Gradle, js, karma: source maps support

#KT-31478
	#KT-31011
	#KT-30573

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/NpmVersions.kt

@@ -38,6 +38,7 @@ class NpmVersions {
     val karmaWebpack = NpmPackageVersion("karma-webpack", "*")
     val karmaCoverage = NpmPackageVersion("karma-coverage", "*")
 
+    val karmaSourceMapLoader = NpmPackageVersion("karma-sourcemap-loader", "*")
     val karmaSourceMapSupport = NpmPackageVersion("karma-source-map-support", "1.4.0")
 
     val kotlinNodeJsTestRunner = KotlinGradleNpmPackage("test-nodejs-runner")

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/subtargets/KotlinNodeJs.kt

@@ -34,7 +34,6 @@ class KotlinNodeJs(target: KotlinJsTarget) :
             val compileKotlinTask = compilation.compileKotlinTask
             runTask.dependsOn(target.project.nodeJs.root.npmResolveTask, compileKotlinTask)
 
-            val npmProject = compilation.npmProject
             runTask.args(compileKotlinTask.outputFile)
         }
 

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/KotlinJsTest.kt

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.gradle.targets.js.testing
 
 import groovy.lang.Closure
 import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.InputFile
 import org.gradle.api.tasks.Internal
 import org.gradle.api.tasks.SkipWhenEmpty
 import org.gradle.process.internal.DefaultProcessForkOptions
@@ -22,6 +23,7 @@ import org.jetbrains.kotlin.gradle.targets.js.testing.karma.KotlinKarma
 import org.jetbrains.kotlin.gradle.targets.js.testing.mocha.KotlinMocha
 import org.jetbrains.kotlin.gradle.targets.js.testing.nodejs.KotlinNodeJsTestRunner
 import org.jetbrains.kotlin.gradle.tasks.KotlinTest
+import java.io.File
 
 open class KotlinJsTest : KotlinTest(), RequiresNpmDependencies {
     @Internal
@@ -37,6 +39,9 @@ open class KotlinJsTest : KotlinTest(), RequiresNpmDependencies {
     @Internal
     override lateinit var compilation: KotlinJsCompilation
 
+    val entry: File
+        @InputFile get() = compilation.compileKotlinTask.outputFile
+
     val compilationId: String
         @Input get() = compilation.let {
             val target = it.target

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KotlinKarma.kt

@@ -55,8 +55,10 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
         useTeamcityReporter()
         useMocha()
         useWebpack()
+        useSourceMapSupport()
 
         config.singleRun = true
+        config.autoWatch = false
     }
 
     private fun useTeamcityReporter() {
@@ -64,6 +66,11 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
         config.reporters.add("teamcity")
     }
 
+    internal fun watch() {
+        config.singleRun = false
+        config.autoWatch = true
+    }
+
     fun useConfigDirectory(dir: File) {
         configDirectory = dir
     }
@@ -157,11 +164,13 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
     }
 
     fun useSourceMapSupport() {
-        config.frameworks.add("source-map-support")
-        requiredDependencies.add(versions.karmaSourceMapSupport)
-
+        requiredDependencies.add(versions.karmaSourceMapLoader)
         sourceMaps = true
         addPreprocessor("sourcemap")
+
+        // stacktraces with sourcemaps
+        requiredDependencies.add(versions.karmaSourceMapSupport)
+        config.frameworks.add("source-map-support")
     }
 
     private fun addPreprocessor(name: String, predicate: (String) -> Boolean = { true }) {
@@ -219,7 +228,7 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
 
         val args = nodeJsArgs +
                 nodeModules.map { npmProject.require(it) } +
-                listOf("start", karmaConfJs.absolutePath)
+                listOf("start", karmaConfJs.absolutePath, "--debug")
 
         return object : TCServiceMessagesTestExecutionSpec(
             forkOptions,
@@ -244,8 +253,9 @@ class KotlinKarma(override val compilation: KotlinJsCompilation) : KotlinJsTestF
             override fun createClient(testResultProcessor: TestResultProcessor, log: Logger) =
                 object : TCServiceMessagesClient(testResultProcessor, clientSettings, log) {
                     override fun printNonTestOutput(actualText: String) {
-                        suppressedOutput.appendln(actualText)
-                        progressLogger.progress(actualText)
+                        val value = actualText.trimEnd()
+                        suppressedOutput.appendln(value)
+                        progressLogger.progress(value)
                     }
 
                     val baseTestNameSuffix get() = settings.testNameSuffix

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/testing/karma/KramaConfig.kt

@@ -13,6 +13,7 @@ class KarmaConfig {
     val files: MutableList<String> = mutableListOf()
     val frameworks: MutableList<String> = mutableListOf()
     val browsers: MutableList<String> = mutableListOf()
+    val customLaunchers: MutableMap<String, CustomLauncher> = mutableMapOf()
     val reporters: MutableList<String> = mutableListOf()
     val preprocessors: MutableMap<String, MutableList<String>> = mutableMapOf()
     var coverageReporter: CoverageReporter? = null
@@ -35,6 +36,11 @@ class KarmaConfig {
         }
     }
 
+    class CustomLauncher(var base: String) {
+        val flags = mutableListOf<String>()
+        var debug: Boolean? = null
+    }
+
     override fun toString(): String {
         return "KarmaConfig(singleRun=$singleRun, autoWatch=$autoWatch, basePath=$basePath, files=$files, frameworks=$frameworks, browsers=$browsers, reporters=$reporters, preprocessors=$preprocessors, coverageReporter=$coverageReporter)"
     }