From 11ca295071cbe63363b3038f94adf81c2c77de93 Mon Sep 17 00:00:00 2001
From: Dmitry Borisov <scorpion061181@gmail.com>
Date: Thu, 29 Nov 2018 09:50:13 +0300
Subject: [PATCH] Should work for readed ios

---
 lib/fastimage.rb |  1 +
 test/test.rb     | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/lib/fastimage.rb b/lib/fastimage.rb
index c00f965..975b664 100644
--- a/lib/fastimage.rb
+++ b/lib/fastimage.rb
@@ -332,6 +332,7 @@ class FastImage
   end
 
   def fetch_using_read(readable)
+    readable.rewind if readable.respond_to?(:rewind)
     # Pathnames respond to read, but always return the first
     # chunk of the file unlike an IO (even though the
     # docuementation for it refers to IO). Need to supply
diff --git a/test/test.rb b/test/test.rb
index 51efd28..dca9609 100644
--- a/test/test.rb
+++ b/test/test.rb
@@ -178,6 +178,24 @@ class FastImageTest < Test::Unit::TestCase
     end
   end
 
+  def test_should_report_type_correctly_for_ios_that_have_been_read
+    GoodFixtures.each do |fn, info|
+      File.open(File.join(FixturePath, fn), "r") do |io|
+        io.read
+        assert_equal info[0], FastImage.type(io)
+      end
+    end
+  end
+
+  def test_should_report_size_correctly_for_ios_that_have_been_read
+    GoodFixtures.each do |fn, info|
+      File.open(File.join(FixturePath, fn), "r") do |io|
+        io.read
+        assert_equal info[1], FastImage.size(io)
+      end
+    end
+  end
+
   def test_should_report_size_correctly_on_io_object_twice
     GoodFixtures.each do |fn, info|
       File.open(File.join(FixturePath, fn), "r") do |io|