From 6ceb77270633b7f4abecdff4f3a9a69a2c3b5f02 Mon Sep 17 00:00:00 2001
From: Payal Goswami <payalgoswami9711@gmail.com>
Date: Sun, 4 Jan 2026 11:49:35 +0000
Subject: [PATCH] test: add even-function property test for cosh

---
type: pre_commit_static_analysis_report
description: Results of running static analysis checks when committing changes.
report:
  - task: lint_filenames
    status: passed
  - task: lint_editorconfig
    status: passed
  - task: lint_markdown
    status: na
  - task: lint_package_json
    status: na
  - task: lint_repl_help
    status: na
  - task: lint_javascript_src
    status: na
  - task: lint_javascript_cli
    status: na
  - task: lint_javascript_examples
    status: na
  - task: lint_javascript_tests
    status: passed
  - task: lint_javascript_benchmarks
    status: na
  - task: lint_python
    status: na
  - task: lint_r
    status: na
  - task: lint_c_src
    status: na
  - task: lint_c_examples
    status: na
  - task: lint_c_benchmarks
    status: na
  - task: lint_c_tests_fixtures
    status: na
  - task: lint_shell
    status: na
  - task: lint_typescript_declarations
    status: passed
  - task: lint_typescript_tests
    status: na
  - task: lint_license_headers
    status: passed
---
---
 .../math/base/special/cosh/test/test.js       | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js b/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js
index 5c4ea7d5ab3b..ab2e856e2fd5 100644
--- a/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js
+++ b/lib/node_modules/@stdlib/math/base/special/cosh/test/test.js
@@ -44,6 +44,25 @@ tape( 'main export is a function', function test( t ) {
 	t.end();
 });
 
+tape( 'the function is an even function', function test( t ) {
+	var x;
+	var i;
+
+	x = [
+		0.5,
+		1.0,
+		3.5,
+		10.0,
+		50.0,
+		100.0
+	];
+
+	for ( i = 0; i < x.length; i++ ) {
+		t.strictEqual( cosh( x[ i ] ), cosh( -x[ i ] ), 'returns same value for ' + x[ i ] + ' and -' + x[ i ] );
+	}
+	t.end();
+});
+
 tape( 'the function computes the hyperbolic cosine', function test( t ) {
 	var expected;
 	var delta;