Reintroduce gradle build and introduce mocha-backed tests

Author: shabunc

.idea/runConfigurations/build.xml

@@ -34,39 +34,23 @@ Where possible options include:<br/>
   git submodule update
   ```
 
-3. install dependencies
-  * using installed node.js:
-  
-  ```shell
-  npm install
-  ```
-  
-  * without installing node.js:
-
-  ```shell
-  ant -f build.xml update.tools
-  ant -f build.xml update.node.modules
-  ```
-
-4. setup path to node interpreter in IDEA (Languages & Frameworks | Node.js and NPM)
-
-5. Convert the tool to Javascript (and run the unit tests)
+3. Build javascript target (and run the unit tests)
 
 ```shell
 ./gradlew build
 ```
 
-6. (optional) Run the unit tests
+4. (optional) Run the unit tests
 
 ```shell
-ant -f build.xml run.test.for.testData
+./gradlew test
 ```
 
-7. Run the tool in one of these ways:
+5. Run the tool in one of these ways:
   * Run it with node.js (Note: the root of the project should be working dir):
 
     ```shell
-    node out/production/ts2kt/ts2kt.js path/to/input.d.ts path/to/output.kt
+    node build/distrib/ts2kt.js path/to/input.d.ts path/to/output.kt
     ```
   * Directly call translateToFile_puj7f4$ from JS (translateToFile in code).
   * Create run configuration like shared jq and run it.

.idea/runConfigurations/test.xml

@@ -0,0 +1,95 @@
+plugins {
+  id("kotlin2js")
+  id "com.moowork.node" version "1.2.0"
+}
+
+repositories {
+  mavenCentral()
+  jcenter()
+}
+
+dependencies {
+  implementation("org.jetbrains.kotlin:kotlin-stdlib-js:$gradle.kotlinVersion")
+}
+
+def testDistribPath = "${project.buildDir}/test"
+def distribPath = "${project.buildDir}/distrib"
+def testNodeModulesPath = "${testDistribPath}/node_modules"
+
+node {
+  download = true
+  version = '11.1.0'
+}
+
+task addTestPackageJson(type: Copy) {
+  from "${projectDir}/test/config/package.test.json"
+  into testDistribPath
+  rename "package.test.json", "package.json"
+}
+
+task installTestNpmDependencies(type: NpmTask) {
+  dependsOn = [
+      nodeSetup,
+      addTestPackageJson,
+  ]
+  args = ['install', '--prefix', testDistribPath]
+}
+
+compileKotlin2Js {
+  kotlinOptions {
+    outputFile = "${distribPath}/ts2kt.js"
+    sourceMap = true
+    freeCompilerArgs += ["-output-prefix", "${projectDir}/shebang.txt"]
+
+    moduleKind = 'commonjs'
+  }
+}
+
+task fetchBuildableDependencies(type: Copy) {
+  from "${distribPath}/ts2kt.js"
+  into testNodeModulesPath
+}
+
+task copyTestFiles(type: Copy) {
+  from "${projectDir}/test"
+  into testDistribPath
+
+  include "**/*.js"
+}
+
+task prepareTestDistrib {
+  dependsOn = [
+      copyTestFiles,
+      fetchBuildableDependencies,
+      installTestNpmDependencies,
+  ]
+}
+
+task runTests(type: NodeTask) {
+  dependsOn = [prepareTestDistrib]
+  script = file("${testDistribPath}/node_modules/mocha/bin/mocha")
+
+  def reporter = project.findProperty('reporter') ?: 'mocha-simple-html-reporter'
+  args = [
+      "--reporter", reporter
+  ]
+
+  if (reporter == 'mocha-simple-html-reporter') {
+    args += ["--reporter-options", "output=${project.buildDir}/report.html"]
+  }
+
+
+  def testsGrep = project.findProperty('testsGrep') ?: 'short:'
+  if (testsGrep != "ALL") {
+    args += ["--grep", testsGrep]
+  }
+
+  args += [
+      "${testDistribPath}/test_runner.js"
+  ]
+}
+
+fetchBuildableDependencies.dependsOn = [compileKotlin2Js]
+test.dependsOn = [
+    runTests
+]