1 files changed, 58 insertions, 0 deletions
diff --git a/jstests/indexp.js b/jstests/indexp.js
new file mode 100644
index 0000000..ee511eb
--- /dev/null
+++ b/jstests/indexp.js
@@ -0,0 +1,58 @@
+// Check recording and playback of good query plans with different index types SERVER-958.
+
+t = db.jstests_indexp;
+t.drop();
+
+function expectRecordedPlan( query, idx ) {
+ 	assert.eq( "BtreeCursor " + idx, t.find( query ).explain( true ).oldPlan.cursor );
+}
+
+function expectNoRecordedPlan( query ) {
+ 	assert.isnull( t.find( query ).explain( true ).oldPlan );
+}
+
+// Basic test
+t.drop();
+t.ensureIndex( {a:1} );
+t.save( {a:1} );
+t.find( {a:1} ).itcount();
+expectRecordedPlan( {a:1}, "a_1" );
+
+// Index type changes
+t.drop();
+t.ensureIndex( {a:1} );
+t.save( {a:1} );
+t.find( {a:1} ).itcount();
+t.save( {a:[1,2]} );
+expectRecordedPlan( {a:1}, "a_1" );
+
+// Multi key QueryPattern reuses index
+t.drop();
+t.ensureIndex( {a:1} );
+t.save( {a:[1,2]} );
+t.find( {a:{$gt:0}} ).itcount();
+expectRecordedPlan( {a:{$gt:0,$lt:5}}, "a_1" );
+
+// Single key QueryPattern can still be used to find best plan - at least for now.
+t.drop();
+t.ensureIndex( {a:1} );
+t.save( {a:1} );
+t.find( {a:{$gt:0,$lt:5}} ).itcount();
+t.save( {a:[1,2]} );
+expectRecordedPlan( {a:{$gt:0,$lt:5}}, "a_1" );
+
+// Invalid query with only valid fields used 
+if ( 0 ) { // SERVER-2864
+t.drop();
+t.ensureIndex( {a:1} );
+t.save( {a:1}  );
+t.find( {a:1,b:{$gt:5,$lt:0}} ).itcount();
+expectRecordedPlan( {a:{$gt:0,$lt:5}}, "a_1" );
+}
+
+// Dummy query plan not stored
+t.drop();
+t.ensureIndex( {a:1} );
+t.save( {a:1} );
+t.find( {a:{$gt:5,$lt:0}} ).itcount();
+expectNoRecordedPlan( {a:{$gt:5,$lt:0}} );
+\ No newline at end of file