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diff --git a/spec/unit/provider/interface/redhat.rb b/spec/unit/provider/interface/redhat.rb
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+++ b/spec/unit/provider/interface/redhat.rb
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+#!/usr/bin/env ruby
+#
+#  Created by Luke Kanies on 2007-11-20.
+#  Copyright (c) 2006. All rights reserved.
+
+require File.dirname(__FILE__) + '/../../../spec_helper'
+
+provider_class = Puppet::Type.type(:interface).provider(:redhat)
+
+describe provider_class do
+    it "should not be functional on systems without a network-scripts directory" do
+        FileTest.expects(:exist?).with("/etc/sysconfig/network-scripts").returns(false)
+        provider_class.should_not be_suitable
+    end
+
+    it "should be functional on systems with a network-scripts directory" do
+        FileTest.expects(:exist?).with("/etc/sysconfig/network-scripts").returns(true)
+        provider_class.should be_suitable
+    end
+end
+
+describe provider_class, " when determining the file path" do
+    it "should always contain '/etc/sysconfig/network-scripts/ifcfg-'" do
+        provider = provider_class.new(:name => "192.168.0.1")
+        provider.file_path.should =~ %r{^/etc/sysconfig/network-scripts/ifcfg-}
+    end
+
+    it "should include the interface name and the description when the interface is an alias" do
+        provider = provider_class.new(:name => "192.168.0.1", :interface => "eth0")
+        provider.interface_type = :alias
+        resource = stub 'resource'
+        resource.stubs(:[]).with(:interface_desc).returns("blah")
+        provider.resource = resource
+        provider.file_path.should == "/etc/sysconfig/network-scripts/ifcfg-eth0:blah"
+    end
+
+    it "should just include the description when the interface is not an alias" do
+        provider = provider_class.new(:name => "192.168.0.1")
+        provider.interface_type = :normal
+        resource = stub 'resource'
+        resource.stubs(:[]).with(:interface_desc).returns("eth0")
+        provider.resource = resource
+        provider.file_path.should == "/etc/sysconfig/network-scripts/ifcfg-eth0"
+    end
+
+    it "should use the interface description if one is available" do
+        provider = provider_class.new(:name => "192.168.0.1")
+        provider.interface_type = :normal
+        resource = stub 'resource'
+        resource.stubs(:[]).with(:interface_desc).returns("eth0")
+        provider.resource = resource
+        provider.file_path.should == "/etc/sysconfig/network-scripts/ifcfg-eth0"
+    end
+
+    it "should use the name if no interface description is available" do
+        provider = provider_class.new(:name => "192.168.0.1")
+        provider.interface_type = :normal
+        provider.file_path.should == "/etc/sysconfig/network-scripts/ifcfg-192.168.0.1"
+    end
+
+    it "should fail if no name or interface description can be found" do
+        provider = provider_class.new()
+        proc { provider.file_path }.should raise_error
+    end
+end
+
+describe provider_class, " when returning instances" do
+    it "should consider each file in the network-scripts directory an interface instance" do
+        Dir.expects(:glob).with("/etc/sysconfig/network-scripts/ifcfg-*").returns(%w{one two})
+        one = {:name => "one"}
+        two = {:name => "two"}
+        Puppet::Type::Interface::ProviderRedhat.expects(:parse).with("one").returns(one)
+        Puppet::Type::Interface::ProviderRedhat.expects(:parse).with("two").returns(two)
+        Puppet::Type::Interface::ProviderRedhat.expects(:new).with(one).returns(:one)
+        Puppet::Type::Interface::ProviderRedhat.expects(:new).with(two).returns(:two)
+        Puppet::Type::Interface::ProviderRedhat.instances.should == [:one, :two]
+    end
+end
+
+describe provider_class, " when parsing" do
+    it "should return an unmodified provider if the file does not exist" do
+        FileTest.expects(:exist?).with("/my/file").returns(false)
+        provider = mock 'provider'
+        Puppet::Type::Interface::ProviderRedhat.expects(:new).returns(provider)
+        Puppet::Type::Interface::ProviderRedhat.parse("/my/file").should equal(provider)
+    end
+
+    it "should set each attribute in the file on the provider" do
+        FileTest.expects(:exist?).with("/my/file").returns(true)
+        File.expects(:readlines).with("/my/file").returns(%w{one=two three=four})
+        provider = mock 'provider'
+        Puppet::Type::Interface::ProviderRedhat.expects(:new).returns(provider)
+        provider.expects(:one=).with('two')
+        provider.expects(:three=).with('four')
+        Puppet::Type::Interface::ProviderRedhat.parse("/my/file").should equal(provider)
+    end
+end
+
+describe provider_class, " when setting the device to a value containing ':'" do
+    before do
+        @provider = Puppet::Type::Interface::ProviderRedhat.new
+        @provider.device = "one:two"
+    end
+    it "should set the interface type to :alias" do
+        @provider.interface_type.should == :alias
+    end
+    it "should set the interface to the string to the left of the ':'" do
+        @provider.interface.should == "one"
+    end
+    it "should set the ifnum to the string to the right of the ':'" do
+        @provider.ifnum.should == "two"
+    end
+end
+
