Add test for javac arguments passed to kapt

Author: tschuchortdev

core/src/main/kotlin/com/tschuchort/compiletesting/KotlinCompilation.kt

@@ -361,7 +361,6 @@ class KotlinCompilation : AbstractKotlinCompilation<K2JVMCompilerArguments>() {
 		while (i < options.size) {
 			val option = options[i]
 			if (option.startsWith("-") || option.startsWith("--")) {
-				// Check if the option contains an equal sign
 				if (option.contains("=")) {
 					val (key, value) = option.split("=", limit = 2)
 					result[key] = value

core/src/test/kotlin/com/tschuchort/compiletesting/KotlinCompilationTests.kt

@@ -17,6 +17,7 @@ import javax.annotation.processing.RoundEnvironment
 import javax.lang.model.element.TypeElement
 import org.mockito.kotlin.*
 import java.nio.file.Path
+import java.util.regex.Pattern
 import kotlin.io.path.createDirectory
 import kotlin.io.path.createFile
 import kotlin.io.path.writeText
@@ -968,5 +969,28 @@ class KotlinCompilationTests {
 		assertThat(result.exitCode).isEqualTo(ExitCode.OK)
 	}
 
+	@Test
+	fun `javac arguments are passed to kapt`() {
+		val jSource = SourceFile.java(
+			"JSource.java", """
+				package com.tschuchort.compiletesting;
+			
+				@ProcessElem
+				class JSource {
+				}
+					"""
+		)
+
+		val result = defaultCompilerConfig().apply {
+			sources = listOf(jSource)
+			annotationProcessors = listOf(kotlinTestProc)
+			inheritClassPath = true
+			javacArguments += listOf("-Xlint")
+		}.compile()
+
+		assertThat(result.exitCode).isEqualTo(ExitCode.OK)
+		assertThat(result.messages).containsPattern(Pattern.compile("\\[kapt\\] All Javac options: \\{.*?-Xlint.*?\\}"))
+	}
+
 	class InheritedClass {}
 }