From 422ec29363f26d4f343f0a364e9873e0a8d79615 Mon Sep 17 00:00:00 2001
From: Max Howell <max@methylblue.com>
Date: Wed, 2 Sep 2009 14:31:28 +0100
Subject: [PATCH] Tests for Pathname+Yeast

I removed the rename and mv functions as when I wrote the tests I realised the function implied the pathname object would be updated to reflect the moved or renamed file. However that cannot be done. Also frankly I think writing it out in full makes clearer code.
---
 Library/Homebrew/download_strategy.rb |  5 +++-
 Library/Homebrew/pathname+yeast.rb    | 23 +++++++-------
 Library/Homebrew/unittest.rb          | 43 +++++++++++++++++++++++++++
 3 files changed, 57 insertions(+), 14 deletions(-)

diff --git a/Library/Homebrew/download_strategy.rb b/Library/Homebrew/download_strategy.rb
index 75dd60d36d..341bdb765a 100644
--- a/Library/Homebrew/download_strategy.rb
+++ b/Library/Homebrew/download_strategy.rb
@@ -55,7 +55,10 @@ class HttpDownloadStrategy <AbstractDownloadStrategy
       else
         # we are assuming it is not an archive, use original filename
         # this behaviour is due to ScriptFileFormula expectations
-        @dl.mv File.basename(@url)
+        # So I guess we should cp, but we mv, for this historic reason
+        # HOWEVER if this breaks some expectation you had we *will* change the
+        # behaviour, just open an issue at github
+        FileUtils.mv @dl, File.basename(@url)
     end
   end
 private
diff --git a/Library/Homebrew/pathname+yeast.rb b/Library/Homebrew/pathname+yeast.rb
index a24532db11..091b0379ff 100644
--- a/Library/Homebrew/pathname+yeast.rb
+++ b/Library/Homebrew/pathname+yeast.rb
@@ -25,16 +25,6 @@ require 'pathname'
 
 # we enhance pathname to make our code more readable
 class Pathname
-  def mv dst    
-    FileUtils.mv to_s, dst
-  end
-
-  def rename newname
-    dst=dirname+newname
-    dst.unlink if dst.exist? and file?
-    mv dst
-  end
-
   def install src
     if src.is_a? Array
       src.collect {|src| install src }
@@ -50,13 +40,14 @@ class Pathname
         # this function when installing from the temporary build directory
         FileUtils.mv src, to_s
       end
-      return self+src
+      src=Pathname.new src
+      return self+src.basename
     end
   end
   
   # we assume this pathname object is a file obviously
   def write content
-    raise "Will not overwrite #{f}" if exist? and not ARGV.force?
+    raise "Will not overwrite #{to_s}" if exist? and not ARGV.force?
     dirname.mkpath
     File.open(self, 'w') {|f| f.write content }
   end
@@ -67,6 +58,7 @@ class Pathname
     else
       FileUtils.cp_r to_s, dst
     end
+    return dst
   end
 
   # extended to support the double extensions .tar.gz and .tar.bz2
@@ -86,8 +78,10 @@ class Pathname
   # instead rely on good ol' libc and the filesystem
   def rmdir_if_possible
     rmdir
+    true
   rescue SystemCallError => e
     raise unless e.errno == Errno::ENOTEMPTY::Errno or e.errno == Errno::EACCES::Errno
+    false
   end
   
   def chmod_R perms
@@ -96,7 +90,10 @@ class Pathname
   end
 
   def abv
-    `find #{to_s} -type f | wc -l`.strip+' files, '+`du -hd0 #{to_s} | cut -d"\t" -f1`.strip
+    out=''
+    n=`find #{to_s} -type f | wc -l`.to_i
+    out<<"#{n} files, " if n > 1
+    out<<`du -hd0 #{to_s} | cut -d"\t" -f1`.strip
   end
 
   def version
diff --git a/Library/Homebrew/unittest.rb b/Library/Homebrew/unittest.rb
index 7a3d70ac52..7943640fd4 100755
--- a/Library/Homebrew/unittest.rb
+++ b/Library/Homebrew/unittest.rb
@@ -362,4 +362,47 @@ class BeerTasting <Test::Unit::TestCase
     assert_equal 10.5, f-0.1
     assert_equal 10.7, f+0.1
   end
+
+  def test_pathname_plus_yeast
+    nostdout do
+      assert_nothing_raised do
+        assert !Pathname.getwd.rmdir_if_possible
+        assert !Pathname.getwd.abv.empty?
+        
+        abcd=orig_abcd=HOMEBREW_CACHE+'abcd'
+        FileUtils.cp ABS__FILE__, abcd
+        abcd=HOMEBREW_PREFIX.install abcd
+        assert (HOMEBREW_PREFIX+orig_abcd.basename).exist?
+        assert abcd.exist?
+        assert_equal HOMEBREW_PREFIX+'abcd', abcd
+
+        assert_raises(RuntimeError) {abcd.write 'CONTENT'}
+        abcd.unlink
+        abcd.write 'HELLOWORLD'
+        assert_equal 'HELLOWORLD', File.read(abcd)
+        
+        assert !orig_abcd.exist?
+        rv=abcd.cp orig_abcd
+        assert orig_abcd.exist?
+        assert_equal rv, orig_abcd
+
+        orig_abcd.unlink
+        assert !orig_abcd.exist?
+        abcd.cp HOMEBREW_CACHE
+        assert orig_abcd.exist?
+
+        foo1=HOMEBREW_CACHE+'foo-0.1.tar.gz'
+        FileUtils.cp ABS__FILE__, foo1
+        assert foo1.file?
+        
+        assert_equal '.tar.gz', foo1.extname
+        assert_equal 'foo-0.1', foo1.stem
+        assert_equal '0.1', foo1.version
+        
+        HOMEBREW_CACHE.chmod_R 0777
+      end
+    end
+    
+    assert_raises(RuntimeError) {Pathname.getwd.install 'non_existant_file'}
+  end
 end