-
Notifications
You must be signed in to change notification settings - Fork 53
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Added API for getting coverage inside a running application, instrume…
…nted offline - upgraded IntelliJ Coverage version to `1.0.729` - added Kover API to get code coverage - expanded documentation PR #435 Co-authored-by: Vsevolod Tolstopyatov <qwwdfsad@gmail.com> Co-authored-by: Leonid Startsev <sandwwraith@users.noreply.github.com>
- Loading branch information
3 people
authored
Jul 26, 2023
1 parent
4ab9591
commit a74f3ba
Showing
15 changed files
with
529 additions
and
112 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| /* | ||
| * Copyright 2000-2023 JetBrains s.r.o. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| plugins { | ||
| kotlin("jvm") apply false | ||
| alias(libs.plugins.kotlinx.dokka) apply false | ||
| alias(libs.plugins.kotlinx.binaryCompatibilityValidator) apply false | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,165 @@ | ||
| # Offline instrumentation | ||
|
|
||
| ## Description | ||
|
|
||
| To collect code coverage for JVM applications, Kover uses instrumentation -- modification of the bytecode in order to place entry counters in certain blocks of code. | ||
|
|
||
| Offline instrumentation is a transformation of the bytecode in compiled class files located somewhere in a file system. | ||
| Offline instrumentation is suitable when using runtime environments that do not support Java agents. | ||
|
|
||
| ## Working steps | ||
|
|
||
| ### Class instrumentation | ||
|
|
||
| For instrumentation, you must first build the application, then the root directories for the class files | ||
| must be passed to Kover CLI as arguments, see [Kover CLI](../cli#offline-instrumentation) for the technical detils. | ||
|
|
||
| ### Dump coverage result | ||
|
|
||
| To run classes instrumented offline, you'll need to add `org.jetbrains.kotlinx:kover-offline` artifact to the application's classpath. | ||
|
|
||
| There are two ways to get coverage: | ||
|
|
||
| - Run tests to get a binary report file, then run [Kover CLI](../cli#generating-reports) to get HTML or XML report from binary report | ||
| - Call `KoverRuntime.collectByDirs` or `KoverRuntime.collect` in the same process after the tests are finished | ||
|
|
||
| One or both of these ways can be used at the same time. | ||
|
|
||
| #### Binary report file | ||
|
|
||
| You'll also need to pass the system property `kover.offline.report.path` to the application with the path where you want a binary report to be saved. | ||
| This binary file can be used to generate human-readable reports using [Kover CLI](../cli#generating-reports). | ||
|
|
||
| #### In-process reporting | ||
|
|
||
| Inside the same JVM process in which the tests were run, call Java static method `kotlinx.kover.offline.runtime.api.KoverRuntime.collectByDirs` or `kotlinx.kover.offline.runtime.api.KoverRuntime.collect`. | ||
|
|
||
| For correct generation of the report, it is necessary to pass the bytecode of the non-instrumented classes. | ||
| This can be done by specifying the directories where the class-files are stored, or a byte array with the bytecode of the application non-instrumented classes. | ||
|
|
||
| See [example](#example-of-using-the-api). | ||
|
|
||
| ## Examples | ||
|
|
||
| ### Gradle example for binary report | ||
|
|
||
| Example of a custom binary report production using Kover tool CLI in Gradle | ||
| ``` | ||
| plugins { | ||
| kotlin("jvm") version "1.8.0" | ||
| application | ||
| } | ||
| repositories { | ||
| mavenCentral() | ||
| } | ||
| configurations.register("koverCli") { | ||
| isVisible = false | ||
| isCanBeConsumed = false | ||
| isTransitive = true | ||
| isCanBeResolved = true | ||
| } | ||
| dependencies { | ||
| runtimeOnly("org.jetbrains.kotlinx:kover-offline-runtime:0.7.2") | ||
| add("koverCli", "org.jetbrains.kotlinx:kover-cli:0.7.2") | ||
| testImplementation(kotlin("test")) | ||
| } | ||
| tasks.test { | ||
| useJUnitPlatform() | ||
| } | ||
| kotlin { | ||
| jvmToolchain(11) | ||
| } | ||
| fun cliJar(): File { | ||
| val cliConfig = configurations.getByName("koverCli") | ||
| return cliConfig.filter {it.name.startsWith("kover-cli")}.singleFile | ||
| } | ||
| tasks.compileKotlin { | ||
| doLast { | ||
