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},
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{ name: "proxied" },
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],
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},
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{ allowedStartRules: [ "start", "proxy" ] },
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);
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} );
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} );
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} );
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