Use TEST_TMPDIR in rmdir tests.

Library/Homebrew/cask/spec/cask/artifact/uninstall_spec.rb

@@ -271,15 +271,23 @@ describe Hbc::Artifact::Uninstall do
 
     context "when using rmdir" do
       let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-uninstall-rmdir.rb") }
-      let(:dir_pathname) { Pathname.new("#{TEST_FIXTURE_DIR}/cask/empty_directory") }
+      let(:empty_directory_path) { Pathname.new("#{TEST_TMPDIR}/empty_directory_path") }
+
+      before(:each) do
+        empty_directory_path.mkdir
+      end
+
+      after(:each) do
+        empty_directory_path.rmdir
+      end
 
       it "can uninstall" do
         Hbc::FakeSystemCommand.expects_command(
-          sudo(%w[/bin/rm -f --], dir_pathname.join(".DS_Store")),
+          sudo(%w[/bin/rm -f --], empty_directory_path/".DS_Store"),
         )
 
         Hbc::FakeSystemCommand.expects_command(
-          sudo(%w[/bin/rmdir --], dir_pathname),
+          sudo(%w[/bin/rmdir --], empty_directory_path),
         )
 
         subject

Library/Homebrew/cask/spec/cask/artifact/zap_spec.rb

@@ -272,15 +272,23 @@ describe Hbc::Artifact::Zap do
 
     context "when using rmdir" do
       let(:cask) { Hbc::CaskLoader.load_from_file(TEST_FIXTURE_DIR/"cask/Casks/with-zap-rmdir.rb") }
-      let(:dir_pathname) { Pathname.new("#{TEST_FIXTURE_DIR}/cask/empty_directory") }
+      let(:empty_directory_path) { Pathname.new("#{TEST_TMPDIR}/empty_directory_path") }
+
+      before(:each) do
+        empty_directory_path.mkdir
+      end
+
+      after(:each) do
+        empty_directory_path.rmdir
+      end
 
       it "can zap" do
         Hbc::FakeSystemCommand.expects_command(
-          sudo(%w[/bin/rm -f --], dir_pathname.join(".DS_Store")),
+          sudo(%w[/bin/rm -f --], empty_directory_path/".DS_Store"),
         )
 
         Hbc::FakeSystemCommand.expects_command(
-          sudo(%w[/bin/rmdir --], dir_pathname),
+          sudo(%w[/bin/rmdir --], empty_directory_path),
         )
 
         subject

Library/Homebrew/test/support/fixtures/cask/Casks/with-installable.rb

@@ -17,5 +17,5 @@ cask 'with-installable' do
                           'impermissible/relative/path',
                           '/another/impermissible/../relative/path',
                         ],
-            rmdir:      "#{TEST_FIXTURE_DIR}/cask/empty_directory"
+            rmdir:      "#{TEST_TMPDIR}/empty_directory_path"
 end

Library/Homebrew/test/support/fixtures/cask/Casks/with-uninstall-rmdir.rb

@@ -7,5 +7,5 @@ cask 'with-uninstall-rmdir' do
 
   pkg 'MyFancyPkg/Fancy.pkg'
 
-  uninstall rmdir: "#{TEST_FIXTURE_DIR}/cask/empty_directory"
+  uninstall rmdir: "#{TEST_TMPDIR}/empty_directory_path"
 end

Library/Homebrew/test/support/fixtures/cask/Casks/with-zap-rmdir.rb

@@ -7,5 +7,5 @@ cask 'with-zap-rmdir' do
 
   pkg 'MyFancyPkg/Fancy.pkg'
 
-  zap rmdir: "#{TEST_FIXTURE_DIR}/cask/empty_directory"
+  zap rmdir: "#{TEST_TMPDIR}/empty_directory_path"
 end