diff --git a/spec/acceptance/backup_spec.rb b/spec/acceptance/backup_spec.rb
index e6bbd17..f021a55 100644
--- a/spec/acceptance/backup_spec.rb
+++ b/spec/acceptance/backup_spec.rb
@@ -1,104 +1,107 @@
 require 'spec_helper_acceptance'
 
 describe 'concat backup parameter' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   context '=> puppet' do
     before :all do
-      shell('rm -rf /tmp/concat')
-      shell('mkdir -p /tmp/concat')
-      shell("/bin/echo 'old contents' > /tmp/concat/file")
+      shell("rm -rf #{basedir}")
+      shell("mkdir -p #{basedir}")
+      shell("echo 'old contents' > #{basedir}/file")
     end
 
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         backup => 'puppet',
       }
       concat::fragment { 'new file':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => 'new contents',
       }
     EOS
 
     it 'applies the manifest twice with "Filebucketed" stdout and no stderr' do
       apply_manifest(pp, :catch_failures => true) do |r|
         expect(r.stderr).to eq("")
-        expect(r.stdout).to match(/Filebucketed \/tmp\/concat\/file to puppet with sum 0140c31db86293a1a1e080ce9b91305f/) # sum is for file contents of 'old contents'
+        expect(r.stdout).to match(/Filebucketed #{basedir}\/file to puppet with sum 0140c31db86293a1a1e080ce9b91305f/) # sum is for file contents of 'old contents'
       end
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should contain 'new contents' }
     end
   end
 
   context '=> .backup' do
     before :all do
-      shell('rm -rf /tmp/concat')
-      shell('mkdir -p /tmp/concat')
-      shell("/bin/echo 'old contents' > /tmp/concat/file")
+      shell("rm -rf #{basedir}")
+      shell("mkdir -p #{basedir}")
+      shell("echo 'old contents' > #{basedir}/file")
     end
 
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         backup => '.backup',
       }
       concat::fragment { 'new file':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => 'new contents',
       }
     EOS
 
     # XXX Puppet doesn't mention anything about filebucketing with a given
     # extension like .backup
     it 'applies the manifest twice  no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should contain 'new contents' }
     end
-    describe file('/tmp/concat/file.backup') do
+    describe file("#{basedir}/file.backup") do
       it { should be_file }
       it { should contain 'old contents' }
     end
   end
 
   # XXX The backup parameter uses validate_string() and thus can't be the
   # boolean false value, but the string 'false' has the same effect in Puppet 3
   context "=> 'false'" do
     before :all do
-      shell('rm -rf /tmp/concat')
-      shell('mkdir -p /tmp/concat')
-      shell("/bin/echo 'old contents' > /tmp/concat/file")
+      shell("rm -rf #{basedir}")
+      shell("mkdir -p #{basedir}")
+      shell("echo 'old contents' > #{basedir}/file")
     end
 
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         backup => '.backup',
       }
       concat::fragment { 'new file':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => 'new contents',
       }
     EOS
 
     it 'applies the manifest twice with no "Filebucketed" stdout and no stderr' do
       apply_manifest(pp, :catch_failures => true) do |r|
         expect(r.stderr).to eq("")
         expect(r.stdout).to_not match(/Filebucketed/)
       end
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should contain 'new contents' }
     end
   end
 end
diff --git a/spec/acceptance/concat_spec.rb b/spec/acceptance/concat_spec.rb
index 673d793..4480cb5 100644
--- a/spec/acceptance/concat_spec.rb
+++ b/spec/acceptance/concat_spec.rb
@@ -1,78 +1,81 @@
 require 'spec_helper_acceptance'
 
 case fact('osfamily')
 when 'AIX'
   username  = 'root'
   groupname = 'system'
 when 'windows'
   username  = 'Administrator'
   groupname = 'Administrators'
 else
   username  = 'root'
   groupname = 'root'
 end
 
 describe 'basic concat test' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
 
   shared_examples 'successfully_applied' do |pp|
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
   end
 
