527 lines
20 KiB
Plaintext
527 lines
20 KiB
Plaintext
[[Testing Framework Cheatsheet]]
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= Testing
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[partintro]
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Elasticsearch uses jUnit for testing, it also uses randomness in the
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tests, that can be set using a seed, the following is a cheatsheet of
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options for running the tests for ES.
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== Creating packages
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To create a distribution without running the tests, simply run the
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following:
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-----------------------------
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gradle assemble
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-----------------------------
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=== Running Elasticsearch from a checkout
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In order to run Elasticsearch from source without building a package, you can
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run it using Gradle:
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-------------------------------------
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gradle run
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-------------------------------------
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=== Test case filtering.
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- `tests.class` is a class-filtering shell-like glob pattern,
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- `tests.method` is a method-filtering glob pattern.
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Run a single test case (variants)
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----------------------------------------------------------
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gradle test -Dtests.class=org.elasticsearch.package.ClassName
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gradle test "-Dtests.class=*.ClassName"
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----------------------------------------------------------
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Run all tests in a package and sub-packages
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----------------------------------------------------
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gradle test "-Dtests.class=org.elasticsearch.package.*"
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----------------------------------------------------
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Run any test methods that contain 'esi' (like: ...r*esi*ze...).
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-------------------------------
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gradle test "-Dtests.method=*esi*"
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-------------------------------
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You can also filter tests by certain annotations ie:
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* `@Nightly` - tests that only run in nightly builds (disabled by default)
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* `@Backwards` - backwards compatibility tests (disabled by default)
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* `@AwaitsFix` - tests that are waiting for a bugfix (disabled by default)
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* `@BadApple` - tests that are known to fail randomly (disabled by default)
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Those annotation names can be combined into a filter expression like:
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------------------------------------------------
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gradle test -Dtests.filter="@nightly and not @backwards"
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------------------------------------------------
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to run all nightly test but not the ones that are backwards tests. `tests.filter` supports
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the boolean operators `and, or, not` and grouping ie:
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---------------------------------------------------------------
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gradle test -Dtests.filter="@nightly and not(@badapple or @backwards)"
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---------------------------------------------------------------
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=== Seed and repetitions.
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Run with a given seed (seed is a hex-encoded long).
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------------------------------
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gradle test -Dtests.seed=DEADBEEF
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------------------------------
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=== Repeats _all_ tests of ClassName N times.
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Every test repetition will have a different method seed
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(derived from a single random master seed).
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--------------------------------------------------
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gradle test -Dtests.iters=N -Dtests.class=*.ClassName
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--------------------------------------------------
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=== Repeats _all_ tests of ClassName N times.
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Every test repetition will have exactly the same master (0xdead) and
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method-level (0xbeef) seed.
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------------------------------------------------------------------------
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gradle test -Dtests.iters=N -Dtests.class=*.ClassName -Dtests.seed=DEAD:BEEF
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------------------------------------------------------------------------
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=== Repeats a given test N times
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(note the filters - individual test repetitions are given suffixes,
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ie: testFoo[0], testFoo[1], etc... so using testmethod or tests.method
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ending in a glob is necessary to ensure iterations are run).
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-------------------------------------------------------------------------
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gradle test -Dtests.iters=N -Dtests.class=*.ClassName -Dtests.method=mytest*
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-------------------------------------------------------------------------
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Repeats N times but skips any tests after the first failure or M initial failures.
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-------------------------------------------------------------
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gradle test -Dtests.iters=N -Dtests.failfast=true -Dtestcase=...
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gradle test -Dtests.iters=N -Dtests.maxfailures=M -Dtestcase=...
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-------------------------------------------------------------
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=== Test groups.
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Test groups can be enabled or disabled (true/false).
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Default value provided below in [brackets].
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------------------------------------------------------------------
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gradle test -Dtests.nightly=[false] - nightly test group (@Nightly)
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gradle test -Dtests.weekly=[false] - weekly tests (@Weekly)
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gradle test -Dtests.awaitsfix=[false] - known issue (@AwaitsFix)
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------------------------------------------------------------------
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=== Load balancing and caches.
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By default the tests run on up to 4 JVMs based on the number of cores. If you
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want to explicitly specify the number of JVMs you can do so on the command
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line:
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----------------------------
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gradle test -Dtests.jvms=8
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----------------------------
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Or in `~/.gradle/gradle.properties`:
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----------------------------
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systemProp.tests.jvms=8
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----------------------------
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Its difficult to pick the "right" number here. Hypercores don't count for CPU
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intensive tests and you should leave some slack for JVM-interal threads like
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the garbage collector. And you have to have enough RAM to handle each JVM.
