Check output in Maven IC tests

libraries/tools/kotlin-maven-plugin-test/src/test/java/org.jetbrains.kotlin.maven/IncrementalCompilationIT.java

@@ -1,6 +1,8 @@
 package org.jetbrains.kotlin.maven;
 
+import org.jetbrains.annotations.NotNull;
 import org.junit.Test;
+
 import java.io.File;
 
 public class IncrementalCompilationIT extends MavenITBase {
@@ -9,10 +11,20 @@ public class IncrementalCompilationIT extends MavenITBase {
         MavenProject project = new MavenProject("kotlinSimple");
         project.exec("package")
                .succeeded()
-               .fileExists("target/classes/test.properties")
+               .filesExist(kotlinSimpleOutputPaths())
                .compiledKotlin("src/main/kotlin/A.kt", "src/main/kotlin/useA.kt", "src/main/kotlin/Dummy.kt");
     }
 
+    @NotNull
+    private String[] kotlinSimpleOutputPaths() {
+        return new String[]{
+            "target/classes/test.properties",
+            "target/classes/A.class",
+            "target/classes/UseAKt.class",
+            "target/classes/Dummy.class"
+        };
+    }
+
     @Test
     public void testNoChanges() throws Exception {
         MavenProject project = new MavenProject("kotlinSimple");
@@ -20,6 +32,7 @@ public class IncrementalCompilationIT extends MavenITBase {
 
         project.exec("package")
                .succeeded()
+               .filesExist(kotlinSimpleOutputPaths())
                .compiledKotlin();
     }
 
@@ -40,6 +53,7 @@ public class IncrementalCompilationIT extends MavenITBase {
         MavenTestUtils.replaceFirstInFile(aKt, replacement, original);
         project.exec("package")
                .succeeded()
+               .filesExist(kotlinSimpleOutputPaths())
                .compiledKotlin("src/main/kotlin/A.kt", "src/main/kotlin/useA.kt");
 
     }
@@ -54,6 +68,7 @@ public class IncrementalCompilationIT extends MavenITBase {
 
         project.exec("package")
                .succeeded()
+               .filesExist(kotlinSimpleOutputPaths())
                .compiledKotlin("src/main/kotlin/A.kt", "src/main/kotlin/useA.kt");
 
         // todo rebuild and compare output

libraries/tools/kotlin-maven-plugin-test/src/test/java/org.jetbrains.kotlin.maven/MavenExecutionResult.java

@@ -111,12 +111,14 @@ class MavenExecutionResult {
         });
     }
 
-    MavenExecutionResult fileExists(@NotNull final String path) throws Exception {
+    MavenExecutionResult filesExist(@NotNull final String... paths) throws Exception {
         return check(new Action<MavenExecutionResult>() {
             @Override
             public void run(MavenExecutionResult execResult) {
-                File file = new File(workingDir, path);
+                for (String path : paths) {
-                Assert.assertTrue(file + " does not exist", file.exists());
+                    File file = new File(workingDir, path);
+                    Assert.assertTrue(file + " does not exist", file.exists());
+                }
             }
         });
     }