test: add Module constructor tests

Author: kgryte

lib/node_modules/@stdlib/blas/base/daxpy-wasm/test/test.module.js

@@ -0,0 +1,154 @@
+/**
+* @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';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var Memory = require( '@stdlib/wasm/memory' );
+var ModuleWrapper = require( '@stdlib/wasm/module-wrapper' );
+var daxpy = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is an object', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof daxpy, 'object', 'returns expected value' );
+	t.end();
+});
+
+tape( 'the `Module` method is a constructor', function test( t ) {
+	var mem;
+	var mod;
+
+	mem = new Memory({
+		'initial': 0
+	});
+	mod = new daxpy.Module( mem );
+	t.strictEqual( mod instanceof daxpy.Module, true, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the `Module` method is a constructor which does not require `new`', function test( t ) {
+	var mem;
+	var mod;
+
+	mem = new Memory({
+		'initial': 0
+	});
+	mod = daxpy.Module( mem ); // eslint-disable-line new-cap
+	t.strictEqual( mod instanceof daxpy.Module, true, 'returns expected value' );
+	t.end();
+});
+
+tape( 'the module constructor throws an error if provided a first argument which is not a WebAssembly memory instance (new)', function test( t ) {
+	var values;
+	var i;
+
+	values = [
+		'5',
+		5,
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		[],
+		{},
+		function noop() {}
+	];
+	for ( i = 0; i < values.length; i++ ) {
+		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
+	}
+	t.end();
+
+	function badValue( value ) {
+		return function badValue() {
+			return new daxpy.Module( value );
+		};
+	}
+});
+
+tape( 'the module constructor throws an error if provided a first argument which is not a WebAssembly memory instance (no new)', function test( t ) {
+	var values;
+	var i;
+
+	values = [
+		'5',
+		5,
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		[],
+		{},
+		function noop() {}
+	];
+	for ( i = 0; i < values.length; i++ ) {
+		t.throws( badValue( values[ i ] ), TypeError, 'throws an error when provided ' + values[ i ] );
+	}
+	t.end();
+
+	function badValue( value ) {
+		return function badValue() {
+			return daxpy.Module( value ); // eslint-disable-line new-cap
+		};
+	}
+});
+
+tape( 'the module instance returned by the module constructor inherits from a module wrapper', function test( t ) {
+	var mem;
+	var mod;
+
+	mem = new Memory({
+		'initial': 0
+	});
+	mod = new daxpy.Module( mem );
+
+	t.strictEqual( mod instanceof ModuleWrapper, true, 'returns expected value' );
+	t.end();
+});
+
+tape( 'attached to a module instance is a `main` method', function test( t ) {
+	var mem;
+	var mod;
+
+	mem = new Memory({
+		'initial': 0
+	});
+	mod = new daxpy.Module( mem );
+
+	t.strictEqual( typeof mod.main, 'function', 'returns expected value' );
+	t.end();
+});
+
+tape( 'attached to a module instance is an `ndarray` method', function test( t ) {
+	var mem;
+	var mod;
+
+	mem = new Memory({
+		'initial': 0
+	});
+	mod = new daxpy.Module( mem );
+
+	t.strictEqual( typeof mod.ndarray, 'function', 'returns expected value' );
+	t.end();
+});