- All Implemented Interfaces:
ClassOrderer
- Enclosing interface:
ClassOrderer
ClassOrderer
that orders classes pseudo-randomly.
Custom Seed
By default, the random seed used for ordering classes is the
value returned by System.nanoTime()
during static class
initialization. In order to support repeatable builds, the value of the
default random seed is logged at CONFIG
level. In addition, a
custom seed (potentially the default seed from the previous test plan
execution) may be specified via the "junit.jupiter.execution.order.random.seed"
configuration parameter which can be supplied via the Launcher
API, build tools (e.g., Gradle and Maven), a JVM system property, or the JUnit
Platform configuration file (i.e., a file named junit-platform.properties
in the root of the class path). Consult the User Guide for further information.
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from interface org.junit.jupiter.api.ClassOrderer
ClassOrderer.ClassName, ClassOrderer.DisplayName, ClassOrderer.OrderAnnotation, ClassOrderer.Random
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Field Summary
Modifier and TypeFieldDescriptionstatic final String
Property name used to set the random seed used by thisClassOrderer
: "junit.jupiter.execution.order.random.seed"Fields inherited from interface org.junit.jupiter.api.ClassOrderer
DEFAULT_ORDER_PROPERTY_NAME
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
orderClasses
(ClassOrdererContext context) Order the classes encapsulated in the suppliedClassOrdererContext
pseudo-randomly.
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Field Details
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RANDOM_SEED_PROPERTY_NAME
Property name used to set the random seed used by thisClassOrderer
: "junit.jupiter.execution.order.random.seed"The same property is used by
MethodOrderer.Random
for consistency between the two random orderers.Supported Values
Supported values include any string that can be converted to a
Long
viaLong.valueOf(String)
.If not specified or if the specified value cannot be converted to a
Long
, the default random seed will be used (see the class-level Javadoc for details).- See Also:
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Constructor Details
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Random
public Random()
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Method Details
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orderClasses
Order the classes encapsulated in the suppliedClassOrdererContext
pseudo-randomly.- Specified by:
orderClasses
in interfaceClassOrderer
- Parameters:
context
- theClassOrdererContext
containing the class descriptors to order; nevernull
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