[ruby/pathname] Add more tests for `Pathname#initialize`

https://github.com/ruby/pathname/commit/a2edd25bc1

1 files changed, 11 insertions, 0 deletions

diff --git a/test/pathname/test_pathname.rb b/test/pathname/test_pathname.rb
index e2d6a09fb2..10ab154220 100644
--- a/test/pathname/test_pathname.rb
+++ b/test/pathname/test_pathname.rb
@@ -486,6 +486,13 @@ class TestPathname < Test::Unit::TestCase
     assert_equal(p1, p2)
 
     obj = Object.new
+    assert_raise(TypeError) { Pathname.new(obj) }
+
+    obj = Object.new
+    def obj.to_path; "a/path"; end
+    assert_equal("a/path", Pathname.new(obj).to_s)
+
+    obj = Object.new
     def obj.to_str; "a/b"; end
     assert_equal("a/b", Pathname.new(obj).to_s)
   end
@@ -494,6 +501,10 @@ class TestPathname < Test::Unit::TestCase
     assert_raise(ArgumentError) { Pathname.new("a\0") }
   end
 
+  def test_initialize_encoding
+    assert_raise(Encoding::CompatibilityError) { Pathname.new("a".encode(Encoding::UTF_32BE)) }
+  end
+
   def test_global_constructor
     p = Pathname.new('a')
     assert_equal(p, Pathname('a'))