Allows a mock object to delete itself in an action. By Simon Bowden.

include/gmock/gmock-spec-builders.h

@@ -1426,6 +1426,7 @@ class InvokeWithHelper {
     bool is_excessive = false;
     ::std::stringstream ss;
     ::std::stringstream why;
+    ::std::stringstream loc;
     Action<F> action;
     Expectation<F>* exp;
 
@@ -1435,6 +1436,11 @@ class InvokeWithHelper {
         args, &exp, &action, &is_excessive, &ss, &why);
     ss << "    Function call: " << mocker->Name();
     UniversalPrinter<ArgumentTuple>::Print(args, &ss);
+    // In case the action deletes a piece of the expectation, we
+    // generate the message beforehand.
+    if (found && !is_excessive) {
+      exp->DescribeLocationTo(&loc);
+    }
     Result result = action.IsDoDefault() ?
         mocker->PerformDefaultAction(args, ss.str())
         : action.Perform(args);
@@ -1449,8 +1455,6 @@ class InvokeWithHelper {
       } else {
         // We had an expected call and the matching expectation is
         // described in ss.
-        ::std::stringstream loc;
-        exp->DescribeLocationTo(&loc);
         Log(INFO, loc.str() + ss.str(), 3);
       }
     } else {
@@ -1494,6 +1498,7 @@ class InvokeWithHelper<void, F> {
     bool is_excessive = false;
     ::std::stringstream ss;
     ::std::stringstream why;
+    ::std::stringstream loc;
     Action<F> action;
     Expectation<F>* exp;
 
@@ -1504,6 +1509,11 @@ class InvokeWithHelper<void, F> {
     ss << "    Function call: " << mocker->Name();
     UniversalPrinter<ArgumentTuple>::Print(args, &ss);
     ss << "\n" << why.str();
+    // In case the action deletes a piece of the expectation, we
+    // generate the message beforehand.
+    if (found && !is_excessive) {
+      exp->DescribeLocationTo(&loc);
+    }
     if (action.IsDoDefault()) {
       mocker->PerformDefaultAction(args, ss.str());
     } else {
@@ -1518,8 +1528,6 @@ class InvokeWithHelper<void, F> {
       } else {
         // We had an expected call and the matching expectation is
         // described in ss.
-        ::std::stringstream loc;
-        exp->DescribeLocationTo(&loc);
         Log(INFO, loc.str() + ss.str(), 3);
       }
     } else {

test/gmock-spec-builders_test.cc

@@ -1304,7 +1304,24 @@ TEST(DeletingMockEarlyTest, Success2) {
   delete b2;
 }
 
-// Tests that calls that violates the original spec yield failures.
+// Tests that it's OK to delete a mock object itself in its action.
+
+ACTION_P(Delete, ptr) { delete ptr; }
+
+TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningVoid) {
+  MockA* const a = new MockA;
+  EXPECT_CALL(*a, DoA(_)).WillOnce(Delete(a));
+  a->DoA(42);  // This will cause a to be deleted.
+}
+
+TEST(DeletingMockEarlyTest, CanDeleteSelfInActionReturningValue) {
+  MockA* const a = new MockA;
+  EXPECT_CALL(*a, ReturnResult(_))
+      .WillOnce(DoAll(Delete(a), Return(Result())));
+  a->ReturnResult(42);  // This will cause a to be deleted.
+}
+
+// Tests that calls that violate the original spec yield failures.
 TEST(DeletingMockEarlyTest, Failure1) {
   MockB* const b1 = new MockB;
   MockA* const a = new MockA;
@@ -1330,7 +1347,7 @@ TEST(DeletingMockEarlyTest, Failure1) {
   delete b2;
 }
 
-// Tests that calls that violates the original spec yield failures.
+// Tests that calls that violate the original spec yield failures.
 TEST(DeletingMockEarlyTest, Failure2) {
   MockB* const b1 = new MockB;
   MockA* const a = new MockA;