This commit makes use of the new Supplier<String> variants of utility
methods in org.springframework.util.Assert within the spring-core
module.
Issue: SPR-14450
Prior to this commit, utility methods in
org.springframework.util.Assert accepted String arguments for custom
error messages. Such Strings are evaluated (e.g., concatenated)
eagerly, and for performance reasons, it was therefore not always
possible to make use of these utility methods. Consequently, there are
several places in the code base that "inline" identical functionality
in order to lazily evaluate error message concatenation and avoid an
unnecessary performance penalty. This leads to verbose code like the
following.
if (!contextPath.startsWith("/")) {
throw new IllegalArgumentException("contextPath '" + contextPath +
"' must start with '/'.");
}
if (contextPath.endsWith("/")) {
throw new IllegalArgumentException("contextPath '" + contextPath +
"' must not end with '/'.");
}
This commit addresses this shortcoming by introducing Supplier<String>
variants of all utility methods in org.springframework.util.Assert that
allow custom error messages to be evaluated lazily via a lambda
expression that is only evaluated if the assertion fails. This results
in a simplification of the previous examples as follows.
Assert.isTrue(contextPath.startsWith("/"), () -> "contextPath '" +
contextPath + "' must start with '/'.");
Assert.isTrue(!contextPath.endsWith("/"), () -> "contextPath '" +
contextPath + "' must not end with '/'.");
Issue: SPR-14450
This commit introduces 'before' and 'after' test execution callbacks in
the Spring TestContext Framework. Specifically, this set of commits
introduces the following.
- beforeTestExecution() and afterTestExecution() callbacks in the
TestExecutionListener API
- beforeTestExecution() and afterTestExecution() callbacks in
TestContextManager
- RunBeforeTestExecutionCallbacks and RunAfterTestExecutionCallbacks
JUnit 4 statements that are used by the SpringJUnit4ClassRunner
- Documentation in the class-level Javadoc for SpringMethodRule stating
that before/after test execution callbacks cannot be supported with
JUnit 4 Rules
- Support for JUnit Jupiter's BeforeTestExecutionCallback and
AfterTestExecutionCallback extension APIs in the SpringExtension for
JUnit 5
- Support for before/after test execution callbacks in
AbstractTestNGSpringContextTests for TestNG
Issue: SPR-4365
This commit removes `GuavaCache` and support classes. Caffeine supersedes
the caching support in the Google Guava library with an actively maintained
Java 8+ version in standalone form.
As it is the only Guava feature Spring framework integrates with, this
commit removes effectively any reference to Guava.
Issue: SPR-13797
SPR-14055 introduced first-class support for the Java 8 Parameter API.
This commit therefore replaces the MethodParameterFactory with use of
the new SynthesizingMethodParameter.forParameter(Parameter) factory
method.
Issue: SPR-13575
