SERVER-18791 Pull count command parsing into a separate library

1 files changed, 133 insertions, 0 deletions

diff --git a/src/mongo/db/query/count_request_test.cpp b/src/mongo/db/query/count_request_test.cpp
new file mode 100644
index 00000000000..4f0546b4180
--- /dev/null
+++ b/src/mongo/db/query/count_request_test.cpp
@@ -0,0 +1,133 @@
+/**
+ *    Copyright (C) 2015 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/platform/basic.h"
+
+#include "mongo/bson/json.h"
+#include "mongo/db/query/count_request.h"
+#include "mongo/util/mongoutils/str.h"
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+namespace {
+
+    TEST(CountRequest, ParseDefaults) {
+        const auto countRequestStatus =
+            CountRequest::parseFromBSON("TestDB",
+                                        BSON("count" << "TestColl" <<
+                                             "query" << BSON("a" << BSON("$lte" << 10))));
+
+        ASSERT_OK(countRequestStatus.getStatus());
+
+        const CountRequest& countRequest = countRequestStatus.getValue();
+
+        ASSERT_EQUALS(countRequest.getNs(), "TestDB.TestColl");
+        ASSERT_EQUALS(countRequest.getQuery(), fromjson("{ a : { '$lte' : 10 } }"));
+
+        // Defaults
+        ASSERT_EQUALS(countRequest.getLimit(), 0);
+        ASSERT_EQUALS(countRequest.getSkip(), 0);
+        ASSERT(countRequest.getHint().isEmpty());
+    }
+
+    TEST(CountRequest, ParseComplete) {
+        const auto countRequestStatus =
+            CountRequest::parseFromBSON("TestDB",
+                                        BSON("count" << "TestColl" <<
+                                             "query" << BSON("a" << BSON("$gte" << 11)) <<
+                                             "limit" << 100 <<
+                                             "skip" << 1000 <<
+                                             "hint" << BSON("b" << 5)));
+
+        ASSERT_OK(countRequestStatus.getStatus());
+
+        const CountRequest& countRequest = countRequestStatus.getValue();
+
+        ASSERT_EQUALS(countRequest.getNs(), "TestDB.TestColl");
+        ASSERT_EQUALS(countRequest.getQuery(), fromjson("{ a : { '$gte' : 11 } }"));
+        ASSERT_EQUALS(countRequest.getLimit(), 100);
+        ASSERT_EQUALS(countRequest.getSkip(), 1000);
+        ASSERT_EQUALS(countRequest.getHint(), fromjson("{ b : 5 }"));
+    }
+
+    TEST(CountRequest, ParseNegativeLimit) {
+        const auto countRequestStatus =
+            CountRequest::parseFromBSON("TestDB",
+                                        BSON("count" << "TestColl" <<
+                                             "query" << BSON("a" << BSON("$gte" << 11)) <<
+                                             "limit" << -100 <<
+                                             "skip" << 1000 <<
+                                             "hint" << BSON("b" << 5)));
+
+        ASSERT_OK(countRequestStatus.getStatus());
+
+        const CountRequest& countRequest = countRequestStatus.getValue();
+
+        ASSERT_EQUALS(countRequest.getNs(), "TestDB.TestColl");
+        ASSERT_EQUALS(countRequest.getQuery(), fromjson("{ a : { '$gte' : 11 } }"));
+        ASSERT_EQUALS(countRequest.getLimit(), 100);
+        ASSERT_EQUALS(countRequest.getSkip(), 1000);
+        ASSERT_EQUALS(countRequest.getHint(), fromjson("{ b : 5 }"));
+    }
+
+    TEST(CountRequest, FailParseMissingNS) {
+        const auto countRequestStatus =
+            CountRequest::parseFromBSON("TestDB",
+                                        BSON("query" << BSON("a" << BSON("$gte" << 11))));
+
+        ASSERT_EQUALS(countRequestStatus.getStatus(), ErrorCodes::BadValue);
+    }
+
+    TEST(CountRequest, FailParseBadSkipValue) {
+        const auto countRequestStatus =
+            CountRequest::parseFromBSON("TestDB",
+                                        BSON("count" << "TestColl" <<
+                                             "query" << BSON("a" << BSON("$gte" << 11)) <<
+                                             "skip" << -1000));
+
+        ASSERT_EQUALS(countRequestStatus.getStatus(), ErrorCodes::BadValue);
+    }
+
+    TEST(CountRequest, ToBSON) {
+        CountRequest countRequest("TestDB.TestColl", BSON("a" << BSON("$gte" << 11)));
+        countRequest.setLimit(100);
+        countRequest.setSkip(1000);
+        countRequest.setHint(BSON("b" << 5));
+
+        BSONObj actualObj = countRequest.toBSON();
+        BSONObj expectedObj(fromjson("{ count : 'TestDB.TestColl',"
+                                     "  query : { a : { '$gte' : 11 } },"
+                                     "  limit : 100,"
+                                     "  skip : 1000,"
+                                     "  hint : { b : 5 } }"));
+
+        ASSERT_EQUALS(actualObj, expectedObj);
+    }
+
+} // namespace
+} // namespace mongo