Installation tests now use the actual installer

Library/Homebrew/test/test_formula_installer.rb

@@ -0,0 +1,70 @@
+require "testing_env"
+require "formula"
+require "compat/formula_specialties"
+require "formula_installer"
+require "keg"
+require "testball"
+
+class InstallTests < Homebrew::TestCase
+  def temporary_install(formula)
+    refute_predicate formula, :installed?
+
+    installer = FormulaInstaller.new(formula)
+
+    shutup { installer.install }
+
+    keg = Keg.new(formula.prefix)
+
+    assert_predicate formula, :installed?
+
+    begin
+      yield formula
+    ensure
+      keg.unlink
+      keg.uninstall
+      formula.clear_cache
+    end
+
+    refute_predicate keg, :exist?
+    refute_predicate formula, :installed?
+  end
+
+  def test_a_basic_install
+    temporary_install(Testball.new) do |f|
+      # Test that things made it into the Keg
+      assert_predicate f.bin, :directory?
+      assert_equal 3, f.bin.children.length
+
+      assert_predicate f.libexec, :directory?
+      assert_equal 1, f.libexec.children.length
+
+      refute_predicate f.prefix+'main.c', :exist?
+
+      # Test that things make it into the Cellar
+      keg = Keg.new f.prefix
+      keg.link
+
+      bin = HOMEBREW_PREFIX+"bin"
+      assert_predicate bin, :directory?
+      assert_equal 3, bin.children.length
+    end
+  end
+
+  def test_script_install
+    mktmpdir do |dir|
+      name = "test_script_formula"
+      path = Pathname.new(dir)+"#{name}.rb"
+
+      path.write <<-EOS.undent
+        class #{Formulary.class_s(name)} < ScriptFileFormula
+          url "file://#{File.expand_path(__FILE__)}"
+          version "1"
+        end
+        EOS
+
+      f = Formulary.factory(path.to_s)
+
+      temporary_install(f) { assert_equal 1, f.bin.children.length }
+    end
+  end
+end

Library/Homebrew/test/testball.rb

@@ -1,7 +1,7 @@
 class Testball < Formula
   def initialize(name="testball", path=Pathname.new(__FILE__).expand_path, spec=:stable)
     self.class.instance_eval do
-      stable.url "file://#{TEST_DIRECTORY}/tarballs/testball-0.1.tbz"
+      stable.url "file://#{File.expand_path("..", __FILE__)}/tarballs/testball-0.1.tbz"
       stable.sha1 "482e737739d946b7c8cbaf127d9ee9c148b999f5"
     end
     super