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=== Test compatibility.
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It is possible to provide a version that allows to adapt the tests behaviour
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to older features or bugs that have been changed or fixed in the meantime.
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-----------------------------------------
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gradle test -Dtests.compatibility=1.0.0
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-----------------------------------------
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=== Miscellaneous.
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Run all tests without stopping on errors (inspect log files).
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-----------------------------------------
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gradle test -Dtests.haltonfailure=false
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-----------------------------------------
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Run more verbose output (slave JVM parameters, etc.).
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----------------------
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gradle test -verbose
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----------------------
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Change the default suite timeout to 5 seconds for all
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tests (note the exclamation mark).
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---------------------------------------
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gradle test -Dtests.timeoutSuite=5000! ...
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---------------------------------------
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Change the logging level of ES (not gradle)
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--------------------------------
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gradle test -Dtests.es.logger.level=DEBUG
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--------------------------------
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Print all the logging output from the test runs to the commandline
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even if tests are passing.
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------------------------------
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gradle test -Dtests.output=always
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------------------------------
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Configure the heap size.
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------------------------------
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gradle test -Dtests.heap.size=512m
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------------------------------
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Pass arbitrary jvm arguments.
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------------------------------
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# specify heap dump path
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gradle test -Dtests.jvm.argline="-XX:HeapDumpPath=/path/to/heapdumps"
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# enable gc logging
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gradle test -Dtests.jvm.argline="-verbose:gc"
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# enable security debugging
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gradle test -Dtests.jvm.argline="-Djava.security.debug=access,failure"
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------------------------------
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== Backwards Compatibility Tests
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Running backwards compatibility tests is disabled by default since it
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requires a release version of elasticsearch to be present on the test system.
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To run backwards compatibilty tests untar or unzip a release and run the tests
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with the following command:
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---------------------------------------------------------------------------
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gradle test -Dtests.filter="@backwards" -Dtests.bwc.version=x.y.z -Dtests.bwc.path=/path/to/elasticsearch -Dtests.security.manager=false
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---------------------------------------------------------------------------
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Note that backwards tests must be run with security manager disabled.
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If the elasticsearch release is placed under `./backwards/elasticsearch-x.y.z` the path
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can be omitted:
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---------------------------------------------------------------------------
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gradle test -Dtests.filter="@backwards" -Dtests.bwc.version=x.y.z -Dtests.security.manager=false
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---------------------------------------------------------------------------
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To setup the bwc test environment execute the following steps (provided you are
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already in your elasticsearch clone):
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---------------------------------------------------------------------------
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$ mkdir backwards && cd backwards
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$ curl -O https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-1.2.1.tar.gz
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$ tar -xzf elasticsearch-1.2.1.tar.gz
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---------------------------------------------------------------------------
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== Running verification tasks
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To run all verification tasks, including static checks, unit tests, and integration tests:
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---------------------------------------------------------------------------
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gradle check
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---------------------------------------------------------------------------
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Note that this will also run the unit tests and precommit tasks first. If you want to just
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run the integration tests (because you are debugging them):
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---------------------------------------------------------------------------
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gradle integTest
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---------------------------------------------------------------------------
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If you want to just run the precommit checks:
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---------------------------------------------------------------------------
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gradle precommit
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---------------------------------------------------------------------------
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== Testing the REST layer
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The available integration tests make use of the java API to communicate with
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the elasticsearch nodes, using the internal binary transport (port 9300 by
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default).
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The REST layer is tested through specific tests that are shared between all
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the elasticsearch official clients and consist of YAML files that describe the
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operations to be executed and the obtained results that need to be tested.
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The REST tests are run automatically when executing the "gradle check" command. To run only the
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REST tests use the following command:
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---------------------------------------------------------------------------
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gradle :distribution:integ-test-zip:integTest \
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-Dtests.class="org.elasticsearch.test.rest.*Yaml*IT"
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---------------------------------------------------------------------------
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A specific test case can be run with
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---------------------------------------------------------------------------
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gradle :distribution:integ-test-zip:integTest \
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-Dtests.class="org.elasticsearch.test.rest.*Yaml*IT" \
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-Dtests.method="test {p0=cat.shards/10_basic/Help}"
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---------------------------------------------------------------------------
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`*Yaml*IT` are the executable test classes that runs all the
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yaml suites available within the `rest-api-spec` folder.