   context 'owner/group' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         owner => '#{username}',
         group => '#{groupname}',
         mode  => '0644',
       }
 
       concat::fragment { '1':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '1',
         order   => '01',
       }
 
       concat::fragment { '2':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '2',
         order   => '02',
       }
     EOS
 
     it_behaves_like 'successfully_applied', pp
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should be_owned_by username }
       it { should be_grouped_into groupname }
       # XXX file be_mode isn't supported on AIX
       it("should be mode 644", :unless => fact('osfamily') == "AIX") {
         should be_mode 644
       }
       it { should contain '1' }
       it { should contain '2' }
     end
-    describe file("#{default.puppet['vardir']}/concat/_tmp_concat_file/fragments/01_1") do
+    describe file("#{default.puppet['vardir']}/concat/#{basedir.gsub('/','_')}_file/fragments/01_1") do
       it { should be_file }
       it { should be_owned_by username }
       it { should be_grouped_into groupname }
       # XXX file be_mode isn't supported on AIX
       it("should be mode 644", :unless => fact('osfamily') == "AIX") {
         should be_mode 644
       }
     end
-    describe file("#{default.puppet['vardir']}/concat/_tmp_concat_file/fragments/02_2") do
+    describe file("#{default.puppet['vardir']}/concat/#{basedir.gsub('/','_')}_file/fragments/02_2") do
       it { should be_file }
       it { should be_owned_by username }
       it { should be_grouped_into groupname }
       # XXX file be_mode isn't supported on AIX
       it("should be mode 644", :unless => fact('osfamily') == "AIX") {
         should be_mode 644
       }
     end
   end
 end
diff --git a/spec/acceptance/empty_spec.rb b/spec/acceptance/empty_spec.rb
index f59916d..57970dd 100644
--- a/spec/acceptance/empty_spec.rb
+++ b/spec/acceptance/empty_spec.rb
@@ -1,23 +1,26 @@
 require 'spec_helper_acceptance'
 
 describe 'concat force empty parameter' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   context 'should run successfully' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         mode  => '0644',
         force => true,
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should_not contain '1\n2' }
     end
   end
 end
diff --git a/spec/acceptance/fragment_source_spec.rb b/spec/acceptance/fragment_source_spec.rb
index 6d3493b..0ec6d49 100644
--- a/spec/acceptance/fragment_source_spec.rb
+++ b/spec/acceptance/fragment_source_spec.rb
@@ -1,149 +1,152 @@
 require 'spec_helper_acceptance'
 
 case fact('osfamily')
 when 'AIX'
   username  = 'root'
   groupname = 'system'
 when 'windows'
   username  = 'Administrator'
   groupname = 'Administrators'
 else
   username  = 'root'
   groupname = 'root'
 end
 
 describe 'concat::fragment source' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   context 'should read file fragments from local system' do
     before(:all) do
-      shell("/bin/echo 'file1 contents' > /tmp/concat/file1")
-      shell("/bin/echo 'file2 contents' > /tmp/concat/file2")
+      shell("/bin/echo 'file1 contents' > #{basedir}/file1")
+      shell("/bin/echo 'file2 contents' > #{basedir}/file2")
     end
 
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/foo': }
+      concat { '#{basedir}/foo': }
 
       concat::fragment { '1':
-        target  => '/tmp/concat/foo',
-        source  => '/tmp/concat/file1',
+        target  => '#{basedir}/foo',
+        source  => '#{basedir}/file1',
       }
       concat::fragment { '2':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string1 contents',
       }
       concat::fragment { '3':
-        target  => '/tmp/concat/foo',
-        source  => '/tmp/concat/file2',
+        target  => '#{basedir}/foo',
+        source  => '#{basedir}/file2',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/foo') do
+    describe file("#{basedir}/foo") do
       it { should be_file }
       it { should contain 'file1 contents' }
       it { should contain 'string1 contents' }
       it { should contain 'file2 contents' }
     end
   end # should read file fragments from local system
 
