From 7f7a19296b6ba3dbbef88c7d42e66cad5c3e9ac5 Mon Sep 17 00:00:00 2001
From: Austin Ziegler <austin@zieglers.ca>
Date: Tue, 7 Oct 2014 11:54:44 -0400
Subject: Increasing coverage on MIME::Types::Loader.

---
 lib/mime/types/loader.rb       | 33 ++++++++++++---------------------
 test/bad-fixtures/malformed    |  9 +++++++++
 test/test_mime_types_loader.rb | 13 +++++++++++--
 3 files changed, 32 insertions(+), 23 deletions(-)
 create mode 100644 test/bad-fixtures/malformed

diff --git a/lib/mime/types/loader.rb b/lib/mime/types/loader.rb
index c78ac0b..40ddd8d 100644
--- a/lib/mime/types/loader.rb
+++ b/lib/mime/types/loader.rb
@@ -11,10 +11,8 @@ require 'mime/types/loader_path'
 # 3.  The value of MIME::Types::Loader::PATH.
 #
 # When #load is called, the +path+ will be searched recursively for all YAML
-# (.yml or .yaml) files. By convention, there is one file for each media type
-# (application.yml, audio.yml, etc.), but this is not required.
-#
-#
+# (.yml or .yaml) files. By convention, there is one file for each media
+# type (application.yml, audio.yml, etc.), but this is not required.
 class MIME::Types::Loader
   # The path that will be read for the MIME::Types files.
   attr_reader :path
@@ -81,6 +79,8 @@ class MIME::Types::Loader
     container
   end
 
+  BadV1Format = Class.new(Exception)
+
   class << self
     # Loads the default MIME::Type registry.
     def load
@@ -124,36 +124,27 @@ class MIME::Types::Loader
     # more information that's available, though, the richer the values that can
     # be provided.
     def load_from_v1(filename)
+      MIME.deprecated(self.class, __method__)
       data = read_file(filename).split($/)
       mime = MIME::Types.new
       data.each_with_index { |line, index|
         item = line.chomp.strip
         next if item.empty?
 
-        begin
-          m = MIME::Types::Loader::V1_FORMAT.match(item).captures
-        rescue Exception
+        m = MIME::Types::Loader::V1_FORMAT.match(item)
+
+        unless m
           warn <<-EOS
-#{filename}:#{index}: Parsing error in v1 MIME type definition.
+#{filename}:#{index + 1}: Parsing error in v1 MIME type definition.
 => #{line}
           EOS
-          raise
+          raise BadV1Format, line
         end
 
         unregistered, obsolete, platform, mediatype, subtype, extensions,
-          encoding, urls, docs, comment = *m
+          encoding, urls, docs, comment = *m.captures
 
-        if mediatype.nil?
-          if comment.nil?
-            warn <<-EOS
-#{filename}:#{index}: Parsing error in v1 MIME type definition (no media type).
-=> #{line}
-            EOS
-            raise
-          end
-
-          next
-        end
+        next if mediatype.nil?
 
         extensions &&= extensions.split(/,/)
         urls &&= urls.split(/,/)
diff --git a/test/bad-fixtures/malformed b/test/bad-fixtures/malformed
new file mode 100644
index 0000000..2c716d4
--- /dev/null
+++ b/test/bad-fixtures/malformed
@@ -0,0 +1,9 @@
+!application.smil @smi,smil :8bit 'IANA,RFC4536 =use-instead:application/smil+xml
+!audio/vnd.qcelp @qcp 'IANA,RFC3625 =use-instead:audio/QCELP
+*!image/bmp @bmp =use-instead:image/x-bmp
+*application/acad 'LTSW
+*audio/webm @webm '{WebM=http://www.webmproject.org/code/specs/container/}
+*image/pjpeg :base64 =Fixes a bug with IE6 and progressive JPEGs
+application/1d-interleaved-parityfec 'IANA,RFC6015
+audio/1d-interleaved-parityfec 'IANA,RFC6015
+mac:application/x-apple-diskimage @dmg
diff --git a/test/test_mime_types_loader.rb b/test/test_mime_types_loader.rb
index 26ae584..61848ba 100644
--- a/test/test_mime_types_loader.rb
+++ b/test/test_mime_types_loader.rb
@@ -5,8 +5,9 @@ require 'minitest_helper'
 
 class TestMIMETypesLoader < Minitest::Test
   def setup
-    @path   = File.expand_path('../fixture', __FILE__)
-    @loader = MIME::Types::Loader.new(@path)
+    @path     = File.expand_path('../fixture', __FILE__)
+    @loader   = MIME::Types::Loader.new(@path)
+    @bad_path = File.expand_path('../bad-fixtures', __FILE__)
   end
 
   def assert_correctly_loaded(types)
@@ -39,4 +40,12 @@ class TestMIMETypesLoader < Minitest::Test
   def test_load_v1
     assert_correctly_loaded(@loader.load_v1)
   end
+
+  def test_malformed_v1
+    assert_output(nil, /1: Parsing error in v1 MIME type definition/) {
+      assert_raises(MIME::Types::Loader::BadV1Format) {
+        MIME::Types::Loader.load_from_v1(File.join(@bad_path, 'malformed'))
+      }
+    }
+  end
 end
-- 
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