[macruby-changes] [1403] MacRuby/branches/experimental/spec/frozen/core/string/ valid_encoding_spec.rb

[source_changes at macosforge.org]

Revision: 1403
          http://trac.macosforge.org/projects/ruby/changeset/1403
Author:   vincent.isambart at gmail.com
Date:     2009-04-08 22:58:22 -0700 (Wed, 08 Apr 2009)
Log Message:
-----------
first try at making a 1.9 spec

Added Paths:
-----------
    MacRuby/branches/experimental/spec/frozen/core/string/valid_encoding_spec.rb

Added: MacRuby/branches/experimental/spec/frozen/core/string/valid_encoding_spec.rb
===================================================================
--- MacRuby/branches/experimental/spec/frozen/core/string/valid_encoding_spec.rb	                        (rev 0)
+++ MacRuby/branches/experimental/spec/frozen/core/string/valid_encoding_spec.rb	2009-04-09 05:58:22 UTC (rev 1403)
@@ -0,0 +1,49 @@
+# coding: UTF-8
+ruby_version_is "1.9" do
+  describe "String#valid_encoding?" do
+    it "returns true for a valid encoding" do
+      "abcdef".valid_encoding?.should be_true
+      "こんにちは".valid_encoding?.should be_true
+      "\xE3\x81\x82".valid_encoding?.should be_true # 'あ' in UTF-8
+    end
+
+    it "returns true for a valid encoding and a null character" do
+      "abc\0def".valid_encoding?.should be_true
+      "こん\0にちは".valid_encoding?.should be_true
+      "\0\xE3\x81\x82".valid_encoding?.should be_true # 'あ' in UTF-8
+    end
+
+    it "always returns true for binary encoding" do
+      'abcdef'.force_encoding('ASCII-8BIT').valid_encoding?.should be_true
+      'こんにちは'.force_encoding('ASCII-8BIT').valid_encoding?.should be_true
+      "\xE3\x81\x82".force_encoding('ASCII-8BIT').valid_encoding?.should be_true # 'あ' in UTF-8
+      "\xE3".force_encoding('ASCII-8BIT').valid_encoding?.should be_true
+    end
+
+    it "returns false for an invalid encoding" do
+      "\xE3".valid_encoding?.should be_false
+      "\xE3\x0\x82".valid_encoding?.should be_false
+      "\xA4\xA2".valid_encoding?.should be_false # 'あ' in EUC-JP (invalid UTF-8)
+    end
+
+    it "returns false when a valid encoding has been made invalid" do
+      str = 'こんにちは'
+      str.setbyte(0, 0)
+      str.valid_encoding?.should be_false
+
+      str = 'こんにちは'
+      str.force_encoding('EUC-JP')
+      str.valid_encoding?.should be_false
+    end
+
+    it "returns true for an invalid encoding made valid" do
+      str = "\xE3\x0\x82"
+      str.setbyte(1, 0x81)
+      str.valid_encoding?.should be_true
+
+      str = "\xA4\xA2" # 'あ' in EUC-JP
+      str.force_encoding('EUC-JP') # set the correct encoding
+      str.valid_encoding?.should be_true
+    end
+  end
+end
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