1 files changed, 42 insertions, 0 deletions
diff --git a/jstests/core/in4.js b/jstests/core/in4.js
new file mode 100644
index 00000000000..3e3dca29528
--- /dev/null
+++ b/jstests/core/in4.js
@@ -0,0 +1,42 @@
+t = db.jstests_in4;
+
+function checkRanges( a, b ) {
+    assert.eq( a, b );
+}
+
+t.drop();
+t.ensureIndex( {a:1,b:1} );
+checkRanges( {a:[[2,2]],b:[[3,3]]}, t.find( {a:2,b:3} ).explain().indexBounds );
+checkRanges( {a:[[2,2],[3,3]],b:[[4,4]]}, t.find( {a:{$in:[2,3]},b:4} ).explain().indexBounds );
+checkRanges( {a:[[2,2]],b:[[3,3],[4,4]]}, t.find( {a:2,b:{$in:[3,4]}} ).explain().indexBounds );
+checkRanges( {a:[[2,2],[3,3]],b:[[4,4],[5,5]]}, t.find( {a:{$in:[2,3]},b:{$in:[4,5]}} ).explain().indexBounds );
+
+checkRanges( {a:[[2,2],[3,3]],b:[[4,10]]}, t.find( {a:{$in:[2,3]},b:{$gt:4,$lt:10}} ).explain().indexBounds );
+
+t.save( {a:1,b:1} );
+t.save( {a:2,b:4.5} );
+t.save( {a:2,b:4} );
+assert.eq( 2, t.find( {a:{$in:[2,3]},b:{$in:[4,5]}} ).hint( {a:1,b:1} ).explain().nscanned );
+assert.eq( 2, t.findOne( {a:{$in:[2,3]},b:{$in:[4,5]}} ).a );
+assert.eq( 4, t.findOne( {a:{$in:[2,3]},b:{$in:[4,5]}} ).b );
+
+t.drop();
+t.ensureIndex( {a:1,b:1,c:1} );
+checkRanges( {a:[[2,2]],b:[[3,3],[4,4]],c:[[5,5]]}, t.find( {a:2,b:{$in:[3,4]},c:5} ).explain().indexBounds );
+
+t.save( {a:2,b:3,c:5} );
+t.save( {a:2,b:3,c:4} );
+assert.eq( 1, t.find( {a:2,b:{$in:[3,4]},c:5} ).hint( {a:1,b:1,c:1} ).explain().nscanned );
+t.remove({});
+t.save( {a:2,b:4,c:5} );
+t.save( {a:2,b:4,c:4} );
+assert.eq( 2, t.find( {a:2,b:{$in:[3,4]},c:5} ).hint( {a:1,b:1,c:1} ).explain().nscanned );
+
+t.drop();
+t.ensureIndex( {a:1,b:-1} );
+ib = t.find( {a:2,b:{$in:[3,4]}} ).explain().indexBounds;
+checkRanges( {a:[[2,2]],b:[[4,4],[3,3]]}, ib );
+assert( ib.b[ 0 ][ 0 ] > ib.b[ 1 ][ 0 ] );
+ib = t.find( {a:2,b:{$in:[3,4]}} ).sort( {a:-1,b:1} ).explain().indexBounds;
+checkRanges( {a:[[2,2]],b:[[3,3],[4,4]]}, ib );
+assert( ib.b[ 0 ][ 0 ] < ib.b[ 1 ][ 0 ] );