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-rw-r--r--jstests/core/arrayfind9.js34
1 files changed, 34 insertions, 0 deletions
diff --git a/jstests/core/arrayfind9.js b/jstests/core/arrayfind9.js
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+++ b/jstests/core/arrayfind9.js
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+// Assorted $elemMatch behavior checks.
+
+t = db.jstests_arrayfind9;
+t.drop();
+
+// Top level field $elemMatch:$not matching
+t.save( { a:[ 1 ] } );
+assert.eq( 1, t.count( { a:{ $elemMatch:{ $not:{ $ne:1 } } } } ) );
+
+// Top level field object $elemMatch matching.
+t.drop();
+t.save( { a:[ {} ] } );
+assert.eq( 1, t.count( { a:{ $elemMatch:{ $gte:{} } } } ) );
+
+// Top level field array $elemMatch matching.
+t.drop();
+t.save( { a:[ [] ] } );
+assert.eq( 1, t.count( { a:{ $elemMatch:{ $in:[ [] ] } } } ) );
+
+// Matching by array index.
+t.drop();
+t.save( { a:[ [ 'x' ] ] } );
+assert.eq( 1, t.count( { a:{ $elemMatch:{ '0':'x' } } } ) );
+
+// Matching multiple values of a nested array.
+t.drop();
+t.save( { a:[ { b:[ 0, 2 ] } ] } );
+t.ensureIndex( { a:1 } );
+t.ensureIndex( { 'a.b':1 } );
+plans = [ { $natural:1 }, { a:1 }, { 'a.b':1 } ];
+for( i in plans ) {
+ p = plans[ i ];
+ assert.eq( 1, t.find( { a:{ $elemMatch:{ b:{ $gte:1, $lte:1 } } } } ).hint( p ).itcount() );
+}