`MockCookie.parse()` fails to parse custom attribute with a value

[albertoshiroma]

I was trying to upgrade to spring-test 6.2.x when most of the unit tests got an error parsing "Version" attribute.

Example:

MockCookie.parse("mycookie=mycookie_value; HttpOnly; Version=1");

Results in

java.lang.IllegalArgumentException: Cookie attribute name "Version=1" contains an invalid character for an attribute name
	at jakarta.servlet.http.Cookie.setAttribute(Cookie.java:468)
	at org.springframework.mock.web.MockCookie.setAttribute(MockCookie.java:204)
	at org.springframework.mock.web.MockCookie.parse(MockCookie.java:181)

[sbrannen]

Hi @albertoshiroma,

Congratulations on submitting your first issue for the Spring Framework! 👍

This is a regression that was introduced in conjunction with:

• Add Partitioned cookie attribute support for reactive servers #31454

We'll look into it.

[sbrannen]

This has been fixed in 6.2.x and will be available in the upcoming 6.2.4 release.