1 files changed, 128 insertions, 0 deletions
diff --git a/src/mongo/db/s/active_move_primaries_registry_test.cpp b/src/mongo/db/s/active_move_primaries_registry_test.cpp
new file mode 100644
index 00000000000..b196fdc2621
--- /dev/null
+++ b/src/mongo/db/s/active_move_primaries_registry_test.cpp
@@ -0,0 +1,128 @@
+/**
+ *    Copyright (C) 2018 MongoDB Inc.
+ *
+ *    This program is free software: you can redistribute it and/or  modify
+ *    it under the terms of the GNU Affero General Public License, version 3,
+ *    as published by the Free Software Foundation.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the GNU Affero General Public License in all respects
+ *    for all of the code used other than as permitted herein. If you modify
+ *    file(s) with this exception, you may extend this exception to your
+ *    version of the file(s), but you are not obligated to do so. If you do not
+ *    wish to do so, delete this exception statement from your version. If you
+ *    delete this exception statement from all source files in the program,
+ *    then also delete it in the license file.
+ */
+
+#include "mongo/db/s/active_move_primaries_registry.h"
+#include "mongo/bson/bsonmisc.h"
+#include "mongo/db/client.h"
+#include "mongo/db/service_context_noop.h"
+#include "mongo/s/request_types/move_primary_gen.h"
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+namespace {
+
+using unittest::assertGet;
+
+class MovePrimaryRegistration : public unittest::Test {
+protected:
+    void setUp() override {
+        _client = _serviceContext.makeClient("MovePrimaryRegistrationTest");
+        _opCtx = _serviceContext.makeOperationContext(_client.get());
+    }
+
+    void tearDown() override {
+        _opCtx.reset();
+        _client.reset();
+    }
+
+    OperationContext* getTxn() const {
+        return _opCtx.get();
+    }
+
+    ServiceContextNoop _serviceContext;
+    ServiceContext::UniqueClient _client;
+    ServiceContext::UniqueOperationContext _opCtx;
+
+    ActiveMovePrimariesRegistry _registry;
+};
+
+ShardMovePrimary createMovePrimaryRequest(const NamespaceString& nss) {
+    ShardMovePrimary request;
+    request.set_movePrimary(std::move(nss));
+    request.setTo("shard0001");
+
+    return request;
+}
+
+TEST_F(MovePrimaryRegistration, ScopedPrimaryMoveConstructorAndAssignment) {
+    auto originalScopedMovePrimary = assertGet(
+        _registry.registerMovePrimary(createMovePrimaryRequest(NamespaceString("TestDB"))));
+    ASSERT(originalScopedMovePrimary.mustExecute());
+
+    ScopedMovePrimary movedScopedMovePrimary(std::move(originalScopedMovePrimary));
+    ASSERT(movedScopedMovePrimary.mustExecute());
+
+    originalScopedMovePrimary = std::move(movedScopedMovePrimary);
+    ASSERT(originalScopedMovePrimary.mustExecute());
+
+    // Need to signal the registered migration so the destructor doesn't invariant
+    originalScopedMovePrimary.signalComplete(Status::OK());
+}
+
+TEST_F(MovePrimaryRegistration, GetActiveMovePrimaryNamespace) {
+    ASSERT(!_registry.getActiveMovePrimaryNss());
+
+    const NamespaceString nss("TestDB");
+
+    auto originalScopedMovePrimary =
+        assertGet(_registry.registerMovePrimary(createMovePrimaryRequest(nss)));
+
+    ASSERT_EQ(nss.ns(), _registry.getActiveMovePrimaryNss()->ns());
+
+    // Need to signal the registered migration so the destructor doesn't invariant
+    originalScopedMovePrimary.signalComplete(Status::OK());
+}
+
+TEST_F(MovePrimaryRegistration, SecondMovePrimaryReturnsConflictingOperationInProgress) {
+    auto originalScopedMovePrimary = assertGet(
+        _registry.registerMovePrimary(createMovePrimaryRequest(NamespaceString("TestDB"))));
+
+    auto secondScopedMovePrimaryStatus =
+        _registry.registerMovePrimary(createMovePrimaryRequest(NamespaceString("TestDB2")));
+    ASSERT_EQ(ErrorCodes::ConflictingOperationInProgress,
+              secondScopedMovePrimaryStatus.getStatus());
+
+    originalScopedMovePrimary.signalComplete(Status::OK());
+}
+
+TEST_F(MovePrimaryRegistration, SecondMovePrimaryWithSameArgumentsJoinsFirst) {
+    auto originalScopedMovePrimary = assertGet(
+        _registry.registerMovePrimary(createMovePrimaryRequest(NamespaceString("TestDB"))));
+    ASSERT(originalScopedMovePrimary.mustExecute());
+
+    auto secondScopedMovePrimary = assertGet(
+        _registry.registerMovePrimary(createMovePrimaryRequest(NamespaceString("TestDB"))));
+    ASSERT(!secondScopedMovePrimary.mustExecute());
+
+    originalScopedMovePrimary.signalComplete({ErrorCodes::InternalError, "Test error"});
+    ASSERT_EQ(Status(ErrorCodes::InternalError, "Test error"),
+              secondScopedMovePrimary.waitForCompletion(getTxn()));
+}
+
+}  // namespace
+}  // namespace mongo