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ASF GitHub Bot commented on DRILL-6249: --------------------------------------- ilooner commented on a change in pull request #1251: DRILL-6249: Adding more unit testing documentation. URL: https://github.com/apache/drill/pull/1251#discussion_r187162074 ########## File path: docs/dev/GeneratedCode.md ########## @@ -0,0 +1,42 @@ +# Testing Generated Code + +## Writing Unit Tests For Generated Code + +An example of unit testing generated code without running all of Drill is the **priorityQueueOrderingTest()** test in +[TopNBatchTest](../../exec/java-exec/src/test/java/org/apache/drill/exec/physical/impl/TopN/TopNBatchTest.java). That test tests the +[PriorityQueueTemplate](../../exec/java-exec/src/main/java/org/apache/drill/exec/physical/impl/TopN/PriorityQueueTemplate.java) class separately from the rest of Drill. + +The main accomplished by creating instances of the following classes: + + * [FunctionLookupContext](../../exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/FunctionLookupContext.java) + * [CodeCompiler](../../exec/java-exec/src/main/java/org/apache/drill/exec/compile/CodeCompiler.java) + +## Creating A [FunctionLookupContext](../../exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/FunctionLookupContext.java) + +``` +new FunctionImplementationRegistry(drillConfig) +``` + +## Creating A [CodeCompiler](../../exec/java-exec/src/main/java/org/apache/drill/exec/compile/CodeCompiler.java) + + 1. Create a [DrillConfig](../../common/src/main/java/org/apache/drill/common/config/DrillConfig.java) as shown in [MockingComponents.md](MockingComponents.md). + 1. Create a [SystemOptionManager](../../exec/java-exec/src/main/java/org/apache/drill/exec/server/options/SystemOptionManager.java) as shown in + [MockingComponents.md](MockingComponents.md). Review comment: I agree that mocking libraries are not a good way to test. I meant this to be a cheat sheet about how to instantiate classes, not a description of how to use a mocking library. I have renamed it to InstantiatingComponents.md to avoid this confusion. I am also updating the document with references to OperatorFixture and ClusterFixture where appropriate. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org > Add Markdown Docs for Unit Testing and Link to it in README.md > -------------------------------------------------------------- > > Key: DRILL-6249 > URL: https://issues.apache.org/jira/browse/DRILL-6249 > Project: Apache Drill > Issue Type: Improvement > Reporter: Timothy Farkas > Assignee: Timothy Farkas > Priority: Major > Labels: ready-to-commit > Fix For: 1.14.0 > > > I am working on a presentation about how to use the unit testing utilities in > Drill. Instead of writing the doc and having it be lost in Google Drive > somewhere I am going to add a Markdown doc to the drill repo and link to it > in the README.md. This is appropriate since these docs will only be used by > developers, and the way we unit test will change as the code changes. So the > unit testing docs should be kept in the same repo as the code so it can be > updated and kept in sync with the rest of Drill. -- This message was sent by Atlassian JIRA (v7.6.3#76005)