ExplicitArrayFillingInspection: detect cases when for loop can be replaced with Arrays.fill call (IDEA-185394)

java/java-tests/testData/inspection/explicitArrayFilling/afterConstantRhs.java

@@ -0,0 +1,14 @@
+// "Replace loop with 'Arrays.fill' method call" "true"
+import java.util.Arrays;
+import java.util.List;
+
+public class Test {
+
+  public static<T> void fill(T[] data, T value) {
+      /*comment*/
+      /*in body*/
+      /*in lvalue*/
+      /*in rvalue*/
+      Arrays.fill(data, value);
+  }
+}

java/java-tests/testData/inspection/explicitArrayFilling/afterFieldComments.java

@@ -1,6 +1,6 @@
 import java.util.Arrays;
 
-// "Replace loop with Arrays.setAll" "true"
+// "Replace loop with 'Arrays.setAll' method call" "true"
 public class Test {
     private Object[] data;
 

java/java-tests/testData/inspection/explicitArrayFilling/afterSimple.java

@@ -1,4 +1,4 @@
-// "Replace loop with Arrays.setAll" "true"
+// "Replace loop with 'Arrays.setAll' method call" "true"
 import java.util.Arrays;
 import java.util.List;
 

java/java-tests/testData/inspection/explicitArrayFilling/beforeConstantRhs.java

@@ -0,0 +1,13 @@
+// "Replace loop with 'Arrays.fill' method call" "true"
+import java.util.Arrays;
+import java.util.List;
+
+public class Test {
+
+  public static<T> void fill(T[] data, T value) {
+    for(int <caret>idx = 0; (/*comment*/data).length > idx; idx+=1) {
+      /*in body*/
+      data[/*in lvalue*/idx] = /*in rvalue*/value;
+    }
+  }
+}

java/java-tests/testData/inspection/explicitArrayFilling/beforeFieldComments.java

@@ -1,4 +1,4 @@
-// "Replace loop with Arrays.setAll" "true"
+// "Replace loop with 'Arrays.setAll' method call" "true"
 public class Test {
     private Object[] data;
 

java/java-tests/testData/inspection/explicitArrayFilling/beforeSimple.java

@@ -1,4 +1,4 @@
-// "Replace loop with Arrays.setAll" "true"
+// "Replace loop with 'Arrays.setAll' method call" "true"
 import java.util.Arrays;
 import java.util.List;
 

java/java-tests/testData/inspection/explicitArrayFilling/beforeStartFrom1.java

@@ -1,4 +1,4 @@
-// "Replace loop with Arrays.setAll" "false"
+// "Fix all 'Explicit array filling' problems in file" "false"
 import java.util.Arrays;
 import java.util.List;
 

java/java-tests/testData/inspection/explicitArrayFilling/beforeUnsupportedType.java

@@ -1,4 +1,4 @@
-// "Replace loop with Arrays.setAll" "false"
+// "Fix all 'Explicit array filling' problems in file" "false"
 import java.util.Arrays;
 import java.util.List;