Brian Norman
106 lines
2.6 KiB
Kotlin
106 lines
2.6 KiB
Kotlin
/*
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* Copyright (C) 2021 Brian Norman
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.bnorm.power
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import com.tschuchort.compiletesting.KotlinCompilation
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import com.tschuchort.compiletesting.SourceFile
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import org.jetbrains.kotlin.name.FqName
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import java.lang.reflect.InvocationTargetException
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import java.lang.reflect.Method
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import kotlin.test.Test
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import kotlin.test.assertEquals
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import kotlin.test.fail
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class DebugFunctionTest {
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@Test
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fun `debug function transformation`() {
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val actual = executeMainDebug(
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"""
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dbg(1 + 2 + 3)
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""".trimIndent(),
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)
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assertEquals(
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"""
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dbg(1 + 2 + 3)
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| 6
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3
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""".trimIndent(),
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actual.trim(),
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)
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}
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@Test
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fun `debug function transformation with message`() {
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val actual = executeMainDebug(
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"""
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dbg(1 + 2 + 3, "Message:")
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""".trimIndent(),
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)
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assertEquals(
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"""
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Message:
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dbg(1 + 2 + 3, "Message:")
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| 6
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3
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""".trimIndent(),
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actual.trim(),
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)
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}
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}
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private fun executeMainDebug(mainBody: String): String {
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val file = SourceFile.kotlin(
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name = "main.kt",
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contents = """
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fun <T> dbg(value: T): T = value
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fun <T> dbg(value: T, msg: String): T {
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throw RuntimeException("result:"+msg)
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return value
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}
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fun main() {
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$mainBody
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}
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""",
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trimIndent = false,
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)
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val result = compile(listOf(file), PowerAssertCompilerPluginRegistrar(setOf(FqName("dbg"))))
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assertEquals(KotlinCompilation.ExitCode.OK, result.exitCode)
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val kClazz = result.classLoader.loadClass("MainKt")
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val main = kClazz.declaredMethods.single { it.name == "main" && it.parameterCount == 0 }
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return getMainResult(main)
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}
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fun getMainResult(main: Method): String {
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try {
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main.invoke(null)
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fail("main did not throw expected exception")
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} catch (t: InvocationTargetException) {
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with(t.cause) {
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if (this is RuntimeException && message != null && message!!.startsWith("result:")) {
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return message!!.substringAfter("result:")
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}
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}
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throw t.cause!!
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}
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}
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