PY-15867 Omit single star parameter in updated constructor signature if it's not followed by keyword-only parameters

python/src/com/jetbrains/python/inspections/quickfix/AddCallSuperQuickFix.java

@@ -208,15 +208,21 @@ public class AddCallSuperQuickFix implements LocalQuickFix {
     }
 
     // Required keyword-only parameters
+    boolean hasKeywordOnlyParams = false;
     for (PyParameter param : origInfo.getRequiredKeywordOnlyParameters()) {
       newFunctionParams.add(param.getText());
+      hasKeywordOnlyParams = true;
     }
     for (PyParameter param : superInfo.getRequiredKeywordOnlyParameters()) {
       if (!origInfo.getAllParameterNames().contains(param.getName())) {
         newFunctionParams.add(param.getText());
+        hasKeywordOnlyParams = true;
       }
       superCallArgs.add(param.getName() + "=" + param.getName());
     }
+    if (starredParam instanceof PySingleStarParameter && !hasKeywordOnlyParams) {
+      newFunctionParams.remove(newFunctionParams.size() - 1);
+    }
 
     // Optional keyword-only parameters
     for (PyParameter param : origInfo.getOptionalKeywordOnlyParameters()) {

python/testData/inspections/AddCallSuperNoRequiredKeywordOnlyParamAfterSingleStarInSuperInit.py

@@ -0,0 +1,8 @@
+class A:
+    def __init__(self, a, b=1, *, kw_only=2):
+        pass
+
+
+class B(A):
+    def <warning descr="Call to __init__ of super class is missed">__i<caret>nit__</warning>(self):
+        pass

python/testData/inspections/AddCallSuperNoRequiredKeywordOnlyParamAfterSingleStarInSuperInit_after.py

@@ -0,0 +1,8 @@
+class A:
+    def __init__(self, a, b=1, *, kw_only=2):
+        pass
+
+
+class B(A):
+    def __init__(self, a):
+        super().__init__(a)

python/testData/inspections/AddCallSuperRequiredKeywordOnlyParamAfterSingleStarInSuperInitIsMerged.py

@@ -0,0 +1,8 @@
+class A:
+    def __init__(self, *, a):
+        pass
+
+
+class B(A):
+    def <warning descr="Call to __init__ of super class is missed">__i<caret>nit__</warning>(self, a):
+        pass

python/testData/inspections/AddCallSuperRequiredKeywordOnlyParamAfterSingleStarInSuperInitIsMerged_after.py

@@ -0,0 +1,8 @@
+class A:
+    def __init__(self, *, a):
+        pass
+
+
+class B(A):
+    def __init__(self, a):
+        super().__init__(a=a)

python/testSrc/com/jetbrains/python/Py3QuickFixTest.java

@@ -115,6 +115,27 @@ public class Py3QuickFixTest extends PyTestCase {
     doInspectionTest(PyMissingConstructorInspection.class, PyBundle.message("QFIX.add.super"), true, true);
   }
 
+  // PY-15867
+  public void testAddCallSuperNoRequiredKeywordOnlyParamAfterSingleStarInSuperInit() {
+    runWithLanguageLevel(LanguageLevel.PYTHON30, new Runnable() {
+      @Override
+      public void run() {
+        doInspectionTest(PyMissingConstructorInspection.class, PyBundle.message("QFIX.add.super"), true, true);
+      }
+    });
+  }
+
+    // PY-15867
+  public void testAddCallSuperRequiredKeywordOnlyParamAfterSingleStarInSuperInitIsMerged() {
+    runWithLanguageLevel(LanguageLevel.PYTHON30, new Runnable() {
+      @Override
+      public void run() {
+        doInspectionTest(PyMissingConstructorInspection.class, PyBundle.message("QFIX.add.super"), true, true);
+      }
+    });
+  }
+
+
   // PY-8991
   public void testRemoveUnicodePrefixFromGluedStringNodesWithSlash() {
     runWithLanguageLevel(LanguageLevel.PYTHON32, new Runnable() {