Support FULL_JDK directive in diagnostic tests

compiler/tests-common/org/jetbrains/kotlin/checkers/BaseDiagnosticsTest.kt

@@ -72,7 +72,7 @@ abstract class BaseDiagnosticsTest : KotlinMultiFileTestWithJava<TestModule, Tes
             })
         }
 
-        environment = createEnvironment()
+        environment = createEnvironment(file)
 
         analyzeAndCheck(file, testFiles)
     }

compiler/tests-common/org/jetbrains/kotlin/checkers/KotlinMultiFileTestWithJava.java

@@ -29,6 +29,7 @@ import org.jetbrains.kotlin.config.ContentRootsKt;
 import org.jetbrains.kotlin.config.JVMConfigurationKeys;
 import org.jetbrains.kotlin.script.StandardScriptDefinition;
 import org.jetbrains.kotlin.test.ConfigurationKind;
+import org.jetbrains.kotlin.test.InTextDirectivesUtils;
 import org.jetbrains.kotlin.test.KotlinTestUtils;
 import org.jetbrains.kotlin.test.TestJdkKind;
 import org.jetbrains.kotlin.test.testFramework.KtUsefulTestCase;
@@ -73,10 +74,10 @@ public abstract class KotlinMultiFileTestWithJava<M, F> extends KtUsefulTestCase
     }
 
     @NotNull
-    protected KotlinCoreEnvironment createEnvironment() {
+    protected KotlinCoreEnvironment createEnvironment(@NotNull File file) {
         CompilerConfiguration configuration = KotlinTestUtils.newConfiguration(
                 getConfigurationKind(),
-                getTestJdkKind(),
+                getTestJdkKind(file),
                 CollectionsKt.plus(Collections.singletonList(KotlinTestUtils.getAnnotationsJar()), getExtraClasspath()),
                 isJavaSourceRootNeeded() ? Collections.singletonList(javaFilesDir) : Collections.emptyList()
         );
@@ -108,8 +109,10 @@ public abstract class KotlinMultiFileTestWithJava<M, F> extends KtUsefulTestCase
     }
 
     @NotNull
-    protected TestJdkKind getTestJdkKind() {
-        return TestJdkKind.MOCK_JDK;
+    protected TestJdkKind getTestJdkKind(@NotNull File file) {
+        return InTextDirectivesUtils.isDirectiveDefined(FilesKt.readText(file, Charsets.UTF_8), "FULL_JDK")
+               ? TestJdkKind.FULL_JDK
+               : TestJdkKind.MOCK_JDK;
     }
 
     @NotNull