test: initial tests

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stdlib-js · aayush0325 · Jun 21, 2025 · Jun 21, 2025 · Jun 22, 2025 · Jun 22, 2025
commit f75dfa4b2e3b72477438e94b6b973f7da6915604
diff --git a/lib/node_modules/@stdlib/lapack/base/dlacn2/test/test.dlacn2.js b/lib/node_modules/@stdlib/lapack/base/dlacn2/test/test.dlacn2.js
@@ -0,0 +1,105 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2024 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+/* eslint-disable array-element-newline */
+
+// MODULES //
+
+var tape = require( 'tape' );
+var Float64Array = require( '@stdlib/array/float64' );
+var Int32Array = require( '@stdlib/array/int32' );
+var dgemv = require( '@stdlib/blas/base/dgemv' );
+var dcopy = require( '@stdlib/blas/base/dcopy' );
+var dlacn2 = require( './../lib/dlacn2.js' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof dlacn2, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'the function has an arity of 7', function test( t ) {
+	t.strictEqual( dlacn2.length, 7, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the function returns expected values when calculating the one-norm of a square matrix', function test( t ) {
+	var expectedISAVE;
+	var expectedKASE;
+	var expectedISGN;
+	var expectedEST;
+	var expectedV;
+	var ISAVE;
+	var KASE;
+	var ISGN;
+	var work;
+	var EST;
+	var X;
+	var V;
+	var A;
+
+	A = new Float64Array([
+		1.0, -2.0, 0.0, 0.0,
+		3.0, 4.0, -5.0, 0.0,
+		0.0, 6.0, 7.0, -8.0,
+		0.0, 0.0, 9.0, 10.0
+	]);
+
+	KASE = new Int32Array( 1 );
+	EST = new Float64Array( 1 );
+	ISGN = new Int32Array( 4 );
+	ISAVE = new Int32Array( 3 );
+	X = new Float64Array( 4 );
+	V = new Float64Array( 4 );
+
+	work = new Float64Array( 4 );
+
+	while ( true ) {
+		dlacn2( 4, V, X, ISGN, EST, KASE, ISAVE );
+
+		if ( KASE[ 0 ] === 0 ) {
+			break;
+		}
+		else if ( KASE[ 0 ] === 1 ) {
+			dgemv( 'row-major', 'no-transpose', 4, 4, 1.0, A, 4, X, 1, 0, work, 1 );
+			dcopy( 4, work, 1, X, 1 );
+		} else if ( KASE[ 0 ] === 2 ) {
+			dgemv( 'row-major', 'transpose', 4, 4, 1.0, A, 4, X, 1, 0, work, 1 );
+			dcopy( 4, work, 1, X, 1 );
+		}
+	}
+
+	expectedEST = new Float64Array( [ 12.0 ] );
+	expectedV = new Float64Array( [ -2.0, 4.0, 6.0, 0.0 ] );
+	expectedKASE = new Int32Array( [ 0 ] );
+	expectedISGN = new Int32Array( [ -1, 1, 1, 1 ] );
+	expectedISAVE = new Int32Array( [ 5, 1, 2 ] );
+
+	t.deepEqual( KASE, expectedKASE, 'returns expected value' );
+	t.deepEqual( ISGN, expectedISGN, 'returns expected value' );
+	t.deepEqual( EST, expectedEST, 'returns expected value' );
+	t.deepEqual( V, expectedV, 'returns expected value' );
+	t.deepEqual( ISAVE, expectedISAVE, 'returns expected value' );
+
+	t.end();
+});
diff --git a/lib/node_modules/@stdlib/lapack/base/dlacn2/test/test.js b/lib/node_modules/@stdlib/lapack/base/dlacn2/test/test.js
@@ -0,0 +1,82 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*    http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var proxyquire = require( 'proxyquire' );
+var IS_BROWSER = require( '@stdlib/assert/is-browser' );
+var dlacn2 = require( './../lib' );
+
+
+// VARIABLES //
+
+var opts = {
+	'skip': IS_BROWSER
+};
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof dlacn2, 'function', 'main export is a function' );
+	t.end();
+});
+
+tape( 'attached to the main export is a method providing an ndarray interface', function test( t ) {
+	t.strictEqual( typeof dlacn2.ndarray, 'function', 'method is a function' );
+	t.end();
+});
+
+tape( 'if a native implementation is available, the main export is the native implementation', opts, function test( t ) {
+	var dlacn2 = proxyquire( './../lib', {
+		'@stdlib/utils/try-require': tryRequire
+	});
+
+	t.strictEqual( dlacn2, mock, 'returns expected value' );
+	t.end();
+
+	function tryRequire() {
+		return mock;
+	}
+
+	function mock() {
+		// Mock...
+	}
+});
+
+tape( 'if a native implementation is not available, the main export is a JavaScript implementation', opts, function test( t ) {
+	var dlacn2;
+	var main;
+
+	main = require( './../lib/dlacn2.js' );
+
+	dlacn2 = proxyquire( './../lib', {
+		'@stdlib/utils/try-require': tryRequire
+	});
+
+	t.strictEqual( dlacn2, main, 'returns expected value' );
+	t.end();
+
+	function tryRequire() {
+		return new Error( 'Cannot find module' );
+	}
+});