Clearer tests for sorting and limits on queries

tests/test_db_api.rb

@@ -111,12 +111,14 @@ class DBAPITest < Test::Unit::TestCase
     # Sorting (ascending)
     docs = @coll.find({'a' => { '$lt' => 10 }}, :sort => [{'a' => 1}]).map{ |x| x }
     assert_equal 2, docs.size
-    assert_equal 1, docs.first['a']
+    assert_equal 1, docs[0]['a']
+    assert_equal 2, docs[1]['a']
 
     # Sorting (descending)
     docs = @coll.find({'a' => { '$lt' => 10 }}, :sort => [{'a' => -1}]).map{ |x| x }
     assert_equal 2, docs.size
-    assert_equal 2, docs.first['a']
+    assert_equal 2, docs[0]['a']
+    assert_equal 1, docs[1]['a']
 
     # Sorting using array of names; assumes ascending order.
     docs = @coll.find({'a' => { '$lt' => 10 }}, :sort => ['a']).map{ |x| x }
@@ -133,26 +135,25 @@ class DBAPITest < Test::Unit::TestCase
     oh['a'] = -1
     docs = @coll.find({'a' => { '$lt' => 10 }}, :sort => oh).map{ |x| x }
     assert_equal 2, docs.size
-    assert_equal 2, docs.first['a']
+    assert_equal 2, docs[0]['a']
+    assert_equal 1, docs[1]['a']
   end
 
   def test_find_limits
-    @coll.insert('a' => 2)
-    @coll.insert('b' => 3)
-    @coll.insert('c' => 4)
-
+    @coll.insert('b' => 2)
+    @coll.insert('c' => 3)
+    @coll.insert('d' => 4)
+  
     docs = @coll.find({}, :limit => 1).map{ |x| x }
-    puts "docs : #{docs.size}"
     assert_equal 1, docs.size
     docs = @coll.find({}, :limit => 2).map{ |x| x }
-    puts "docs : #{docs.size}"
     assert_equal 2, docs.size
     docs = @coll.find({}, :limit => 3).map{ |x| x }
-    puts "docs : #{docs.size}"
     assert_equal 3, docs.size
+    docs = @coll.find({}, :limit => 4).map{ |x| x }
+    assert_equal 4, docs.size
     docs = @coll.find({}).map{ |x| x }
-    puts "docs : #{docs.size}"
-    assert_equal 3, docs.size
+    assert_equal 4, docs.size
   end
 
   def test_close