Prepare kotlin-power-assert files for git merge with Kotlin

plugins/power-assert/test/com/bnorm/power/DebugFunctionTest.kt

@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2021 Brian Norman
+ *
+ * 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.
+ */
+
+package com.bnorm.power
+
+import com.tschuchort.compiletesting.KotlinCompilation
+import com.tschuchort.compiletesting.SourceFile
+import org.jetbrains.kotlin.name.FqName
+import java.lang.reflect.InvocationTargetException
+import java.lang.reflect.Method
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.fail
+
+class DebugFunctionTest {
+  @Test
+  fun `debug function transformation`() {
+    val actual = executeMainDebug(
+      """
+      dbg(1 + 2 + 3)
+      """.trimIndent(),
+    )
+    assertEquals(
+      """
+      dbg(1 + 2 + 3)
+            |   |
+            |   6
+            3
+      """.trimIndent(),
+      actual.trim(),
+    )
+  }
+
+  @Test
+  fun `debug function transformation with message`() {
+    val actual = executeMainDebug(
+      """
+      dbg(1 + 2 + 3, "Message:")
+      """.trimIndent(),
+    )
+    assertEquals(
+      """
+      Message:
+      dbg(1 + 2 + 3, "Message:")
+            |   |
+            |   6
+            3
+      """.trimIndent(),
+      actual.trim(),
+    )
+  }
+}
+
+private fun executeMainDebug(mainBody: String): String {
+  val file = SourceFile.kotlin(
+    name = "main.kt",
+    contents = """
+fun <T> dbg(value: T): T = value
+
+fun <T> dbg(value: T, msg: String): T {
+    throw RuntimeException("result:"+msg)
+    return value
+}
+
+fun main() {
+  $mainBody
+}
+""",
+    trimIndent = false,
+  )
+
+  val result = compile(listOf(file), PowerAssertCompilerPluginRegistrar(setOf(FqName("dbg"))))
+  assertEquals(KotlinCompilation.ExitCode.OK, result.exitCode)
+
+  val kClazz = result.classLoader.loadClass("MainKt")
+  val main = kClazz.declaredMethods.single { it.name == "main" && it.parameterCount == 0 }
+  return getMainResult(main)
+}
+
+fun getMainResult(main: Method): String {
+  try {
+    main.invoke(null)
+    fail("main did not throw expected exception")
+  } catch (t: InvocationTargetException) {
+    with(t.cause) {
+      if (this is RuntimeException && message != null && message!!.startsWith("result:")) {
+        return message!!.substringAfter("result:")
+      }
+    }
+    throw t.cause!!
+  }
+}