See gh-19930

This is a work in progress (WIP) which includes failing tests.

See gh-19930

Prior to this commit, there was no way to replace the Set-Cookie header
via MockHttpServletResponse. Specifically, an invocation of setHeader()
for the Set-Cookie header resulted in an additional Set-Cookie header
instead of replacing the existing one, which is in violation of the
contract for javax.servlet.http.HttpServletResponse.setHeader(...).

This commit refactors the internals of MockHttpServletResponse to ensure
that an existing Set-Cookie header is overwritten when set via an
invocation of setHeader(). This commit also verifies the expected
behavior for addHeader() and addCookie() with regard to multiple cookies.

Closes gh-23512

Closes gh-23504

Prior to this commit, the invokeMethod() utility method in
ReflectionTestUtils only supported instance methods.

This commit brings the invokeMethod() support on par with the getField()
support by supporting the invocation of static methods via two new
invokeMethod() variants.

Closes gh-23504

Closes gh-23487

The use of LinkedCaseInsensitiveMap, going back to 3.0, makes it
unnecessary to iterate over keys which can cause
ConcurrentModificationException.

Closes gh-23460

WebClient, WebTestClient, and ServerResponse

The recently added body(Object) variant can be confused easily with
body(Publisher, Class) forgetting to provide the element type and
only running into the IllegalArgumentException at runtime.

See gh-23212

This commit redeclares default methods in AbstractTestExecutionListener
in order to make them inlinable.

Rename `SearchStrategy.EXHAUSTIVE` from `MergedAnnotations` to
`SearchStrategy.TYPE_HIERARCHY`

See gh-23378

Update `ListableBeanFactory` and `BeanFactoryUtils` to add the missing
`getBeanNamesForType` methods that accept a `ResolvableType` rather
than a `Class`.

This completes the work started in 778a0194.

Closes gh-23335

See gh-23366

Added support for status codes that do not occur in HttpStatus in
DefaultClientResponseBuilder and made ClientResponse::statusCode
ClientHttpResponse::getStatusCode @Nullable.

Closed gh-23366

See gh-23384

See gh-23320

See gh-23320

See gh-23320

Prior to this commit, if multiple, directly present
`@TestPropertySource` annotations declared the same property, the
precedence ordering was top-down instead of bottom-up, in contrast to
the semantics for class hierarchies. In other words, a subsequent
`@TestPropertySource` annotation could not override a property in a
previous `@TestPropertySource` annotation.

This commit overhauls the internals of `TestPropertySourceUtils` in
order to provide proper support for property overrides within local,
directly present `@TestPropertySource` declarations.

Specifically, the `locations` and `properties` attributes from all
`@TestPropertySource` declarations that are directly present or
meta-present on a given class are now merged into a single instance of
`TestPropertySourceAttributes` internally, with assertions in place to
ensure that such "same level" `@TestPropertySource` declarations do not
configure different values for the `inheritLocations` and
`inheritProperties` flags. Effectively, all "same level"
`@TestPropertySource` declarations are treated internally as if there
were only one such annotation declared by the user.

See gh-23320

Prior to this commit, @TestPropertySource could not be declared as a
repeatable annotation. In addition, a local declaration of
@TestPropertySource would silently override a meta-present
@TestPropertySource.

This commit addresses this issue by introducing @TestPropertySources as
a container for @TestPropertySource. This commit also updates the
search and algorithms within TestPropertySourceUtils.

Closes gh-23320

gh-23289 introduced support for multiple single-line comment prefixes
for ScriptUtils, ResourceDatabasePopulator, and EmbeddedDatabaseBuilder.

This commit adds the same support for @SqlConfig in the TestContext
Framework. Specifically, @SqlConfig has a new `commentPrefixes`
attribute for setting multiple single-line comment prefixes.

Closes gh-23331

Closes gh-1835

See gh-1835

See gh-1835

See gh-23219

See gh-23219

This commit adds a getContentAsString(Charset fallbackCharset) method
to MockHttpServletResponse in order to make it easier to get the content
in a specific charset like UTF-8 when the response charset has not been
explicitly set (by default ISO-8859-1 is used).

JsonPathResultMatchers leverages this new feature to support UTF-8
content out of the box.

Closes gh-23219

See gh-23224