   context 'should create files containing first match only.' do
     before(:all) do
-      shell('rm -rf /tmp/concat /var/lib/puppet/concat')
-      shell('mkdir -p /tmp/concat')
-      shell("/bin/echo 'file1 contents' > /tmp/concat/file1")
-      shell("/bin/echo 'file2 contents' > /tmp/concat/file2")
+      shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
+      shell("mkdir -p #{basedir}")
+      shell("echo 'file1 contents' > #{basedir}/file1")
+      shell("echo 'file2 contents' > #{basedir}/file2")
     end
 
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/result_file1':
+      concat { '#{basedir}/result_file1':
         owner   => '#{username}',
         group   => '#{groupname}',
         mode    => '0644',
       }
-      concat { '/tmp/concat/result_file2':
+      concat { '#{basedir}/result_file2':
         owner   => '#{username}',
         group   => '#{groupname}',
         mode    => '0644',
       }
-      concat { '/tmp/concat/result_file3':
+      concat { '#{basedir}/result_file3':
         owner   => '#{username}',
         group   => '#{groupname}',
         mode    => '0644',
       }
 
       concat::fragment { '1':
-        target  => '/tmp/concat/result_file1',
-        source => [ '/tmp/concat/file1', '/tmp/concat/file2' ],
+        target  => '#{basedir}/result_file1',
+        source => [ '#{basedir}/file1', '#{basedir}/file2' ],
         order   => '01',
       }
       concat::fragment { '2':
-        target  => '/tmp/concat/result_file2',
-        source => [ '/tmp/concat/file2', '/tmp/concat/file1' ],
+        target  => '#{basedir}/result_file2',
+        source => [ '#{basedir}/file2', '#{basedir}/file1' ],
         order   => '01',
       }
       concat::fragment { '3':
-        target  => '/tmp/concat/result_file3',
-        source => [ '/tmp/concat/file1', '/tmp/concat/file2' ],
+        target  => '#{basedir}/result_file3',
+        source => [ '#{basedir}/file1', '#{basedir}/file2' ],
         order   => '01',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
-    describe file('/tmp/concat/result_file1') do
+    describe file("#{basedir}/result_file1") do
       it { should be_file }
       it { should contain 'file1 contents' }
       it { should_not contain 'file2 contents' }
     end
-    describe file('/tmp/concat/result_file2') do
+    describe file("#{basedir}/result_file2") do
       it { should be_file }
       it { should contain 'file2 contents' }
       it { should_not contain 'file1 contents' }
     end
-    describe file('/tmp/concat/result_file3') do
+    describe file("#{basedir}/result_file3") do
       it { should be_file }
       it { should contain 'file1 contents' }
       it { should_not contain 'file2 contents' }
     end
   end
 
   context 'should fail if no match on source.' do
     before(:all) do
-      shell('rm -rf /tmp/concat /var/lib/puppet/concat')
-      shell('mkdir -p /tmp/concat')
-      shell('/bin/rm -rf /tmp/concat/fail_no_source /tmp/concat/nofilehere /tmp/concat/nothereeither')
+      shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
+      shell("mkdir -p #{basedir}")
+      shell("rm -rf #{basedir}/fail_no_source #{basedir}/nofilehere #{basedir}/nothereeither")
     end
 
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/fail_no_source':
+      concat { '#{basedir}/fail_no_source':
         owner   => '#{username}',
         group   => '#{groupname}',
         mode    => '0644',
       }
 
       concat::fragment { '1':
-        target  => '/tmp/concat/fail_no_source',
-        source => [ '/tmp/concat/nofilehere', '/tmp/concat/nothereeither' ],
+        target  => '#{basedir}/fail_no_source',
+        source => [ '#{basedir}/nofilehere', '#{basedir}/nothereeither' ],
         order   => '01',
       }
     EOS
 
