naruse	2018-10-29 01:06:56 +0900 (Mon, 29 Oct 2018)

  New Revision: 65422

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=65422

  Log:
    Add test for cause on pty

  Modified files:
    trunk/test/ruby/test_backtrace.rb
Index: test/ruby/test_backtrace.rb
===================================================================
--- test/ruby/test_backtrace.rb	(revision 65421)
+++ test/ruby/test_backtrace.rb	(revision 65422)
@@ -1,6 +1,7 @@ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_backtrace.rb#L1
 # frozen_string_literal: false
 require 'test/unit'
 require 'tempfile'
+require 'pty'
 
 class TestBacktrace < Test::Unit::TestCase
   def test_exception
@@ -321,6 +322,54 @@ class TestBacktrace < Test::Unit::TestCa https://github.com/ruby/ruby/blob/trunk/test/ruby/test_backtrace.rb#L322
     def foo
       raise "foo!"
     end
+    def bar
+      foo
+    rescue
+      raise "bar!"
+    end
+    bar
+    end;
+  end
+
+  def assert_pty(args, test_stdin = "", dummy, expected)
+    actual = nil
+    PTY.spawn(EnvUtil.rubybin, *args) do |r, w, pid|
+      w.puts test_stdin
+      w.puts "__END__"
+      w.close
+      actual = r.read
+    end
+    expected = test_stdin.chomp + "\n__END__\n" + expected.to_s
+    expected.gsub!(/\n/, "\r\n")
+    assert_equal expected, actual
+  end
+
+  def test_tty_backtrace
+    err = "\e[1mTraceback\e[m (most recent call last):\n" +
+           "-:1:in `<main>': \e[1m\e[1;4munhandled exception\e[m\n"
+    assert_pty([], "raise", [], err)
+
+    err = "\e[1mTraceback\e[m (most recent call last):\n" +
+      "\t1: from -:4:in `<main>'\n" +
+      "-:2:in `foo': \e[1mfoo! (\e[1;4mRuntimeError\e[m\e[1m)\e[m\n"
+    assert_pty([], <<-"end;", [], err)
+    def foo
+      raise "foo!"
+    end
+    foo
+    end;
+
+    err = "\e[1mTraceback\e[m (most recent call last):\n" +
+      "\t2: from -:9:in `<main>'\n" +
+      "\t1: from -:5:in `bar'\n" +
+      "-:2:in `foo': \e[1mfoo! (\e[1;4mRuntimeError\e[m\e[1m)\e[m\n" +
+      "\t2: from -:9:in `<main>'\n" +
+      "\t1: from -:4:in `bar'\n" +
+      "-:7:in `rescue in bar': \e[1mbar! (\e[1;4mRuntimeError\e[m\e[1m)\e[m\n"
+    assert_pty([], <<-"end;", [], err)
+    def foo
+      raise "foo!"
+    end
     def bar
       foo
     rescue

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