Warn when running the compiler under Java 6 or 7

(cherry picked from commit 5537800)

(cherry picked from commit 5614874)

compiler/tests/org/jetbrains/kotlin/cli/AbstractCliTest.java

@@ -74,12 +74,13 @@ public abstract class AbstractCliTest extends TestCaseWithTmpdir {
             @NotNull BinaryVersion version
     ) {
         String testDataAbsoluteDir = new File(testDataDir).getAbsolutePath();
-        String normalizedOutputWithoutExitCode = pureOutput
+        String normalizedOutputWithoutExitCode = StringUtil.convertLineSeparators(pureOutput)
                 .replace(testDataAbsoluteDir, "$TESTDATA_DIR$")
                 .replace(FileUtil.toSystemIndependentName(testDataAbsoluteDir), "$TESTDATA_DIR$")
                 .replace(PathUtil.getKotlinPathsForDistDirectory().getHomePath().getAbsolutePath(), "$PROJECT_DIR$")
                 .replace("expected version is " + version, "expected version is $ABI_VERSION$")
                 .replace("\\", "/")
+                .replaceAll("^.+running the Kotlin compiler under Java 6 or 7 is unsupported and will no longer be possible in a future update\\.\n", "")
                 .replace(KotlinCompilerVersion.VERSION, "$VERSION$");
 
         return normalizedOutputWithoutExitCode + exitCode;

compiler/tests/org/jetbrains/kotlin/integration/CompilerSmokeTestBase.java

@@ -43,6 +43,7 @@ public abstract class CompilerSmokeTestBase extends KotlinIntegrationTestBase {
         javaArgs.add("org.jetbrains.kotlin.cli.jvm.K2JVMCompiler");
 
         Collections.addAll(javaArgs, arguments);
+        javaArgs.add("-Xskip-java-check");
 
         return run(logName, ArrayUtil.toStringArray(javaArgs));
     }

compiler/tests/org/jetbrains/kotlin/multiplatform/AbstractMultiPlatformIntegrationTest.kt

@@ -39,7 +39,7 @@ abstract class AbstractMultiPlatformIntegrationTest : KtUsefulTestCase() {
 
         val result = buildString {
             val (commonOutput, commonExitCode) = AbstractCliTest.executeCompilerGrabOutput(K2MetadataCompiler(), listOf(
-                    commonSrc.absolutePath, "-d", commonDest.absolutePath
+                    commonSrc.absolutePath, "-d", commonDest.absolutePath, "-Xskip-java-check"
             ))
             appendln("-- Common --")
             appendln("Exit code: $commonExitCode")
@@ -50,7 +50,7 @@ abstract class AbstractMultiPlatformIntegrationTest : KtUsefulTestCase() {
                 val (jvmOutput, jvmExitCode) = AbstractCliTest.executeCompilerGrabOutput(K2JVMCompiler(), listOf(
                         jvmSrc.absolutePath, commonSrc.absolutePath,
                         "-d", jvmDest.absolutePath,
-                        "-Xmulti-platform"
+                        "-Xmulti-platform", "-Xskip-java-check"
                 ))
                 appendln("-- JVM --")
                 appendln("Exit code: $jvmExitCode")
@@ -62,7 +62,7 @@ abstract class AbstractMultiPlatformIntegrationTest : KtUsefulTestCase() {
                 val (jsOutput, jsExitCode) = AbstractCliTest.executeCompilerGrabOutput(K2JSCompiler(), listOf(
                         jsSrc.absolutePath, commonSrc.absolutePath,
                         "-output", jsDest.absolutePath,
-                        "-Xmulti-platform"
+                        "-Xmulti-platform", "-Xskip-java-check"
                 ))
                 appendln("-- JS --")
                 appendln("Exit code: $jsExitCode")