     it 'applies the manifest with resource failures' do
       apply_manifest(pp, :expect_failures => true)
     end
-    describe file('/tmp/concat/fail_no_source') do
+    describe file("#{basedir}/fail_no_source") do
       #FIXME: Serverspec::Type::File doesn't support exists? for some reason. so... hack.
       it { should_not be_file }
       it { should_not be_directory }
     end
   end
 end
 
diff --git a/spec/acceptance/newline_spec.rb b/spec/acceptance/newline_spec.rb
index 92a78ad..9ecf26b 100644
--- a/spec/acceptance/newline_spec.rb
+++ b/spec/acceptance/newline_spec.rb
@@ -1,59 +1,62 @@
 require 'spec_helper_acceptance'
 
 describe 'concat ensure_newline parameter' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   context '=> false' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         ensure_newline => false,
       }
       concat::fragment { '1':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '1',
       }
       concat::fragment { '2':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '2',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should contain '12' }
     end
   end
 
   #context '=> true' do
   #  pp = <<-EOS
   #    include concat::setup
-  #    concat { '/tmp/concat/file':
+  #    concat { '#{basedir}/file':
   #      ensure_newline => true,
   #    }
   #    concat::fragment { '1':
-  #      target  => '/tmp/concat/file',
+  #      target  => '#{basedir}/file',
   #      content => '1',
   #    }
   #    concat::fragment { '2':
-  #      target  => '/tmp/concat/file',
+  #      target  => '#{basedir}/file',
   #      content => '2',
   #    }
   #  EOS
 
   #  it 'applies the manifest twice with no stderr' do
   #    expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
   #    expect(apply_manifest(pp, :catch_changes  => true).stderr).to eq("")
   #    #XXX ensure_newline => true causes changes on every run because the files
   #    #are modified in place.
   #  end
 
-  #  describe file('/tmp/concat/file') do
+  #  describe file("#{basedir}/file") do
   #    it { should be_file }
   #    it { should contain "1\n2\n" }
   #  end
   #end
 end
diff --git a/spec/acceptance/order_spec.rb b/spec/acceptance/order_spec.rb
index e148808..d01cae2 100644
--- a/spec/acceptance/order_spec.rb
+++ b/spec/acceptance/order_spec.rb
@@ -1,153 +1,159 @@
 require 'spec_helper_acceptance'
 
 describe 'concat order' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   before(:all) do
-    shell('rm -rf /tmp/concat /var/lib/puppet/concat')
-    shell('mkdir -p /tmp/concat')
+    shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
+    shell("mkdir -p #{basedir}")
   end
 
   context '=> alpha' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/foo':
+      concat { '#{basedir}/foo':
         order => 'alpha'
       }
       concat::fragment { '1':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string1',
       }
       concat::fragment { '2':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string2',
       }
       concat::fragment { '10':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string10',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/foo') do
+    describe file("#{basedir}/foo") do
       it { should be_file }
       #XXX Solaris 10 doesn't support multi-line grep
       it("should contain string10\nstring1\nsring2", :unless => fact('osfamily') == 'Solaris') {
         should contain "string10\nstring1\nsring2"
       }
     end
   end
 
   context '=> numeric' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/foo':
+      concat { '#{basedir}/foo':
         order => 'numeric'
       }
       concat::fragment { '1':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string1',
       }
       concat::fragment { '2':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string2',
       }
       concat::fragment { '10':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string10',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/foo') do
+    describe file("#{basedir}/foo") do
       it { should be_file }
       #XXX Solaris 10 doesn't support multi-line grep
       it("should contain string1\nstring2\nsring10", :unless => fact('osfamily') == 'Solaris') {
         should contain "string1\nstring2\nsring10"
       }
     end
   end
 end # concat order
 
 describe 'concat::fragment order' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   before(:all) do
-    shell('rm -rf /tmp/concat /var/lib/puppet/concat')
-    shell('mkdir -p /tmp/concat')
+    shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
+    shell("mkdir -p #{basedir}")
   end
 
