Took into account Parenthesized Expressions

fixed PY-7151 Convert triple-quoted string to single-quoted string: do not wrap string with parenthesis if initial string is already inside them

python/src/com/jetbrains/python/codeInsight/intentions/PyConvertTripleQuotedStringIntention.java

@@ -94,7 +94,8 @@ public class PyConvertTripleQuotedStringIntention extends BaseIntentionAction {
       PyExpressionStatement e = elementGenerator.createFromText(LanguageLevel.forElement(string), PyExpressionStatement.class, result.toString());
 
       PyExpression expression = e.getExpression();
-      if (parent instanceof PyTupleExpression && expression instanceof PyParenthesizedExpression)
+      if ((parent instanceof PyParenthesizedExpression || parent instanceof PyTupleExpression)
+          && expression instanceof PyParenthesizedExpression)
         expression = ((PyParenthesizedExpression)expression).getContainedExpression();
       if (expression != null)
         string.replace(expression);

python/testData/intentions/afterConvertTripleQuotedStringInParenthesized.py

@@ -0,0 +1,2 @@
+t = ("string\n"
+     "some\n")

python/testData/intentions/beforeConvertTripleQuotedStringInParenthesized.py

@@ -0,0 +1,3 @@
+t = ("""str<caret>ing
+some
+""")

python/testSrc/com/jetbrains/python/PyIntentionTest.java

@@ -253,6 +253,10 @@ public class PyIntentionTest extends PyTestCase {
     doTest(PyBundle.message("INTN.triple.quoted.string"));
   }
 
+  public void testConvertTripleQuotedStringInParenthesized() { //PY-7883
+    doTest(PyBundle.message("INTN.triple.quoted.string"));
+  }
+
   public void testConvertTripleQuotedUnicodeString() { //PY-7152
     doTest(PyBundle.message("INTN.triple.quoted.string"));
   }