Merge psych-3.1.0.pre1.

  * Update bundled libyaml-0.2.1 from 0.1.7.
    https://github.com/ruby/psych/pull/368
  * Unify Psych's API: To use keyword arguments with method call.
    https://github.com/ruby/psych/pull/358

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64544 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 130 insertions, 0 deletions

diff --git a/test/psych/test_yaml_special_cases.rb b/test/psych/test_yaml_special_cases.rb
new file mode 100644
index 0000000000..66448d4efa
--- /dev/null
+++ b/test/psych/test_yaml_special_cases.rb
@@ -0,0 +1,130 @@
+# frozen_string_literal: true
+
+require_relative 'helper'
+
+require 'stringio'
+require 'tempfile'
+
+module Psych
+  class TestYamlSpecialCases < TestCase
+    def setup
+      super
+    end
+
+    def test_empty_string
+      s = ""
+      assert_equal false, Psych.load(s)
+      assert_equal [], Psych.load_stream(s)
+      assert_equal false, Psych.parse(s)
+      assert_equal [], Psych.parse_stream(s).transform
+      assert_equal nil, Psych.safe_load(s)
+    end
+
+    def test_false
+      s = "false"
+      assert_equal false, Psych.load(s)
+      assert_equal [false], Psych.load_stream(s)
+      assert_equal false, Psych.parse(s).transform
+      assert_equal [false], Psych.parse_stream(s).transform
+      assert_equal false, Psych.safe_load(s)
+    end
+
+    def test_n
+      s = "n"
+      assert_equal "n", Psych.load(s)
+      assert_equal ["n"], Psych.load_stream(s)
+      assert_equal "n", Psych.parse(s).transform
+      assert_equal ["n"], Psych.parse_stream(s).transform
+      assert_equal "n", Psych.safe_load(s)
+    end
+
+    def test_off
+      s = "off"
+      assert_equal false, Psych.load(s)
+      assert_equal [false], Psych.load_stream(s)
+      assert_equal false, Psych.parse(s).transform
+      assert_equal [false], Psych.parse_stream(s).transform
+      assert_equal false, Psych.safe_load(s)
+    end
+
+    def test_inf
+      s = "-.inf"
+      assert_equal -Float::INFINITY, Psych.load(s)
+      assert_equal [-Float::INFINITY], Psych.load_stream(s)
+      assert_equal -Float::INFINITY, Psych.parse(s).transform
+      assert_equal [-Float::INFINITY], Psych.parse_stream(s).transform
+      assert_equal -Float::INFINITY, Psych.safe_load(s)
+    end
+
+    def test_NaN
+      s = ".NaN"
+      assert Float::NAN, Psych.load(s).nan?
+      assert [Float::NAN], Psych.load_stream(s).first.nan?
+      assert Psych.parse(s).transform.nan?
+      assert Psych.parse_stream(s).transform.first.nan?
+      assert Psych.safe_load(s).nan?
+    end
+
+    def test_0xC
+      s = "0xC"
+      assert_equal 12, Psych.load(s)
+      assert_equal [12], Psych.load_stream(s)
+      assert_equal 12, Psych.parse(s).transform
+      assert_equal [12], Psych.parse_stream(s).transform
+      assert_equal 12, Psych.safe_load(s)
+    end
+
+    def test_arrows
+      s = "<<"
+      assert_equal "<<", Psych.load(s)
+      assert_equal ["<<"], Psych.load_stream(s)
+      assert_equal "<<", Psych.parse(s).transform
+      assert_equal ["<<"], Psych.parse_stream(s).transform
+      assert_equal "<<", Psych.safe_load(s)
+    end
+
+    def test_arrows_hash
+      s = "<<: {}"
+      assert_equal({}, Psych.load(s))
+      assert_equal [{}], Psych.load_stream(s)
+      assert_equal({}, Psych.parse(s).transform)
+      assert_equal [{}], Psych.parse_stream(s).transform
+      assert_equal({}, Psych.safe_load(s))
+    end
+
+    def test_thousand
+      s = "- 1000\n- +1000\n- 1_000"
+      assert_equal [1000, 1000, 1000], Psych.load(s)
+      assert_equal [[1000, 1000, 1000]], Psych.load_stream(s)
+      assert_equal [1000, 1000, 1000], Psych.parse(s).transform
+      assert_equal [[1000, 1000, 1000]], Psych.parse_stream(s).transform
+      assert_equal [1000, 1000, 1000], Psych.safe_load(s)
+    end
+
+    def test_8
+      s = "[8, 08, 0o10, 010]"
+      assert_equal [8, "08", "0o10", 8], Psych.load(s)
+      assert_equal [[8, "08", "0o10", 8]], Psych.load_stream(s)
+      assert_equal [8, "08", "0o10", 8], Psych.parse(s).transform
+      assert_equal [[8, "08", "0o10", 8]], Psych.parse_stream(s).transform
+      assert_equal [8, "08", "0o10", 8], Psych.safe_load(s)
+    end
+
+    def test_null
+      s = "null"
+      assert_equal nil, Psych.load(s)
+      assert_equal [nil], Psych.load_stream(s)
+      assert_equal nil, Psych.parse(s).transform
+      assert_equal [nil], Psych.parse_stream(s).transform
+      assert_equal nil, Psych.safe_load(s)
+    end
+
+    private
+
+    def special_case_cycle(object)
+      %w[load load_stream parse parse_stream safe_load].map do |m|
+        Psych.public_send(m, object)
+      end
+    end
+  end
+end