VicarLoader.test.js

import { VicarLoaderBase } from './VicarLoaderBase.js';

function createFile( labels, labelSize, contentSize ) {

	const trimmedLabels = labels.replace( /\s+/g, ' ' ).trim();
	const byteBuffer = new Uint8Array( labelSize + contentSize );
	for ( let i = 0, l = trimmedLabels.length; i < l; i ++ ) {

		byteBuffer[ i ] = trimmedLabels.charCodeAt( i );

	}

	return byteBuffer.buffer;

}

describe( 'VicarLoader', () => {

	it( 'should correctly parse the vicar contents.', () => {

		const loader = new VicarLoaderBase();
		const labels = `
            LBLSIZE=120
            RECSIZE=40
            FORMAT='REAL'
            ORG='BSQ'
            NS=10
            NL=10
            NB=3
        `;

		const result = loader.parse( createFile( labels, 120, 1200 ) );
		expect( result.labels ).toEqual( [
			{ name: 'LBLSIZE', value: 120 },
			{ name: 'RECSIZE', value: 40 },
			{ name: 'FORMAT', value: 'REAL' },
			{ name: 'ORG', value: 'BSQ' },
			{ name: 'NS', value: 10 },
			{ name: 'NL', value: 10 },
			{ name: 'NB', value: 3 },
		] );
		expect( result.data.byteLength ).toEqual( 1200 );
		expect( result.data instanceof Float32Array ).toBeTruthy();

		expect( result.width ).toEqual( 10 );
		expect( result.height ).toEqual( 10 );
		expect( result.depth ).toEqual( 3 );

	} );

	it( 'should be tolerant to duplicate labels and use the first instance for defining the image.', () => {

		const loader = new VicarLoaderBase();
		const labels = `
            LBLSIZE=120
            RECSIZE=40
            FORMAT='REAL'
            ORG='BSQ'
            NS=10
            NL=10
            NB=3
            NL=1000
            TEST='A'
            TEST='B'
        `;

		const result = loader.parse( createFile( labels, 120, 1200 ) );
		expect( result.labels ).toEqual( [
			{ name: 'LBLSIZE', value: 120 },
			{ name: 'RECSIZE', value: 40 },
			{ name: 'FORMAT', value: 'REAL' },
			{ name: 'ORG', value: 'BSQ' },
			{ name: 'NS', value: 10 },
			{ name: 'NL', value: 10 },
			{ name: 'NB', value: 3 },
			{ name: 'NL', value: 1000 },
			{ name: 'TEST', value: 'A' },
			{ name: 'TEST', value: 'B' },
		] );
		expect( result.data.byteLength ).toEqual( 1200 );
		expect( result.data instanceof Float32Array ).toBeTruthy();

		expect( result.width ).toEqual( 10 );
		expect( result.height ).toEqual( 10 );
		expect( result.depth ).toEqual( 3 );

	} );

	it( 'should parse array labels and escaped quotes.', () => {

		const loader = new VicarLoaderBase();
		const labels = `
            LBLSIZE=200
            RECSIZE=40
            FORMAT='REAL'
            ORG='BSQ'
            NS=10
            NL=10
            NB=3
            NUM_ARR=(1,2,3, 4)
            STR_ARR=('A', 'B','C')
            MIX_ARR=( 'A', 1,'C', 3 )
            ESCAPED='test''s'
        `;

		const result = loader.parse( createFile( labels, 200, 1200 ) );
		expect( result.labels ).toEqual( [
			{ name: 'LBLSIZE', value: 200 },
			{ name: 'RECSIZE', value: 40 },
			{ name: 'FORMAT', value: 'REAL' },
			{ name: 'ORG', value: 'BSQ' },
			{ name: 'NS', value: 10 },
			{ name: 'NL', value: 10 },
			{ name: 'NB', value: 3 },
			{ name: 'NUM_ARR', value: [ 1, 2, 3, 4 ] },
			{ name: 'STR_ARR', value: [ 'A', 'B', 'C' ] },
			{ name: 'MIX_ARR', value: [ 'A', 1, 'C', 3 ] },
			{ name: 'ESCAPED', value: 'test\'s' },
		] );

	} );

} );