111 lines
2.8 KiB
JavaScript
111 lines
2.8 KiB
JavaScript
/**
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* Constant resolver for test case reader
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*
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* Copyright (C) 2018 R-T Specialty, LLC.
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*
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* This file is part of TAME.
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*
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* TAME is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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"use strict";
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const { Trait } = require( 'easejs' );
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const TestReader = require( './TestReader' );
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/**
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* Resolve program constants by replacing them with their numeric value
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*
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* The result is a loaded YAML file that contains only numeric input. All
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* non-numeric input is interpreted as a constant.
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*
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* Any non-numeric value is considered to be a constant, so it is important
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* to perform all other data transformations before applying constant
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* resolution.
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*/
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module.exports = Trait( 'ConstResolver' )
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.implement( TestReader )
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.extend(
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{
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/**
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* Program from which to load constants
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*
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* @type {Program}
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*/
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'private _program': null,
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/**
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* Initialize with program from which to load constants
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*
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* @param {Program} program source program
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*/
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__mixin( program )
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{
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this._program = program;
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},
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/**
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* Load test cases and resolve constants
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*
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* @param {*} src data source
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*
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* @return {Array<TestCase>} array of test cases
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*/
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'abstract override public loadCases'( yaml )
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{
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const data = this.__super( yaml );
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const { consts } = this._program.rater;
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return data.map(
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testcase => testcase.mapEachValue(
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value => this._resolve( value, consts )
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)
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);
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},
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/**
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* Resolve constant
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*
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* If the constant is not known (via CONSTS), an error is thrown.
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*
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* @param {number|Array} input scalar or array of inputs
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* @param {Object} consts constant mapping
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*
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* @throws {Error} if constant is unknown in CONSTS
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*
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* @return {number|Array} resolved value(s)
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*/
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'private _resolve'( input, consts )
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{
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// already a number, return as-is
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if ( !isNaN( +input ) )
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{
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return input;
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}
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const result = consts[ input ];
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if ( result === undefined )
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{
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throw Error( `unknown constant: ${input}` );
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}
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return result;
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}
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} );
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