chore: add test and benchmark stubs

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
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    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
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  - task: lint_javascript_tests
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  - task: lint_javascript_benchmarks
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  - task: lint_c_src
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  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
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  - task: lint_typescript_declarations
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  - task: lint_typescript_tests
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  - task: lint_license_headers
    status: passed
---

Author: kgryte

lib/node_modules/@stdlib/dstructs/struct/benchmark/benchmark.js

@@ -0,0 +1,78 @@
+/**
+* @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 bench = require( '@stdlib/bench' );
+var isFunction = require( '@stdlib/assert/is-function' );
+var pkg = require( './../package.json' ).name;
+var struct = require( './../lib' );
+
+
+// MAIN //
+
+bench( pkg, function benchmark( b ) {
+	var values;
+	var v;
+	var i;
+
+	values = [
+		[
+			{
+				'name': 'foo',
+				'type': 'float64'
+			}
+		],
+		[
+			{
+				'name': 'bar',
+				'type': 'float32'
+			}
+		],
+		[
+			{
+				'name': 'beep',
+				'type': 'int32'
+			}
+		],
+		[
+			{
+				'name': 'boop',
+				'type': 'uint32'
+			}
+		]
+	];
+
+	b.tic();
+	for ( i = 0; i < b.iterations; i++ ) {
+		v = struct( values[ i%values.length ] );
+		if ( typeof v !== 'function' ) {
+			b.fail( 'should return a function' );
+		}
+	}
+	b.toc();
+	if ( !isFunction( v ) ) {
+		b.fail( 'should return a function' );
+	}
+	b.pass( 'benchmark finished' );
+	b.end();
+});
+
+// FIXME: add benchmarks

lib/node_modules/@stdlib/dstructs/struct/test/test.js

@@ -0,0 +1,35 @@
+/**
+* @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 struct = require( './../lib' );
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+	t.ok( true, __filename );
+	t.strictEqual( typeof struct, 'function', 'main export is a function' );
+	t.end();
+});
+
+// FIXME: add tests