SERVER-14973 consolidate shard key parsing, cleanup shard key patterns

1 files changed, 142 insertions, 0 deletions

diff --git a/src/mongo/db/keypattern_test.cpp b/src/mongo/db/keypattern_test.cpp
new file mode 100644
index 00000000000..63b9b325d75
--- /dev/null
+++ b/src/mongo/db/keypattern_test.cpp
@@ -0,0 +1,142 @@
+/*    Copyright 2014 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/keypattern.h"
+
+#include "mongo/unittest/unittest.h"
+
+namespace {
+
+    using namespace mongo;
+
+    TEST(KeyPattern, ExtendRangeBound) {
+
+        BSONObj bound = BSON("a" << 55);
+        BSONObj longBound = BSON("a" << 55 << "b" << 66);
+
+        //test keyPattern shorter than bound, should fail
+        {
+            KeyPattern keyPat(BSON("a" << 1));
+            ASSERT_THROWS(keyPat.extendRangeBound(longBound, false), MsgAssertionException);
+        }
+
+        //test keyPattern doesn't match bound, should fail
+        {
+            KeyPattern keyPat(BSON("b" << 1));
+            ASSERT_THROWS(keyPat.extendRangeBound(bound, false), MsgAssertionException);
+        }
+        {
+            KeyPattern keyPat(BSON("a" << 1 << "c" << 1));
+            ASSERT_THROWS(keyPat.extendRangeBound(longBound, false), MsgAssertionException);
+        }
+
+        //test keyPattern same as bound
+        {
+            KeyPattern keyPat(BSON("a" << 1));
+            BSONObj newB = keyPat.extendRangeBound(bound, false);
+            ASSERT_EQUALS(newB, BSON("a" << 55));
+        }
+        {
+            KeyPattern keyPat(BSON("a" << 1));
+            BSONObj newB = keyPat.extendRangeBound(bound, false);
+            ASSERT_EQUALS(newB, BSON("a" << 55));
+        }
+
+        //test keyPattern longer than bound, simple
+        {
+            KeyPattern keyPat(BSON("a" << 1 << "b" << 1));
+            BSONObj newB = keyPat.extendRangeBound(bound, false);
+            ASSERT_EQUALS(newB, BSON("a" << 55 << "b" << MINKEY));
+        }
+        {
+            KeyPattern keyPat(BSON("a" << 1 << "b" << 1));
+            BSONObj newB = keyPat.extendRangeBound(bound, true);
+            ASSERT_EQUALS(newB, BSON("a" << 55 << "b" << MAXKEY));
+        }
+
+        //test keyPattern longer than bound, more complex pattern directions
+        {
+            KeyPattern keyPat(BSON("a" << 1 << "b" << -1));
+            BSONObj newB = keyPat.extendRangeBound(bound, false);
+            ASSERT_EQUALS(newB, BSON("a" << 55 << "b" << MAXKEY));
+        }
+        {
+            KeyPattern keyPat(BSON("a" << 1 << "b" << -1));
+            BSONObj newB = keyPat.extendRangeBound(bound, true);
+            ASSERT_EQUALS(newB, BSON("a" << 55 << "b" << MINKEY));
+        }
+        {
+
+            KeyPattern keyPat(BSON("a" << 1 << "b" << -1 << "c" << 1));
+            BSONObj newB = keyPat.extendRangeBound(bound, false);
+            ASSERT_EQUALS(newB, BSON("a" << 55 << "b" << MAXKEY << "c" << MINKEY));
+        }
+        {
+            KeyPattern keyPat(BSON("a" << 1 << "b" << -1 << "c" << 1));
+            BSONObj newB = keyPat.extendRangeBound(bound, true);
+            ASSERT_EQUALS(newB, BSON("a" << 55 << "b" << MINKEY << "c" << MAXKEY));
+        }
+    }
+
+    TEST(KeyPattern, GlobalMinMax) {
+
+        //
+        // Simple KeyPatterns
+        //
+
+        ASSERT_EQUALS(KeyPattern(BSON("a" << 1)).globalMin(), BSON("a" << MINKEY));
+        ASSERT_EQUALS(KeyPattern(BSON("a" << 1)).globalMax(), BSON("a" << MAXKEY));
+
+        ASSERT_EQUALS(KeyPattern(BSON("a" << -1)).globalMin(), BSON("a" << MAXKEY));
+        ASSERT_EQUALS(KeyPattern(BSON("a" << -1)).globalMax(), BSON("a" << MINKEY));
+
+        ASSERT_EQUALS(KeyPattern(BSON("a" << 1 << "b" << 1.0)).globalMin(),
+                      BSON("a" << MINKEY << "b" << MINKEY));
+        ASSERT_EQUALS(KeyPattern(BSON("a" << 1 << "b" << 1.0)).globalMax(),
+                      BSON("a" << MAXKEY << "b" << MAXKEY));
+
+        ASSERT_EQUALS(KeyPattern(BSON("a" << 1 << "b" << -1.0f)).globalMin(),
+                      BSON("a" << MINKEY << "b" << MAXKEY));
+        ASSERT_EQUALS(KeyPattern(BSON("a" << 1 << "b" << -1.0f)).globalMax(),
+                      BSON("a" << MAXKEY << "b" << MINKEY));
+
+        ASSERT_EQUALS(KeyPattern(BSON("a" << "hashed")).globalMin(), BSON("a" << MINKEY));
+        ASSERT_EQUALS(KeyPattern(BSON("a" << "hashed")).globalMax(), BSON("a" << MAXKEY));
+
+        //
+        // Nested KeyPatterns
+        //
+
+        ASSERT_EQUALS(KeyPattern(BSON("a.b" << 1)).globalMin(), BSON("a.b" << MINKEY));
+        ASSERT_EQUALS(KeyPattern(BSON("a.b" << 1)).globalMax(), BSON("a.b" << MAXKEY));
+
+        ASSERT_EQUALS(KeyPattern(BSON("a.b.c" << -1)).globalMin(), BSON("a.b.c" << MAXKEY));
+        ASSERT_EQUALS(KeyPattern(BSON("a.b.c" << -1)).globalMax(), BSON("a.b.c" << MINKEY));
+    }
+
+}
+