[java-postfix] IDEA-296188 Erroneous Arrays.stream completion in array field assignment

GitOrigin-RevId: b48d3b0ffaa8abd3e3676a6a02880ea5a691173b

java/java-impl/src/com/intellij/codeInsight/template/postfix/templates/StreamPostfixTemplate.java

@@ -27,6 +27,8 @@ public class StreamPostfixTemplate extends StringBasedPostfixTemplate {
   private static final Condition<PsiElement> IS_SUPPORTED_ARRAY = element -> {
     if (!(element instanceof PsiExpression)) return false;
 
+    if (element instanceof PsiAssignmentExpression && element.getParent() instanceof PsiExpressionStatement) return false;
+
     PsiType type = ((PsiExpression)element).getType();
     if (!(type instanceof PsiArrayType)) return false;
 

java/java-tests/testData/codeInsight/template/postfix/templates/stream/assignment.java

@@ -0,0 +1,9 @@
+package templates;
+
+public class Foo {
+  public static void main(String[] args) {
+    Object[] a;
+    Object o;
+    a = o.str<caret>
+  }
+}

java/java-tests/testData/codeInsight/template/postfix/templates/stream/assignment_after.java

@@ -0,0 +1,9 @@
+package templates;
+
+public class Foo {
+  public static void main(String[] args) {
+    Object[] a;
+    Object o;
+    a = o.str   <caret>
+  }
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/template/postfix/templates/StreamPostfixTemplateTest.java

@@ -44,6 +44,10 @@ public class StreamPostfixTemplateTest extends PostfixTemplateTestCase {
     doTest();
   }
 
+  public void testAssignment() {
+    doTest();
+  }
+
   public void testNotAvailable() {
     doTest();
   }