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The REST tests support all the options provided by the randomized runner, plus the following:
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* `tests.rest[true|false]`: determines whether the REST tests need to be run (default) or not.
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* `tests.rest.suite`: comma separated paths of the test suites to be run
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(by default loaded from /rest-api-spec/test). It is possible to run only a subset
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of the tests providing a sub-folder or even a single yaml file (the default
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/rest-api-spec/test prefix is optional when files are loaded from classpath)
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e.g. -Dtests.rest.suite=index,get,create/10_with_id
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* `tests.rest.blacklist`: comma separated globs that identify tests that are
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blacklisted and need to be skipped
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e.g. -Dtests.rest.blacklist=index/*/Index document,get/10_basic/*
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* `tests.rest.spec`: REST spec path (default /rest-api-spec/api)
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Note that the REST tests, like all the integration tests, can be run against an external
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cluster by specifying the `tests.cluster` property, which if present needs to contain a
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comma separated list of nodes to connect to (e.g. localhost:9300). A transport client will
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be created based on that and used for all the before|after test operations, and to extract
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the http addresses of the nodes so that REST requests can be sent to them.
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== Testing scripts
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The simplest way to test scripts and the packaged distributions is to use
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Vagrant. You can get started by following there five easy steps:
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. Install Virtual Box and Vagrant.
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. (Optional) Install vagrant-cachier to squeeze a bit more performance out of
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the process:
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--------------------------------------
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vagrant plugin install vagrant-cachier
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--------------------------------------
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. Validate your installed dependencies:
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-------------------------------------
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gradle :qa:vagrant:vagrantCheckVersion
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-------------------------------------
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. Download and smoke test the VMs with `gradle vagrantSmokeTest` or
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`gradle -Pvagrant.boxes=all vagrantSmokeTest`. The first time you run this it will
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download the base images and provision the boxes and immediately quit. If you
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you this again it'll skip the download step.
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. Run the tests with `gradle packagingTest`. This will cause gradle to build
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the tar, zip, and deb packages and all the plugins. It will then run the tests
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on ubuntu-1404 and centos-7. We chose those two distributions as the default
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because they cover deb and rpm packaging and SyvVinit and systemd.
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You can run on all the VMs by running `gradle -Pvagrant.boxes=all packagingTest`.
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You can run a particular VM with a command like
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`gradle -Pvagrant.boxes=oel-7 packagingTest`. See `gradle tasks` for a complete
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list of available vagrant boxes for testing. It's important to know that if you
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ctrl-c any of these `gradle` commands then the boxes will remain running and
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you'll have to terminate them with 'gradle stop'.
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All the regular vagrant commands should just work so you can get a shell in a
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VM running trusty by running
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`vagrant up ubuntu-1404 --provider virtualbox && vagrant ssh ubuntu-1404`.
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These are the linux flavors the Vagrantfile currently supports:
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* ubuntu-1404 aka trusty
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* ubuntu-1604 aka xenial
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* debian-8 aka jessie, the current debian stable distribution
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* centos-6
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* centos-7
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* fedora-25
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* oel-6 aka Oracle Enterprise Linux 6
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* oel-7 aka Oracle Enterprise Linux 7
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* sles-12
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* opensuse-13
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We're missing the following from the support matrix because there aren't high
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quality boxes available in vagrant atlas:
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* sles-11
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We're missing the following because our tests are very linux/bash centric:
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* Windows Server 2012
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It's important to think of VMs like cattle. If they become lame you just shoot
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them and let vagrant reprovision them. Say you've hosed your precise VM:
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----------------------------------------------------
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vagrant ssh ubuntu-1404 -c 'sudo rm -rf /bin'; echo oops
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----------------------------------------------------
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All you've got to do to get another one is
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----------------------------------------------
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vagrant destroy -f ubuntu-1404 && vagrant up ubuntu-1404 --provider virtualbox
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----------------------------------------------
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The whole process takes a minute and a half on a modern laptop, two and a half
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without vagrant-cachier.
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Its possible that some downloads will fail and it'll be impossible to restart
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them. This is a bug in vagrant. See the instructions here for how to work
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around it:
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https://github.com/mitchellh/vagrant/issues/4479
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Some vagrant commands will work on all VMs at once:
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------------------
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vagrant halt
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vagrant destroy -f
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------------------
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`vagrant up` would normally start all the VMs but we've prevented that because
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that'd consume a ton of ram.
