Fix support of directories as sources in build files (-Xbuild-file)

#KT-27775 Fixed

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

@@ -16,6 +16,8 @@
 
 package org.jetbrains.kotlin.integration;
 
+import org.jetbrains.kotlin.cli.AbstractCliTest;
+
 import java.io.File;
 
 public class CompilerSmokeTest extends CompilerSmokeTestBase {
@@ -120,4 +122,13 @@ public class CompilerSmokeTest extends CompilerSmokeTestBase {
     public void testPrintVersion() throws Exception {
         runCompiler("test.compile", "-version");
     }
+
+    public void testBuildFile() throws Exception {
+        File buildXml = new File(getTestDataDir(), "build.xml");
+        runCompiler(
+                "buildFile.compile",
+                AbstractCliTest.replacePathsInBuildXml("-Xbuild-file=" + buildXml, getTestDataDir(), tmpdir.getPath())
+        );
+        run("buildFile.run", "-cp", tmpdir.getAbsolutePath(), "MainKt");
+    }
 }

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

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.integration;
 
 import com.intellij.util.ArrayUtil;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.kotlin.test.KotlinTestUtils;
 import org.jetbrains.kotlin.utils.StringsKt;
 
@@ -27,8 +28,13 @@ import java.util.Collection;
 import java.util.Collections;
 
 public abstract class CompilerSmokeTestBase extends KotlinIntegrationTestBase {
+    @NotNull
+    protected String getTestDataDir() {
+        return KotlinTestUtils.getTestDataPathBase() + "/integration/smoke/" + getTestName(true);
+    }
+
     protected int run(String logName, String... args) throws Exception {
-        return runJava(KotlinTestUtils.getTestDataPathBase() + "/integration/smoke/" + getTestName(true), logName, args);
+        return runJava(getTestDataDir(), logName, args);
     }
 
     protected int runCompiler(String logName, String... arguments) throws Exception {