1 files changed, 82 insertions, 0 deletions
diff --git a/test/test_tmpdir.rb b/test/test_tmpdir.rb
new file mode 100644
index 0000000000..fffec94788
--- /dev/null
+++ b/test/test_tmpdir.rb
@@ -0,0 +1,82 @@
+# frozen_string_literal: true
+require 'test/unit'
+require 'tmpdir'
+
+class TestTmpdir < Test::Unit::TestCase
+  def test_tmpdir_modifiable
+    tmpdir = Dir.tmpdir
+    assert_equal(false, tmpdir.frozen?)
+    tmpdir_org = tmpdir.dup
+    tmpdir << "foo"
+    assert_equal(tmpdir_org, Dir.tmpdir)
+  end
+
+  def test_tmpdir_modifiable_safe
+    Thread.new {
+      $SAFE = 1
+      tmpdir = Dir.tmpdir
+      assert_equal(false, tmpdir.frozen?)
+      tmpdir_org = tmpdir.dup
+      tmpdir << "foo"
+      assert_equal(tmpdir_org, Dir.tmpdir)
+    }.join
+  end
+
+  def test_world_writable
+    skip "no meaning on this platform" if /mswin|mingw/ =~ RUBY_PLATFORM
+    Dir.mktmpdir do |tmpdir|
+      # ToDo: fix for parallel test
+      olddir, ENV["TMPDIR"] = ENV["TMPDIR"], tmpdir
+      begin
+        assert_equal(tmpdir, Dir.tmpdir)
+        File.chmod(0777, tmpdir)
+        assert_not_equal(tmpdir, Dir.tmpdir)
+        newdir = Dir.mktmpdir("d", tmpdir) do |dir|
+          assert_file.directory? dir
+          assert_equal(tmpdir, File.dirname(dir))
+          dir
+        end
+        assert_file.not_exist?(newdir)
+        File.chmod(01777, tmpdir)
+        assert_equal(tmpdir, Dir.tmpdir)
+      ensure
+        ENV["TMPDIR"] = olddir
+      end
+    end
+  end
+
+  def test_no_homedir
+    bug7547 = '[ruby-core:50793]'
+    home, ENV["HOME"] = ENV["HOME"], nil
+    dir = assert_nothing_raised(bug7547) do
+      break Dir.mktmpdir("~")
+    end
+    assert_match(/\A~/, File.basename(dir), bug7547)
+  ensure
+    ENV["HOME"] = home
+    Dir.rmdir(dir) if dir
+  end
+
+  def test_mktmpdir_nil
+    Dir.mktmpdir(nil) {|d|
+      assert_kind_of(String, d)
+    }
+  end
+
+  TRAVERSAL_PATH = Array.new(Dir.pwd.split('/').count, '..').join('/') + Dir.pwd + '/'
+  TRAVERSAL_PATH.delete!(':') if /mswin|mingw/ =~ RUBY_PLATFORM
+
+  def test_mktmpdir_traversal
+    expect = Dir.glob(TRAVERSAL_PATH + '*').count
+    Dir.mktmpdir(TRAVERSAL_PATH + 'foo')
+    actual = Dir.glob(TRAVERSAL_PATH + '*').count
+    assert_equal expect, actual
+  end
+
+  def test_mktmpdir_traversal_array
+    expect = Dir.glob(TRAVERSAL_PATH + '*').count
+    Dir.mktmpdir([TRAVERSAL_PATH, 'foo'])
+    actual = Dir.glob(TRAVERSAL_PATH + '*').count
+    assert_equal expect, actual
+  end
+end