157 lines
4.2 KiB
TypeScript
157 lines
4.2 KiB
TypeScript
/**
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* Tests ConfLoader
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*
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* Copyright (C) 2010-2019 R-T Specialty, LLC.
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*
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* This file is part of the Liza Data Collection Framework.
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*
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* liza 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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const chai = require( 'chai' );
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const expect = chai.expect;
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import { readFile } from "fs";
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import { ConfLoader as Sut } from "../../src/conf/ConfLoader";
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type FsLike = { readFile: typeof readFile };
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const {
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store: {
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MemoryStore: Store,
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},
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} = require( '../../' );
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chai.use( require( 'chai-as-promised' ) );
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describe( 'ConfLoader', () =>
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{
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it( "loads Store'd configuration from file", () =>
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{
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const expected_path = "/foo/bar/baz.json";
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const expected_data = '{ "foo": "bar" }';
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const fs = <FsLike>{
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readFile( path: string, encoding: string, callback: any )
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{
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expect( path ).to.equal( expected_path );
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expect( encoding ).to.equal( 'utf8' );
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callback( null, expected_data );
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},
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};
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return expect(
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new Sut( fs, Store )
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.fromFile( expected_path )
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.then( conf => conf.get( 'foo' ) )
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).to.eventually.deep.equal( JSON.parse( expected_data ).foo );
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} );
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it( "fails on read error", () =>
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{
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const expected_err = Error( 'rejected' );
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const fs = <FsLike>{
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readFile( _: any, __: any, callback: any )
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{
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callback( expected_err, null );
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},
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};
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return expect( new Sut( fs, Store ).fromFile( '' ) )
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.to.eventually.be.rejectedWith( expected_err );
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} );
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it( "can override #parseConfData for custom parser", () =>
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{
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const result = { foo: {} };
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const input = "foo";
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const fs = <FsLike>{
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readFile( _: any, __: any, callback: any )
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{
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callback( null, input );
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},
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};
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const sut = new class extends Sut
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{
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parseConfData( given_input: string )
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{
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expect( given_input ).to.equal( input );
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return Promise.resolve( result );
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}
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}( fs, Store );
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return expect(
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sut.fromFile( '' )
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.then( conf => conf.get( 'foo' ) )
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).to.eventually.equal( result.foo );
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} );
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it( 'rejects promise on parsing error', () =>
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{
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const expected_err = SyntaxError( 'test parsing error' );
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const fs = <FsLike>{
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readFile( _: any, __: any, callback: any )
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{
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// make async so that we clear the stack, and therefore
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// try/catch
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process.nextTick( () => callback( null, '' ) );
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},
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};
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const sut = new class extends Sut
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{
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parseConfData( _given_input: string ): never
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{
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throw expected_err;
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}
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}( fs, Store );
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return expect( sut.fromFile( '' ) )
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.to.eventually.be.rejectedWith( expected_err );
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} );
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it( "rejects promise on Store ctor error", () =>
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{
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const expected_err = Error( 'test Store ctor error' );
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const fs = <FsLike>{
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readFile: ( _: any, __: any, callback: any ) =>
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callback( null, '' ),
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};
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const badstore = () => { throw expected_err };
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return expect( new Sut( fs, badstore ).fromFile( '' ) )
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.to.eventually.be.rejectedWith( expected_err );
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} );
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it( "rejects promise on bad fs call", () =>
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{
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return expect( new Sut( <FsLike>{}, Store ).fromFile( '' ) )
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.to.eventually.be.rejected;
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} );
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} );
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