PY-15171 Detect hanging indent in the value of key-value pair in dict literals

python/src/com/jetbrains/python/formatter/PyBlock.java

@@ -407,6 +407,10 @@ public class PyBlock implements ASTBlock {
           final PyExpression valueExpression = ((PyKeywordArgument)firstItem).getValueExpression();
           return valueExpression != null && hasHangingIndent(valueExpression);
         }
+        else if (firstItem instanceof PyKeyValueExpression) {
+          final PyExpression value = ((PyKeyValueExpression)firstItem).getValue();
+          return value != null && hasHangingIndent(value);
+        }
         return hasHangingIndent(firstItem);
       }
     }

python/testData/formatter/hangingIndentInKeyValuePair.py

@@ -0,0 +1,5 @@
+example = {'breakfast': {
+                        'eggs': 1,
+                        'spam': 2
+                        }
+           }

python/testData/formatter/hangingIndentInKeyValuePair_after.py

@@ -0,0 +1,5 @@
+example = {'breakfast': {
+    'eggs': 1,
+    'spam': 2
+}
+}

python/testSrc/com/jetbrains/python/PyFormatterTest.java

@@ -559,6 +559,11 @@ public class PyFormatterTest extends PyTestCase {
     doTest();
   }
 
+  // PY-15171
+  public void testHangingIndentInKeyValuePair() {
+    doTest();
+  }
+
   public void testAlignmentOfEmptyCollectionLiterals() {
     doTest();
   }