1 files changed, 88 insertions, 0 deletions
diff --git a/jstests/repl/dbcase.js b/jstests/repl/dbcase.js
new file mode 100644
index 00000000000..f3bc9d38072
--- /dev/null
+++ b/jstests/repl/dbcase.js
@@ -0,0 +1,88 @@
+// Test db case checking with replication SERVER-2111
+
+baseName = "jstests_repl_dbcase";
+
+rt = new ReplTest( baseName );
+
+m = rt.start( true );
+s = rt.start( false );
+
+n1 = "dbname";
+n2 = "dbNAme";
+
+/**
+ * The value of n should be n1 or n2.  Check that n is soon present while its
+ * opposite is not present.
+ */
+function check( n ) {
+    assert.soon( function() {
+                names = s.getDBNames();
+                n1Idx = names.indexOf( n1 );
+                n2Idx = names.indexOf( n2 );
+                // Check n1 and n2 are not both present.
+                assert( n1Idx == -1 || n2Idx == -1 );
+                // Return true if we matched expected n.
+                return -1 != names.indexOf( n );
+                } );
+}
+
+/** Allow some time for additional operations to be processed by the slave. */
+function checkTwice( n ) {
+ 	check( n );
+    // zzz is expected to be cloned after n1 and n2 because of its position in the alphabet.
+    m.getDB( "zzz" ).c.save( {} );
+    assert.soon( function() { return s.getDB( "zzz" ).c.count(); } )
+    check( n );
+    m.getDB( "zzz" ).dropDatabase();
+}
+
+/**
+ * The slave may create in memory db names on the master matching old dbs it is
+ * attempting to clone.  This function forces operation 'cmd' by deleting those
+ * in memory dbs if necessary.  This function should only be called in cases where
+ * 'cmd' would succeed if not for the in memory dbs on master created by the slave.
+ */
+function force( cmd ) {
+    print( "cmd: " + cmd );
+    eval( cmd );
+    while( m1.getLastError() ) {
+        sleep( 100 );
+    	m1.dropDatabase();
+        m2.dropDatabase();
+        eval( cmd );
+    }
+}
+
+m1 = m.getDB( n1 );
+m2 = m.getDB( n2 );
+
+m1.c.save( {} );
+m2.c.save( {} ); // will fail due to conflict
+check( n1 );
+
+m1.dropDatabase();
+force( "m2.c.save( {} );" ); // will now succeed
+check( n2 );
+
+m2.dropDatabase();
+force( "m1.c.save( {} );" );
+check( n1 );
+
+for( i = 0; i < 5; ++i ) {
+ 	m1.dropDatabase();
+    force( "m2.c.save( {} );" );
+    m2.dropDatabase();
+    force( "m1.c.save( {} );" );
+}
+checkTwice( n1 );
+
+m1.dropDatabase();
+force( "m2.c.save( {} );" );
+
+for( i = 0; i < 5; ++i ) {
+    m2.dropDatabase();
+    force( "m1.c.save( {} );" );
+ 	m1.dropDatabase();
+    force( "m2.c.save( {} );" );
+}
+checkTwice( n2 );