+describe provider_class, " when setting the device to a value starting with 'dummy-'" do
+    before do
+        @provider = Puppet::Type::Interface::ProviderRedhat.new
+        @provider.device = "dummy5"
+    end
+    it "should set the interface type to :loopback" do
+        @provider.interface_type.should == :loopback
+    end
+    it "should set the interface to 'dummy'" do
+        @provider.interface.should == "dummy"
+    end
+    it "should set the ifnum to remainder of value after removing 'dummy'" do
+        @provider.ifnum.should == "5"
+    end
+end
+
+describe provider_class, " when setting the device to a value containing neither 'dummy-' nor ':'" do
+    before do
+        @provider = Puppet::Type::Interface::ProviderRedhat.new
+        @provider.device = "whatever"
+    end
+    it "should set the interface type to :normal" do
+        @provider.interface_type.should == :normal
+    end
+    it "should set the interface to the device value" do
+        @provider.interface.should == "whatever"
+    end
+end
+
+describe provider_class, " when setting the on_boot value" do
+    before do
+        @provider = Puppet::Type::Interface::ProviderRedhat.new
+    end
+    it "should set it to :true if the value is 'yes'" do
+        @provider.on_boot = "yes"
+        @provider.onboot.should == :true
+    end
+    it "should set it to :false if the value is not 'yes'" do
+        @provider.on_boot = "no"
+        @provider.onboot.should == :false
+    end
+end
+
+describe provider_class, " when setting the ipaddr value" do
+    before do
+        @provider = Puppet::Type::Interface::ProviderRedhat.new
+    end
+
+    it "should set the name to the provided value" do
+        @provider.ipaddr = "yay"
+        @provider.name.should == "yay"
+    end
+end
+
+describe provider_class, " when generating" do
+    before do
+        @provider = Puppet::Type::Interface::ProviderRedhat.new
+        @provider.interface_type = :alias
+        @provider.stubs(:device).returns("mydevice")
+        @provider.stubs(:on_boot).returns("myboot")
+        @provider.stubs(:name).returns("myname")
+        @provider.stubs(:netmask).returns("mynetmask")
+        @provider.interface_type = :alias
+
+        @text = @provider.generate
+    end
+
+    it "should set the bootproto to none if the interface is an alias" do
+        @text.should =~ /^BOOTPROTO=none$/
+    end
+
+    it "should set the bootproto to static if the interface is a loopback" do
+        @provider.interface_type = :loopback
+        @text = @provider.generate
+        @text.should =~ /^BOOTPROTO=static$/
+    end
+
+    it "should set the broadcast address to nothing" do
+        @text.should =~ /^BROADCAST=$/
+    end
+
+    it "should set the netmask to mynetmask" do
+        @text.should =~ /^NETMASK=mynetmask$/
+    end
+
+    it "should set the device to the provider's device" do
+        @text.should =~ /^DEVICE=mydevice$/
+    end
+
+    it "should set the onboot to the provider's on_boot value" do
+        @text.should =~ /^ONBOOT=myboot$/
+    end
+
+    it "should set the ipaddr to the provider's name" do
+        @text.should =~ /^IPADDR=myname$/
+    end
+end
+
+describe provider_class, " when creating and destroying" do
+    before do
+        @provider = provider_class.new(:interface => "eth0", :name => "testing")
+        @path = "/etc/sysconfig/network-scripts/ifcfg-testing"
+    end
+
+    it "should consider the interface present if the file exists" do
+        FileTest.expects(:exist?).with(@path).returns(true)
+        @provider.should be_exists
+    end
+
+    it "should consider the interface absent if the file does not exist" do
+        FileTest.expects(:exist?).with(@path).returns(false)
+        @provider.should_not be_exists
+    end
+
+    it "should remove the file if the interface is being destroyed" do
+        File.expects(:unlink).with(@path)
+        @provider.destroy
+    end
+
+    it "should mark :ensure as :absent if the interface is destroyed" do
+        File.stubs(:unlink)
+        @provider.destroy
+        @provider.ensure.should == :absent
+    end
+
+    it "should mark :ensure as :present if the interface is being created" do
+        resource = stub 'resource', :name => 'testing'
+        resource.stubs(:should).with { |name| name == :ensure }.returns(:present)
+        resource.stubs(:should).with { |name| name != :ensure }.returns(nil)
+        @provider.resource = resource
+        @provider.create
+        @provider.ensure.should == :present
+    end
+
+    it "should write the generated text to disk when the interface is flushed" do
+        fh = mock("filehandle")
+        File.expects(:open).yields(fh)
+        fh.expects(:puts).with("generated")
+        resource = stub 'resource', :name => 'testing'
+        resource.stubs(:[]).with(:interface_desc).returns(nil)
+        resource.stubs(:should).with { |name| name == :ensure }.returns(:present)
+        resource.stubs(:should).with { |name| name != :ensure }.returns(nil)
+        @provider.resource = resource
+        @provider.create
+
+        @provider.stubs(:generate).returns("generated")
+        @provider.flush
+    end
+
+    it "should not write the generated text to disk when the interface is flushed if :ensure == :absent" do
+        @provider.ensure = :absent
+        @provider.flush
+    end
+end