From 27a85be4e074d763e157d3393c72f34fa372df44 Mon Sep 17 00:00:00 2001
From: Sam Brannen <104798+sbrannen@users.noreply.github.com>
Date: Thu, 13 Aug 2026 12:41:41 +0200
Subject: [PATCH] Polish MockCookieTests

See gh-37134
---
 .../springframework/mock/web/MockCookieTests.java   | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/spring-test/src/test/java/org/springframework/mock/web/MockCookieTests.java b/spring-test/src/test/java/org/springframework/mock/web/MockCookieTests.java
index 749f12192e6..1f032efb64d 100644
--- a/spring-test/src/test/java/org/springframework/mock/web/MockCookieTests.java
+++ b/spring-test/src/test/java/org/springframework/mock/web/MockCookieTests.java
@@ -22,6 +22,7 @@ import java.time.format.DateTimeParseException;
 
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.NullAndEmptySource;
 import org.junit.jupiter.params.provider.ValueSource;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -114,16 +115,10 @@ class MockCookieTests {
 		assertThat(cookie.getValue()).isEqualTo(value);
 	}
 
-	@Test
-	void parseNullHeader() {
-		assertThatIllegalArgumentException()
-			.isThrownBy(() -> MockCookie.parse(null))
-			.withMessageContaining("Set-Cookie header must not be null or empty");
-	}
-
 	@ParameterizedTest
-	@ValueSource(strings = {"", "  "})
-	void parseEmptyHeader(String header) {
+	@NullAndEmptySource
+	@ValueSource(strings = "  ")
+	void parseNullOrEmptyHeader(String header) {
 		assertThatIllegalArgumentException()
 			.isThrownBy(() -> MockCookie.parse(header))
 			.withMessageContaining("Set-Cookie header must not be null or empty");