SERVER-6878 Clean distinct3.js and make evalb.js more robust.

Conflicts:

	jstests/evalb.js

2 files changed, 41 insertions, 11 deletions

diff --git a/jstests/distinct3.js b/jstests/distinct3.js
index f945ec9d7e8..22117824dd7 100644
--- a/jstests/distinct3.js
+++ b/jstests/distinct3.js
@@ -16,8 +16,15 @@ for( i = 0; i < 1000; ++i ) {
 }
 db.getLastError();
 
-// The idea here is to try and remove the last match for the {a:1} index scan while distinct is yielding.
-p = startParallelShell( 'for( i = 0; i < 2500; ++i ) { db.jstests_distinct3.remove({a:49}); for( j = 0; j < 20; ++j ) { db.jstests_distinct3.save({a:49,c:49,d:j}) } }' );
+// Attempt to remove the last match for the {a:1} index scan while distinct is yielding.
+p = startParallelShell( 'for( i = 0; i < 2500; ++i ) {                             ' +
+                        '    db.jstests_distinct3.remove( { a:49 } );              ' +
+                        '    for( j = 0; j < 20; ++j ) {                           ' +
+                        '        db.jstests_distinct3.save( { a:49, c:49, d:j } ); ' +
+                        '    }                                                     ' +
+                        '}                                                         ' +
+                        '// Wait for the above writes to complete.                 ' +
+                        'db.getLastError();                                        ' );
 
 for( i = 0; i < 100; ++i ) {
     count = t.distinct( 'c', {$or:[{a:{$gte:0},d:0},{b:{$gte:0}}]} ).length;
diff --git a/jstests/evalb.js b/jstests/evalb.js
index ea803317083..aa56e972384 100644
--- a/jstests/evalb.js
+++ b/jstests/evalb.js
@@ -1,17 +1,40 @@
+// Check the return value of a db.eval function running a database query, and ensure the function's
+// contents are logged in the profile log.
 
-t = db.evalb;
-t.drop();
+// Use a reserved database name to avoid a conflict in the parallel test suite.
+var stddb = db;
+var db = db.getSisterDB( 'evalb' );
 
-t.save( { x : 3 } );
+function profileCursor() {
+    return db.system.profile.find( { user:username } );
+}
 
-assert.eq( 3, db.eval( function(){ return db.evalb.findOne().x; } ) , "A" );
+function lastOp() {
+    return profileCursor().sort( { $natural:-1 } ).next();
+}
 
-db.setProfilingLevel( 2 );
+try {
 
-assert.eq( 3, db.eval( function(){ return db.evalb.findOne().x; } ) , "B" );
+    username = 'jstests_evalb_user';
+    db.addUser( username, 'password', false, 1 );
+    db.auth( username, 'password' );
 
-o = db.system.profile.find().sort( { $natural : -1 } ).limit(1).next();
-assert( tojson(o).indexOf( "findOne().x" ) > 0 , "C : " + tojson( o ) )
+    t = db.evalb;
+    t.drop();
 
-db.setProfilingLevel( 0 );
+    t.save( { x:3 } );
 
+    assert.eq( 3, db.eval( function() { return db.evalb.findOne().x; } ), 'A' );
+
+    db.setProfilingLevel( 2 );
+
+    assert.eq( 3, db.eval( function() { return db.evalb.findOne().x; } ), 'B' );
+
+    o = lastOp();
+    assert( tojson( o ).indexOf( 'findOne().x' ) > 0, 'C : ' + tojson( o ) );
+}
+finally {
+
+    db.setProfilingLevel(0);
+    db = stddb;
+}