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== Testing scripts more directly
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In general its best to stick to testing in vagrant because the bats scripts are
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destructive. When working with a single package it's generally faster to run its
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tests in a tighter loop than gradle provides. In one window:
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--------------------------------
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gradle :distribution:rpm:assemble
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--------------------------------
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and in another window:
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----------------------------------------------------
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vagrant up centos-7 --provider virtualbox && vagrant ssh centos-7
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cd $BATS_ARCHIVES
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sudo -E bats $BATS_TESTS/*rpm*.bats
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----------------------------------------------------
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If you wanted to retest all the release artifacts on a single VM you could:
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-------------------------------------------------
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gradle setupBats
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cd qa/vagrant; vagrant up ubuntu-1404 --provider virtualbox && vagrant ssh ubuntu-1404
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cd $BATS_ARCHIVES
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sudo -E bats $BATS_TESTS/*.bats
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-------------------------------------------------
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You can also use Gradle to prepare the test environment and then starts a single VM:
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-------------------------------------------------
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gradle vagrantFedora25#up
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-------------------------------------------------
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Or any of vagrantCentos6#up, vagrantCentos7#up, vagrantDebian8#up,
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vagrantFedora25#up, vagrantOel6#up, vagrantOel7#up, vagrantOpensuse13#up,
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vagrantSles12#up, vagrantUbuntu1404#up, vagrantUbuntu1604#up.
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Once up, you can then connect to the VM using SSH from the elasticsearch directory:
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-------------------------------------------------
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vagrant ssh fedora-25
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-------------------------------------------------
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Or from another directory:
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-------------------------------------------------
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VAGRANT_CWD=/path/to/elasticsearch vagrant ssh fedora-25
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-------------------------------------------------
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Note: Starting vagrant VM outside of the elasticsearch folder requires to
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indicates the folder that contains the Vagrantfile using the VAGRANT_CWD
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environment variable.
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== Testing backwards compatibility
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Backwards compatibility tests exist to test upgrading from each supported version
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to the current version. To run all backcompat tests use:
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-------------------------------------------------
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gradle bwcTest
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-------------------------------------------------
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A specific version can be tested as well. For example, to test backcompat with
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version 5.3.2 run:
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-------------------------------------------------
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gradle v5.3.2#bwcTest
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-------------------------------------------------
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When running `gradle check`, some minimal backcompat checks are run. Which version
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is tested depends on the branch. On master, this will test against the current
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stable branch. On the stable branch, it will test against the latest release
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branch. Finally, on a release branch, it will test against the most recent release.
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== Coverage analysis
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Tests can be run instrumented with jacoco to produce a coverage report in
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`target/site/jacoco/`.
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Unit test coverage:
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---------------------------------------------------------------------------
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mvn -Dtests.coverage test jacoco:report
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---------------------------------------------------------------------------
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Integration test coverage:
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---------------------------------------------------------------------------
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mvn -Dtests.coverage -Dskip.unit.tests verify jacoco:report
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---------------------------------------------------------------------------
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Combined (Unit+Integration) coverage:
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---------------------------------------------------------------------------
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mvn -Dtests.coverage verify jacoco:report
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---------------------------------------------------------------------------
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== Launching and debugging from an IDE
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If you want to run elasticsearch from your IDE, the `gradle run` task
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supports a remote debugging option:
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---------------------------------------------------------------------------
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gradle run --debug-jvm
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---------------------------------------------------------------------------
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== Debugging remotely from an IDE
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If you want to run Elasticsearch and be able to remotely attach the process
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for debugging purposes from your IDE, can start Elasticsearch using `ES_JAVA_OPTS`:
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---------------------------------------------------------------------------
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ES_JAVA_OPTS="-Xdebug -Xrunjdwp:server=y,transport=dt_socket,address=4000,suspend=y" ./bin/elasticsearch
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---------------------------------------------------------------------------
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Read your IDE documentation for how to attach a debugger to a JVM process.
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== Building with extra plugins
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Additional plugins may be built alongside elasticsearch, where their
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dependency on elasticsearch will be substituted with the local elasticsearch
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build. To add your plugin, create a directory called elasticsearch-extra as
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a sibling of elasticsearch. Checkout your plugin underneath elasticsearch-extra
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and the build will automatically pick it up. You can verify the plugin is
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included as part of the build by checking the projects of the build.
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---------------------------------------------------------------------------
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gradle projects
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---------------------------------------------------------------------------
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