Convert for-loop with Collections.addAll: support primitive types; switch off when count expression is used; wrong contracts removed

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/afterCollectionsAddAllPrimitive.java

@@ -0,0 +1,11 @@
+// "Replace with toArray" "true"
+import java.util.*;
+import java.util.function.Function;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
+
+public class Test {
+  String[] test(int count) {
+      return IntStream.range(0, count).mapToObj(i -> Stream.of("one", "two", "three")).flatMap(Function.identity()).toArray(String[]::new);
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforeCollectionsAddAllPrimitive.java

@@ -0,0 +1,12 @@
+// "Replace with toArray" "true"
+import java.util.*;
+
+public class Test {
+  String[] test(int count) {
+    List<String> result = new ArrayList<>();
+    for(int <caret>i=0; i < count; i++) {
+      Collections.addAll(result, "one", "two", "three");
+    }
+    return result.toArray(new String[result.size()]);
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamApiMigration/beforeCollectionsAddAllWrongLimit.java

@@ -0,0 +1,16 @@
+// "Replace with toArray" "false"
+import java.util.*;
+
+public class Test {
+  Object[] test(List<String[]> list) {
+    List<Object> result = new LinkedList<>();
+    for(String[] str : li<caret>st) {
+      if(str != null) {
+        Collections.addAll(result, str);
+        if(result.size() > 10) break;
+      }
+    }
+    result.sort(null);
+    return result.toArray();
+  }
+}