Corrected some unit test warnings (#2242)

Signed-off-by: username-is-already-taken2 <gary.bright@niu-solutions.com>

test/helper.rb

@@ -179,6 +179,8 @@ class MockLoader
       '/etc/init/ssh.conf' => mockfile.call('upstart_ssh_enabled.conf'),
       '/etc/hosts.allow' => mockfile.call('hosts.allow'),
       '/etc/hosts.deny' => mockfile.call('hosts.deny'),
+      '/fakepath/fakefile' => emptyfile.call,
+      'C:/fakepath/fakefile' => emptyfile.call,
     }
 
     # create all mock commands
@@ -194,6 +196,18 @@ class MockLoader
     cmd_exit_1 = mock.mock_command('', '', '', 1)
 
     mock.commands = {
+      '' => empty.call,
+      'sh -c \'find /no/such/mock -type f -maxdepth 1\'' => empty.call,
+      'type "brew"' => empty.call,
+      'bash -c \'type "pip"\'' => empty.call,
+      'bash -c \'type "/test/path/pip"\'' => empty.call,
+      'type "netstat"' => empty.call,
+      'sh -c \'find /etc/apache2/ports.conf -type l -maxdepth 1\'' => empty.call,
+      'sh -c \'find /etc/httpd/conf.d/*.conf -type l -maxdepth 1\'' => empty.call,
+      'sh -c \'find /etc/httpd/mods-enabled/*.conf -type l -maxdepth 1\'' => empty.call,
+      'sh -c \'find /etc/httpd/conf-enabled/*.conf -type f -maxdepth 1\'' => empty.call,
+      'find /sys/class/net/eth1/ -maxdepth 1 -type f -exec sh -c \'echo "[$(basename {})]"; cat {} || echo -n\' \;' => empty.call,
+      'Get-Package -Name \'Not available\' | ConvertTo-Json' => empty.call,
       'ps axo pid,pcpu,pmem,vsz,rss,tty,stat,start,time,user,command' => cmd.call('ps-axo'),
       'ps axo label,pid,pcpu,pmem,vsz,rss,tty,stat,start,time,user:32,command' => cmd.call('ps-axoZ'),
       'ps -o pid,vsz,rss,tty,stat,time,ruser,args' => cmd.call('ps-busybox'),

test/unit/shell_detector_test.rb

@@ -41,7 +41,7 @@ describe Inspec::ShellDetector do
   # Small hack to ensure we can test on windows
   it "returns nil immediately if running on windows" do
     RbConfig::CONFIG.expects(:[]).with('host_os').returns('mswin')
-    subject.shell!.must_equal(nil)
+    subject.shell!.must_be_nil
   end
 
   describe "not on windows" do
@@ -72,7 +72,7 @@ describe Inspec::ShellDetector do
 
     it "returns nil if the shell isn't in the whitelist" do
       no_proc; with_ps(""); with_env("badshell"); with_pwuid("/usr/bin/badshell")
-      subject.shell!.must_equal(nil)
+      subject.shell!.must_be_nil
     end
   end
 end