   context '=> reverse order' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/foo': }
+      concat { '#{basedir}/foo': }
       concat::fragment { '1':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string1',
         order   => '15',
       }
       concat::fragment { '2':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string2',
         # default order 10
       }
       concat::fragment { '3':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string3',
         order   => '1',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/foo') do
+    describe file("#{basedir}/foo") do
       it { should be_file }
       #XXX Solaris 10 doesn't support multi-line grep
       it("should contain string3\nstring2\nsring1", :unless => fact('osfamily') == 'Solaris') {
         should contain "string3\nstring2\nsring1"
       }
     end
   end
 
   context '=> normal order' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/foo': }
+      concat { '#{basedir}/foo': }
       concat::fragment { '1':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string1',
         order   => '01',
       }
       concat::fragment { '2':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string2',
         order   => '02'
       }
       concat::fragment { '3':
-        target  => '/tmp/concat/foo',
+        target  => '#{basedir}/foo',
         content => 'string3',
         order   => '03',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/foo') do
+    describe file("#{basedir}/foo") do
       it { should be_file }
       #XXX Solaris 10 doesn't support multi-line grep
       it("should contain string1\nstring2\nsring3", :unless => fact('osfamily') == 'Solaris') {
         should contain "string1\nstring2\nsring3"
       }
     end
   end
 end # concat::fragment order
diff --git a/spec/acceptance/replace_spec.rb b/spec/acceptance/replace_spec.rb
index 99e9d48..1a468b7 100644
--- a/spec/acceptance/replace_spec.rb
+++ b/spec/acceptance/replace_spec.rb
@@ -1,248 +1,251 @@
 require 'spec_helper_acceptance'
 
 describe 'replacement of' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   context 'file' do
     context 'should not succeed' do
       before(:all) do
-        shell('mkdir -p /tmp/concat')
-        shell('echo "file exists" > /tmp/concat/file')
+        shell("mkdir -p #{basedir}")
+        shell('echo "file exists" > #{basedir}/file')
       end
       after(:all) do
-        shell('rm -rf /tmp/concat /var/lib/puppet/concat')
+        shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
       end
 
       pp = <<-EOS
         include concat::setup
-        concat { '/tmp/concat/file':
+        concat { '#{basedir}/file':
           replace => false,
         }
 
         concat::fragment { '1':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '1',
         }
 
         concat::fragment { '2':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '2',
         }
       EOS
 
       it 'applies the manifest twice with no stderr' do
         expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
         expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
       end
 
-      describe file('/tmp/concat/file') do
+      describe file("#{basedir}/file") do
         it { should be_file }
         it { should contain 'file exists' }
         it { should_not contain '1' }
         it { should_not contain '2' }
       end
     end
 
     context 'should succeed' do
       before(:all) do
-        shell('mkdir -p /tmp/concat')
-        shell('echo "file exists" > /tmp/concat/file')
+        shell("mkdir -p #{basedir}")
+        shell("echo "file exists" > #{basedir}/file")
       end
       after(:all) do
-        shell('rm -rf /tmp/concat /var/lib/puppet/concat')
+        shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
       end
 
       pp = <<-EOS
         include concat::setup
-        concat { '/tmp/concat/file':
+        concat { '#{basedir}/file':
           replace => true,
         }
 
         concat::fragment { '1':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '1',
         }
 
         concat::fragment { '2':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '2',
         }
       EOS
 
       it 'applies the manifest twice with no stderr' do
         expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
         expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
       end
 
