Fix get_boolean_pragma comparison:

lib/sqlite3/pragmas.rb

@@ -11,7 +11,7 @@ module Pragmas
 
     # Returns +true+ or +false+ depending on the value of the named pragma.
     def get_boolean_pragma( name )
-      get_first_value( "PRAGMA #{name}" ) != "0"
+      get_first_value( "PRAGMA #{name}" ) != 0
     end
 
     # Sets the given pragma to the given boolean value. The value itself
@@ -260,7 +260,7 @@ def full_column_names
     def full_column_names=( mode )
       set_boolean_pragma "full_column_names", mode
     end
-  
+
     def fullfsync
       get_boolean_pragma "fullfsync"
     end
@@ -356,7 +356,7 @@ def page_size=( size )
     def parser_trace=( mode )
       set_boolean_pragma "parser_trace", mode
     end
-  
+
     def query_only
       get_boolean_pragma "query_only"
     end

test/test_pragmas.rb

@@ -0,0 +1,22 @@
+require 'helper'
+
+module SQLite3
+  class TestPragmas < SQLite3::TestCase
+    def setup
+      super
+      @db = SQLite3::Database.new(":memory:")
+    end
+
+    def test_get_boolean_pragma
+      refute(@db.get_boolean_pragma("read_uncommitted"))
+    end
+
+    def test_set_boolean_pragma
+      @db.set_boolean_pragma("read_uncommitted", 1)
+
+      assert(@db.get_boolean_pragma("read_uncommitted"))
+    ensure
+      @db.set_boolean_pragma("read_uncommitted", 0)
+    end
+  end
+end