@TestTemplate is used to signal that the annotated method is a
test template method.
In contrast to @Test methods, a test template is not itself
a test case but rather a template for test cases. As such, it is designed to
be invoked multiple times depending on the number of invocation
contexts returned by the registered providers. Must be used together with at least one provider. Otherwise,
execution will fail.
Each invocation of a test template method behaves like the execution of
a regular @Test method with full support for the same lifecycle
callbacks and extensions.
@TestTemplate methods must not be private or static
and must return void.
@TestTemplate methods may optionally declare parameters to be
resolved by ParameterResolvers.
@TestTemplate may also be used as a meta-annotation in order to
create a custom composed annotation that inherits the semantics
of @TestTemplate.
Test Execution Order
By default, test methods will be ordered using an algorithm that is
deterministic but intentionally nonobvious. This ensures that subsequent runs
of a test suite execute test methods in the same order, thereby allowing for
repeatable builds. In this context, a test method is any instance
method that is directly annotated or meta-annotated with @Test,
@RepeatedTest, @ParameterizedTest, @TestFactory, or
@TestTemplate.
Although true unit tests typically should not rely on the order
in which they are executed, there are times when it is necessary to enforce
a specific test method execution order — for example, when writing
integration tests or functional tests where the sequence of
the tests is important, especially in conjunction with
@TestInstance(Lifecycle.PER_CLASS).
To control the order in which test methods are executed, annotate your
test class or test interface with @TestMethodOrder
and specify the desired MethodOrderer implementation.
- Since:
- 5.0
- See Also:
Test,TestTemplateInvocationContext,TestTemplateInvocationContextProvider