-      describe file('/tmp/concat/file') do
+      describe file("#{basedir}/file") do
         it { should be_file }
         it { should_not contain 'file exists' }
         it { should contain '1' }
         it { should contain '2' }
       end
     end
   end # file
 
   context 'symlink' do
     context 'should not succeed' do
       # XXX the core puppet file type will replace a symlink with a plain file
       # when using ensure => present and source => ... but it will not when using
       # ensure => present and content => ...; this is somewhat confusing behavior
       before(:all) do
-        shell('mkdir -p /tmp/concat')
-        shell('ln -s /tmp/concat/dangling /tmp/concat/file')
+        shell("mkdir -p #{basedir}")
+        shell("ln -s #{basedir}/dangling #{basedir}/file")
       end
       after(:all) do
-        shell('rm -rf /tmp/concat /var/lib/puppet/concat')
+        shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
       end
 
       pp = <<-EOS
         include concat::setup
-        concat { '/tmp/concat/file':
+        concat { '#{basedir}/file':
           replace => false,
         }
 
         concat::fragment { '1':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '1',
         }
 
         concat::fragment { '2':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '2',
         }
       EOS
 
       it 'applies the manifest twice with no stderr' do
         expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
         expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
       end
 
       # XXX specinfra doesn't support be_linked_to on AIX
-      describe file('/tmp/concat/file'), :unless => fact('osfamily') == "AIX" do
-        it { should be_linked_to '/tmp/concat/dangling' }
+      describe file("#{basedir}/file"), :unless => fact("osfamily") == "AIX" do
+        it { should be_linked_to "#{basedir}/dangling" }
       end
 
-      describe file('/tmp/concat/dangling') do
+      describe file("#{basedir}/dangling") do
         # XXX serverspec does not have a matcher for 'exists'
         it { should_not be_file }
         it { should_not be_directory }
       end
     end
 
     context 'should succeed' do
       # XXX the core puppet file type will replace a symlink with a plain file
       # when using ensure => present and source => ... but it will not when using
       # ensure => present and content => ...; this is somewhat confusing behavior
       before(:all) do
-        shell('mkdir -p /tmp/concat')
-        shell('ln -s /tmp/concat/dangling /tmp/concat/file')
+        shell("mkdir -p #{basedir}")
+        shell("ln -s #{basedir}/dangling #{basedir}/file")
       end
       after(:all) do
-        shell('rm -rf /tmp/concat /var/lib/puppet/concat')
+        shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
       end
 
       pp = <<-EOS
         include concat::setup
-        concat { '/tmp/concat/file':
+        concat { '#{basedir}/file':
           replace => true,
         }
 
         concat::fragment { '1':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '1',
         }
 
         concat::fragment { '2':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '2',
         }
       EOS
 
       it 'applies the manifest twice with no stderr' do
         expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
         expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
       end
 
-      describe file('/tmp/concat/file') do
+      describe file("#{basedir}/file") do
         it { should be_file }
         it { should contain '1' }
         it { should contain '2' }
       end
     end
   end # symlink
 
   context 'directory' do
     context 'should not succeed' do
       before(:all) do
-        shell('mkdir -p /tmp/concat/file')
+        shell("mkdir -p #{basedir}/file")
       end
       after(:all) do
-        shell('rm -rf /tmp/concat /var/lib/puppet/concat')
+        shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
       end
 
       pp = <<-EOS
         include concat::setup
-        concat { '/tmp/concat/file': }
+        concat { '#{basedir}/file': }
 
         concat::fragment { '1':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '1',
         }
 
         concat::fragment { '2':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '2',
         }
       EOS
 
       it 'applies the manifest twice with stderr for changing to file' do
         expect(apply_manifest(pp, :expect_failures => true).stderr).to match(/change from directory to file failed/)
         expect(apply_manifest(pp, :expect_failures => true).stderr).to match(/change from directory to file failed/)
       end
 
-      describe file('/tmp/concat/file') do
+      describe file("#{basedir}/file") do
         it { should be_directory }
       end
     end
 
