To be able to run JTReg tests, configure needs to know where to find the JTReg test framework. If it is not picked up automatically by configure, use the --with-jtreg=<path to jtreg home> option to point to the JTReg framework. Note that this option should point to the JTReg home, i.e. the top directory, containing lib/jtreg.jar etc. (An alternative is to set the JT_HOME environment variable to point to the JTReg home before running configure.)
All functionality is available using the run-test make target. In this use case, the test or tests to be executed is controlled using the TEST variable. To speed up subsequent test runs with no source code changes, run-test-only can be used instead, which do not depend on the source and test image build.
For some common top-level tests, direct make targets have been generated. This includes all JTReg test groups, the hotspot gtest, and custom tests (if present). This means that make run-test-tier1 is equivalent to make run-test TEST="tier1", but the latter is more tab-completion friendly. For more complex test runs, the run-test TEST="x" solution needs to be used.
The test specifications given in TEST is parsed into fully qualified test descriptors, which clearly and unambigously show which tests will be run. As an example, :tier1 will expand to jtreg:jdk/test:tier1 jtreg:langtools/test:tier1 jtreg:nashorn/test:tier1 jtreg:jaxp/test:tier1. You can always submit a list of fully qualified test descriptors in the TEST variable if you want to shortcut the parser.
The test specifications given in TEST is parsed into fully qualified test descriptors, which clearly and unambigously show which tests will be run. As an example, :tier1 will expand to jtreg:$(TOPDIR)/test/hotspot/jtreg:tier1 jtreg:$(TOPDIR)/test/jdk:tier1 jtreg:$(TOPDIR)/test/langtools:tier1 jtreg:$(TOPDIR)/test/nashorn:tier1 jtreg:$(TOPDIR)/test/jaxp:tier1. You can always submit a list of fully qualified test descriptors in the TEST variable if you want to shortcut the parser.
JTReg test groups can be specified either without a test root, e.g. :tier1 (or tier1, the initial colon is optional), or with, e.g. hotspot/test:tier1, jdk/test:jdk_util.
When specified without a test root, all matching groups from all tests roots will be added. Otherwise, only the group from the specified test root will be added.
-Individual JTReg tests or directories containing JTReg tests can also be specified, like hotspot/test/native_sanity/JniVersion.java or hotspot/test/native_sanity. You can also specify an absolute path, to point to a JTReg test outside the source tree.
As long as the test groups or test paths can be uniquely resolved, you do not need to enter the jtreg: prefix. If this is not possible, or if you want to use a fully qualified test descriptor, add jtreg:, e.g. jtreg:hotspot/test/native_sanity.
JTReg tests can be selected either by picking a JTReg test group, or a selection of files or directories containing JTReg tests.
+JTReg test groups can be specified either without a test root, e.g. :tier1 (or tier1, the initial colon is optional), or with, e.g. hotspot:tier1, test/jdk:jdk_util or $(TOPDIR)/test/hotspot/jtreg:hotspot_all. The test root can be specified either as an absolute path, or a path relative to the OpenJDK top directory, or the test directory. For simplicity, the hotspot JTReg test root, which really is hotspot/jtreg can be abbreviated as just hotspot.
When specified without a test root, all matching groups from all test roots will be added. Otherwise, only the group from the specified test root will be added.
+Individual JTReg tests or directories containing JTReg tests can also be specified, like test/hotspot/jtreg/native_sanity/JniVersion.java or hotspot/jtreg/native_sanity. Just like for test root selection, you can either specify an absolute path (which can even point to JTReg tests outside the source tree), or a path relative to either the OpenJDK top directory or the test directory. hotspot can be used as an alias for hotspot/jtreg here as well.
As long as the test groups or test paths can be uniquely resolved, you do not need to enter the jtreg: prefix. If this is not possible, or if you want to use a fully qualified test descriptor, add jtreg:, e.g. jtreg:test/hotspot/jtreg/native_sanity.
Since the Hotspot Gtest suite is so quick, the default is to run all tests. This is specified by just gtest, or as a fully qualified test descriptor gtest:all.
If you want, you can single out an individual test or a group of tests, for instance gtest:LogDecorations or gtest:LogDecorations.level_test_vm. This can be particularly useful if you want to run a shaky test repeatedly.