| val outputDir = destinationDirectory.get().asFile | ||
| exec { | ||
| commandLine( | ||
| "java", | ||
| "-jar", | ||
| cliJar().canonicalPath, | ||
| "instrument", | ||
| outputDir, | ||
| "--dest", | ||
| outputDir, | ||
| "--hits", | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| val binaryReport = layout.buildDirectory.file("kover/report.ic").get().asFile | ||
| tasks.test { | ||
| // set system property for binary report path | ||
| systemProperty("kover.offline.report.path", binaryReport.absolutePath) | ||
| } | ||
| tasks.register("koverReport") { | ||
| dependsOn(tasks.test) | ||
| doLast { | ||
| val args = mutableListOf<String>() | ||
| args += "java" | ||
| args += "-jar" | ||
| args += cliJar().canonicalPath | ||
| args += "report" | ||
| args += binaryReport.absolutePath | ||
| args += "--classfiles" | ||
| args += tasks.compileKotlin.get().destinationDirectory.get().asFile.absolutePath | ||
| args += "--classfiles" | ||
| args += tasks.compileJava.get().destinationDirectory.get().asFile.absolutePath | ||
| args += "--xml" | ||
| args += layout.buildDirectory.file("reports/kover/report.xml").get().asFile.absolutePath | ||
| args += "--html" | ||
| args += layout.buildDirectory.file("reports/kover/html").get().asFile.absolutePath | ||
| sourceSets.main.get().kotlin.sourceDirectories.files.forEach { src -> | ||
| args += "--src" | ||
| args += src.canonicalPath | ||
| } | ||
| exec { commandLine(args) } | ||
| } | ||
| } | ||
| ``` | ||
|
|
||
| ### Example of using the API | ||
| ```kotlin | ||
| // the directory with class files can be transferred using the system property, any other methods are possible | ||
| val outputDir = File(System.getProperty("output.dir")) | ||
| val coverage = KoverRuntime.collectByDirs(listOf(outputDir)) | ||
|
|
||
| // check coverage of `readState` method | ||
| assertEquals(3, coverage.size) | ||
| val coverageByClass = coverage.associateBy { cov -> cov.className } | ||
|
|
||
| val mainClassCoverage = coverageByClass.getValue("org.jetbrains.kotlinx.kover.MainClass") | ||
| assertEquals("Main.kt", mainClassCoverage.fileName) | ||
| assertEquals(4, mainClassCoverage.methods.size) | ||
|
|
||
| val coverageBySignature = mainClassCoverage.methods.associateBy { meth -> meth.signature } | ||
| val readStateCoverage = coverageBySignature.getValue("readState()Lorg/jetbrains/kotlinx/kover/DataClass;") | ||
|
|
||
| assertEquals(1, readStateCoverage.hit) | ||
| assertEquals(1, readStateCoverage.lines.size) | ||
| assertEquals(6, readStateCoverage.lines[0].lineNumber) | ||
| assertEquals(1, readStateCoverage.lines[0].hit) | ||
| assertEquals(0, readStateCoverage.lines[0].branches.size) | ||
| ``` | ||
|
|
||
| see [full example](https://github.com/Kotlin/kotlinx-kover/tree/main/kover-offline-runtime/examples/runtime-api) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
58 changes: 58 additions & 0 deletions
58
kover-offline-runtime/examples/runtime-api/build.gradle.kts
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| plugins { | ||
| kotlin("jvm") version "1.8.0" | ||
| } | ||
|
|
||
| group = "org.jetbrains" | ||
|
|
||
| repositories { | ||
| mavenCentral() | ||
| } | ||
|
|
||
| configurations.register("koverCli") { | ||
| isVisible = false | ||
| isCanBeConsumed = false | ||
| isTransitive = true | ||
| isCanBeResolved = true | ||
| } | ||
|
|
||
| dependencies { | ||
| add("koverCli", "org.jetbrains.kotlinx:kover-cli:0.7.2") | ||
|
|
||
| implementation("org.jetbrains.kotlinx:kover-offline-runtime:0.7.2") | ||
|
|
||
| testImplementation(kotlin("test")) | ||
| } | ||
|
|
||
| tasks.test { | ||
| useJUnitPlatform() | ||
|
|
||
| systemProperty("output.dir", tasks.compileKotlin.get().destinationDirectory.get().asFile.absolutePath) | ||
| } | ||
|
|
||
| kotlin { | ||
| jvmToolchain(8) | ||
| } | ||
|
|
||
| fun cliJar(): File { | ||
| val cliConfig = configurations.getByName("koverCli") | ||
| return cliConfig.filter {it.name.startsWith("kover-cli")}.singleFile | ||
| } | ||
|
|
||
| tasks.compileKotlin { | ||
| doLast { | ||
| val outputDir = destinationDirectory.get().asFile | ||
|
|
||
| exec { | ||
| commandLine( | ||
| "java", | ||
| "-jar", | ||
| cliJar().canonicalPath, | ||
| "instrument", | ||
| outputDir, | ||
| "--dest", | ||
| outputDir, | ||
| "--hits", | ||
| ) | ||
| } | ||
| } | ||
| } |
Oops, something went wrong.