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Build: Use branch specific refspec sysprop for bwc builds #29299

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Mar 29, 2018
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Build: Use branch specific refspec sysprop for bwc builds #29299

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Build: Use branch specific refspec sysprop for bwc builds
rjernst Mar 29, 2018
24fb4ba
update test doc
rjernst Mar 29, 2018
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8 changes: 4 additions & 4 deletions TESTING.asciidoc
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Expand Up @@ -476,12 +476,12 @@ branch. Finally, on a release branch, it will test against the most recent relea
=== BWC Testing against a specific remote/branch

Sometimes a backward compatibility change spans two versions. A common case is a new functionality
that needs a BWC bridge in and an unreleased versioned of a release branch (for example, 5.x).
that needs a BWC bridge in an unreleased versioned of a release branch (for example, 5.x).
To test the changes, you can instruct Gradle to build the BWC version from a another remote/branch combination instead of
pulling the release branch from GitHub. You do so using the `tests.bwc.remote` and `tests.bwc.refspec` system properties:
pulling the release branch from GitHub. You do so using the `tests.bwc.remote` and `tests.bwc.refspec.BRANCH` system properties:

-------------------------------------------------
./gradlew check -Dtests.bwc.remote=${remote} -Dtests.bwc.refspec=index_req_bwc_5.x
./gradlew check -Dtests.bwc.remote=${remote} -Dtests.bwc.refspec.5.x=index_req_bwc_5.x
-------------------------------------------------

The branch needs to be available on the remote that the BWC makes of the
Expand All @@ -496,7 +496,7 @@ will need to:
will contain your change.
. Create a branch called `index_req_bwc_5.x` off `5.x`. This will contain your bwc layer.
. Push both branches to your remote repository.
. Run the tests with `./gradlew check -Dtests.bwc.remote=${remote} -Dtests.bwc.refspec=index_req_bwc_5.x`.
. Run the tests with `./gradlew check -Dtests.bwc.remote=${remote} -Dtests.bwc.refspec.5.x=index_req_bwc_5.x`.

== Test coverage analysis

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2 changes: 1 addition & 1 deletion distribution/bwc/build.gradle
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Expand Up @@ -91,7 +91,7 @@ subprojects {

String buildMetadataKey = "bwc_refspec_${project.path.substring(1)}"
task checkoutBwcBranch(type: LoggedExec) {
String refspec = System.getProperty("tests.bwc.refspec", buildMetadata.get(buildMetadataKey, "${remote}/${bwcBranch}"))
String refspec = System.getProperty("tests.bwc.refspec.${bwcBranch}", buildMetadata.get(buildMetadataKey, "${remote}/${bwcBranch}"))
dependsOn fetchLatest
workingDir = checkoutDir
commandLine = ['git', 'checkout', refspec]
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