diff --git a/t/Catmandu-Cmd-stream.t b/t/Catmandu-Cmd-stream.t
index 2983ec93c..6a5ff3d0d 100644
--- a/t/Catmandu-Cmd-stream.t
+++ b/t/Catmandu-Cmd-stream.t
@@ -6,6 +6,7 @@ use Test::More;
 use Test::Exception;
 use App::Cmd::Tester::CaptureExternal;
 use Cpanel::JSON::XS;
+use Path::Tiny;
 use utf8;
 
 my $pkg;
@@ -18,6 +19,8 @@ require_ok $pkg;
 
 use Catmandu::CLI;
 
+path("t/tmp/cmd-stream")->mkpath;
+
 note("download");
 {
     my $result = test_app(
@@ -35,7 +38,7 @@ note("upload");
 {
     my $result = test_app(
         qq|Catmandu::CLI| => [
-            qw(stream cpanfile to File::Simple --root t/data  --keysize 9 --bag 456 --id test.txt)
+            qw(stream cpanfile to File::Simple --root t/tmp/cmd-stream --keysize 9 --bag 456 --id test.txt)
         ]
     );
 
@@ -43,9 +46,11 @@ note("upload");
 
     is $result->error, undef, 'threw no exceptions';
 
-    ok -f "t/data/000/000/456/test.txt", "found the correct file";
+    ok -f "t/tmp/cmd-stream/000/000/456/test.txt", "found the correct file";
 
-    unlink "t/data/000/000/456/test.txt";
+    unlink "t/tmp/cmd-stream/000/000/456/test.txt";
 }
 
+path("t/tmp/cmd-stream")->remove_tree;
+
 done_testing;
diff --git a/t/Catmandu-Plugin-SideCar.t b/t/Catmandu-Plugin-SideCar.t
index 2b21f4617..31020980a 100644
--- a/t/Catmandu-Plugin-SideCar.t
+++ b/t/Catmandu-Plugin-SideCar.t
@@ -5,6 +5,7 @@ use warnings;
 use Test::More;
 use Test::Exception;
 use Catmandu;
+use Path::Tiny;
 use utf8;
 
 my $pkg;
@@ -15,11 +16,13 @@ BEGIN {
 }
 require_ok $pkg;
 
+path("t/tmp/sidecar")->mkpath;
+
 note("Combined Simple + Hash sidecar");
 {
     my $store = Catmandu->store(
         'File::Simple',
-        root    => 't/data3',
+        root    => 't/tmp/sidecar',
         keysize => 9,
         bags    => {
             index =>
@@ -33,33 +36,33 @@ note("Combined Simple + Hash sidecar");
     ok $index , 'got an index';
 
     note("...exists");
-    ok !$index->exists('1234');
+    ok !$index->exists('9012');
 
     note("...add");
-    ok $index->add({_id => 1234, foo => 'bar', test => [1, 2, 3]}),
-        'adding bag `1234`';
+    ok $index->add({_id => 9012, foo => 'bar', test => [1, 2, 3]}),
+        'adding bag `9012`';
 
-    ok -d "t/data3/000/001/234";
+    ok -d "t/tmp/sidecar/000/009/012";
 
     note("...get");
 
-    my $item = $index->get('1234');
+    my $item = $index->get('9012');
 
     ok $item;
 
-    is_deeply $item , {_id => 1234, foo => 'bar', test => [1, 2, 3]},
+    is_deeply $item , {_id => 9012, foo => 'bar', test => [1, 2, 3]},
         'found combined metadata and file data';
 
     note("...bag");
-    my $container = $store->bag('1234');
+    my $container = $store->bag('9012');
 
-    ok $container , 'got bag(1234)';
+    ok $container , 'got bag(9012)';
 
     note("...upload");
     ok $container->upload(IO::File->new('t/data2/000/000/001/test.txt'),
         'test1.txt');
 
-    ok -f 't/data3/000/001/234/test1.txt', 'test1.txt exists (2)';
+    ok -f 't/tmp/sidecar/000/009/012/test1.txt', 'test1.txt exists (2)';
 
     note("...list");
     my $array = [sort @{$container->map(sub {shift->{_id}})->to_array}];
@@ -91,8 +94,7 @@ note("Combined Simple + Hash sidecar");
 
     is_deeply $array , [], 'got correct response';
 
-    ok !-f 't/data/000/001/234/test1.txt',  'test1.txt doesnt exists (1)';
-    ok !-f 't/data3/000/001/234/test1.txt', 'test1.txt doesnt exists (2)';
+    ok !-f 't/tmp/sidecar/000/009/012/test1.txt', 'test1.txt doesnt exists (2)';
 
     note("...delete_all (index)");
     lives_ok {$index->delete_all()} 'delete_all';
@@ -111,7 +113,7 @@ note("Combined Hash + Simple sidecar");
                 plugins => [qw(SideCar)],
                 sidecar => {
                     package => "File::Simple",
-                    options => {'root' => 't/data3', 'keysize' => 9,}
+                    options => {'root' => 't/tmp/sidecar', 'keysize' => 9,}
                 },
                 sidecar_bag => 'index'
             }
@@ -120,22 +122,22 @@ note("Combined Hash + Simple sidecar");
 
     ok $store , 'got a store';
 