     # XXX concat's force param currently enables the creation of empty files
     # when there are no fragments, and the replace param will only replace
     # files and symlinks, not directories.  The semantics either need to be
     # changed, extended, or a new param introduced to control directory
     # replacement.
     context 'should succeed', :pending => 'not yet implemented' do
       before(:all) do
-        shell('mkdir -p /tmp/concat/file')
+        shell("mkdir -p #{basedir}/file")
       end
       after(:all) do
-        shell('rm -rf /tmp/concat /var/lib/puppet/concat')
+        shell("rm -rf #{basedir} #{default.puppet['vardir']}/concat")
       end
 
       pp = <<-EOS
         include concat::setup
-        concat { '/tmp/concat/file':
+        concat { '#{basedir}/file':
           force => true,
         }
 
         concat::fragment { '1':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '1',
         }
 
         concat::fragment { '2':
-          target  => '/tmp/concat/file',
+          target  => '#{basedir}/file',
           content => '2',
         }
       EOS
 
       it 'applies the manifest twice with no stderr' do
         expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
         expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
       end
 
-      describe file('/tmp/concat/file') do
+      describe file("#{basedir}/file") do
         it { should be_file }
         it { should contain '1' }
       end
     end
   end # directory
 end
diff --git a/spec/acceptance/symbolic_name_spec.rb b/spec/acceptance/symbolic_name_spec.rb
index b1b512f..8481768 100644
--- a/spec/acceptance/symbolic_name_spec.rb
+++ b/spec/acceptance/symbolic_name_spec.rb
@@ -1,33 +1,36 @@
 require 'spec_helper_acceptance'
 
 describe 'symbolic name' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   pp = <<-EOS
     include concat::setup
     concat { 'not_abs_path':
-      path => '/tmp/concat/file',
+      path => '#{basedir}/file',
     }
 
     concat::fragment { '1':
       target  => 'not_abs_path',
       content => '1',
       order   => '01',
     }
 
     concat::fragment { '2':
       target  => 'not_abs_path',
       content => '2',
       order   => '02',
     }
   EOS
 
   it 'applies the manifest twice with no stderr' do
     expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
     expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
   end
 
-  describe file('/tmp/concat/file') do
+  describe file("#{basedir}/file") do
     it { should be_file }
     it { should contain '1' }
     it { should contain '2' }
   end
 end
diff --git a/spec/acceptance/warn_spec.rb b/spec/acceptance/warn_spec.rb
index e19c6b5..16947ee 100644
--- a/spec/acceptance/warn_spec.rb
+++ b/spec/acceptance/warn_spec.rb
@@ -1,100 +1,103 @@
 require 'spec_helper_acceptance'
 
 describe 'concat warn =>' do
+  let :basedir do
+    default.tmpdir('concat')
+  end
   context 'true should enable default warning message' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         warn  => true,
       }
 
       concat::fragment { '1':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '1',
         order   => '01',
       }
 
       concat::fragment { '2':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '2',
         order   => '02',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should contain '# This file is managed by Puppet. DO NOT EDIT.' }
       it { should contain '1' }
       it { should contain '2' }
     end
   end
   context 'false should not enable default warning message' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         warn  => false,
       }
 
       concat::fragment { '1':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '1',
         order   => '01',
       }
 
       concat::fragment { '2':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '2',
         order   => '02',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should_not contain '# This file is managed by Puppet. DO NOT EDIT.' }
       it { should contain '1' }
       it { should contain '2' }
     end
   end
   context '# foo should overide default warning message' do
     pp = <<-EOS
       include concat::setup
-      concat { '/tmp/concat/file':
+      concat { '#{basedir}/file':
         warn  => '# foo',
       }
 
       concat::fragment { '1':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '1',
         order   => '01',
       }
 
       concat::fragment { '2':
-        target  => '/tmp/concat/file',
+        target  => '#{basedir}/file',
         content => '2',
         order   => '02',
       }
     EOS
 
     it 'applies the manifest twice with no stderr' do
       expect(apply_manifest(pp, :catch_failures => true).stderr).to eq("")
       expect(apply_manifest(pp, :catch_changes => true).stderr).to eq("")
     end
 
-    describe file('/tmp/concat/file') do
+    describe file("#{basedir}/file") do
       it { should be_file }
       it { should contain '# foo' }
       it { should contain '1' }
       it { should contain '2' }
     end
   end
 end