* ext/readline/readline.c: check $SAFE.

* test/readline/test_readline.rb: added tests for readline.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7309 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/readline/test_readline.rb

@@ -0,0 +1,57 @@
+begin
+  require "readline"
+rescue LoadError
+end
+
+if defined?(Readline)
+
+require "test/unit"
+require "tempfile"
+
+class TestReadline < Test::Unit::TestCase
+  def test_readline
+    stdin = Tempfile.new("test_readline_stdin")
+    stdout = Tempfile.new("test_readline_stdout")
+    begin
+      stdin.write("hello\n")
+      stdin.rewind
+      line = replace_stdio(stdin, stdout) { Readline.readline("> ") }
+      assert_equal("hello", line)
+      assert_equal(true, line.tainted?)
+      assert_raises(SecurityError) do
+        Thread.start {
+          $SAFE = 1
+          replace_stdio(stdin, stdout) { Readline.readline("> ".taint) }
+        }.join
+      end
+      assert_raises(SecurityError) do
+        Thread.start {
+          $SAFE = 4
+          replace_stdio(stdin, stdout) { Readline.readline("> ") }
+        }.join
+      end
+      stdout.rewind
+      assert_equal("> ", stdout.read(2))
+    ensure
+      stdin.close(true)
+      stdout.close(true)
+    end
+  end
+
+  private
+
+  def replace_stdio(stdin, stdout)
+    orig_stdin = STDIN.dup
+    orig_stdout = STDOUT.dup
+    STDIN.reopen(stdin)
+    STDOUT.reopen(stdout)
+    begin
+      yield
+    ensure
+      STDIN.reopen(orig_stdin)
+      STDOUT.reopen(orig_stdout)
+    end
+  end
+end
+
+end