[rubygems/rubygems] Remove unnecessary tests

We will be passing string to this class so there is no need to be defensive about it.

rubygems/rubygems@30bd52a977

test/rubygems/test_gem_printable_uri.rb

@@ -1,24 +1,11 @@
 require_relative 'helper'
-require 'uri'
 require 'rubygems/printable_uri'
 
 class TestPrintableUri < Gem::TestCase
   def test_parsed_uri
     assert_equal true, Gem::PrintableUri.parse_uri("https://www.example.com").valid_uri?
   end
 
-  def test_valid_uri_with_empty_uri_object
-    assert_equal true, Gem::PrintableUri.parse_uri(URI("")).valid_uri?
-  end
-
-  def test_valid_uri_with_valid_uri_object
-    assert_equal true, Gem::PrintableUri.parse_uri(URI("https://www.example.com")).valid_uri?
-  end
-
-  def test_valid_uri_with_other_objects
-    assert_equal false, Gem::PrintableUri.parse_uri(Object.new).valid_uri?
-  end
-
   def test_valid_uri_with_invalid_uri
     assert_equal false, Gem::PrintableUri.parse_uri("https://www.example.com:80index").valid_uri?
   end
@@ -35,14 +22,6 @@ def test_original_password_without_credential
     assert_equal nil, Gem::PrintableUri.parse_uri("https://www.example.com").original_password
   end
 
-  def test_original_password_with_empty_uri_object
-    assert_equal nil, Gem::PrintableUri.parse_uri(URI("")).original_password
-  end
-
-  def test_original_password_with_valid_uri_object
-    assert_equal "pass", Gem::PrintableUri.parse_uri(URI("https://user:pass@example.com")).original_password
-  end
-
   def test_to_s_with_user_pass
     assert_equal "https://user:REDACTED@example.com", Gem::PrintableUri.parse_uri("https://user:pass@example.com").to_s
   end
@@ -62,19 +41,4 @@ def test_to_s_without_credential
   def test_to_s_with_invalid_uri
     assert_equal "https://www.example.com:80index", Gem::PrintableUri.parse_uri("https://www.example.com:80index").to_s
   end
-
-  def test_to_s_with_empty_uri_object
-    assert_equal "", Gem::PrintableUri.parse_uri(URI("")).to_s
-  end
-
-  def test_to_s_with_valid_uri_object
-    assert_equal "https://user:REDACTED@example.com", Gem::PrintableUri.parse_uri(URI("https://user:pass@example.com")).to_s
-  end
-
-  def test_to_s_with_other_objects
-    obj = Object.new
-    obj.stub(:to_s, "my-to-s") do
-      assert_equal "my-to-s", Gem::PrintableUri.parse_uri(obj).to_s
-    end
-  end
 end