-    ok $store->bag->add({_id => '1234', name => 'patrick'}),
+    ok $store->bag->add({_id => '9012', name => 'patrick'}),
         'adding a record';
 
     note("...upload");
-    ok $store->bag->files('1234')
+    ok $store->bag->files('9012')
         ->upload(IO::File->new('t/data2/000/000/001/test.txt'), 'test1.txt');
 
-    ok -f 't/data3/000/001/234/test1.txt', 'test1.txt exists (2)';
+    ok -f 't/tmp/sidecar/000/009/012/test1.txt', 'test1.txt exists (2)';
 
     note("...get");
-    my $file = $store->bag->files('1234')->get("test1.txt");
+    my $file = $store->bag->files('9012')->get("test1.txt");
 
     ok $file;
 
     note("...stream");
-    my $str = $store->bag->files('1234')->as_string_utf8($file);
+    my $str = $store->bag->files('9012')->as_string_utf8($file);
 
     ok $str , 'can stream the data';
 
@@ -149,4 +151,6 @@ note("Combined Hash + Simple sidecar");
     is_deeply $array , [], 'got correct response';
 }
 
+path("t/tmp/sidecar")->remove_tree;
+
 done_testing;
diff --git a/t/Catmandu-Store-File-Memory-Bag.t b/t/Catmandu-Store-File-Memory-Bag.t
index 1df93ad1a..1e7a5f3b1 100644
--- a/t/Catmandu-Store-File-Memory-Bag.t
+++ b/t/Catmandu-Store-File-Memory-Bag.t
@@ -23,11 +23,11 @@ my $index = $store->bag;
 ok $store , 'got a store';
 ok $index , 'got an index';
 
-ok $index->add({_id => 1234}), 'adding bag `1234`';
+ok $index->add({_id => 8012}), 'adding bag `8012`';
 
-my $bag = $store->bag('1234');
+my $bag = $store->bag('8012');
 
-ok $bag , 'got bag(1234)';
+ok $bag , 'got bag(8012)';
 
 note("add");
 {
diff --git a/t/Catmandu-Store-File-Multi-Bag.t b/t/Catmandu-Store-File-Multi-Bag.t
index 8d4c59aea..da15a7f2a 100644
--- a/t/Catmandu-Store-File-Multi-Bag.t
+++ b/t/Catmandu-Store-File-Multi-Bag.t
@@ -5,6 +5,7 @@ use Test::More;
 use Test::Exception;
 use Catmandu::Store::File::Simple;
 use Catmandu::Store::File::Multi;
+use Path::Tiny;
 use utf8;
 
 my $pkg;
@@ -16,9 +17,12 @@ BEGIN {
 
 require_ok $pkg;
 
+path("t/tmp/multi-bag/a")->mkpath;
+path("t/tmp/multi-bag/b")->mkpath;
+
 my $stores = [
-    Catmandu::Store::File::Simple->new(root => 't/data',  keysize => 9),
-    Catmandu::Store::File::Simple->new(root => 't/data3', keysize => 9),
+    Catmandu::Store::File::Simple->new(root => 't/tmp/multi-bag/a',  keysize => 9),
+    Catmandu::Store::File::Simple->new(root => 't/tmp/multi-bag/b', keysize => 9),
 ];
 
 my $store = Catmandu::Store::File::Multi->new(stores => $stores);
@@ -27,11 +31,11 @@ my $index = $store->index;
 ok $store , 'got a store';
 ok $index , 'got an index';
 
-ok $index->add({_id => 1234}), 'adding bag `1234`';
+ok $index->add({_id => 7012}), 'adding bag `7012`';
 
-my $bag = $store->bag('1234');
+my $bag = $store->bag('7012');
 
-ok $bag , 'got bag(1234)';
+ok $bag , 'got bag(7012)';
 
 note("add");
 {
@@ -42,9 +46,9 @@ note("add");
 
     is $n1 , 16, '16 bytes';
 
-    ok -f 't/data/000/001/234/test1.txt', 'test1.txt exists';
+    ok -f 't/tmp/multi-bag/a/000/007/012/test1.txt', 'test1.txt exists';
 
-    ok -f 't/data3/000/001/234/test1.txt', 'test1.txt exists';
+    ok -f 't/tmp/multi-bag/b/000/007/012/test1.txt', 'test1.txt exists';
 
     my $n2 = $bag->upload(IO::File->new('t/data2/000/000/002/test.txt'),
         'test2.txt');
@@ -53,9 +57,9 @@ note("add");
 
     is $n2 , 6, '6 bytes';
 
-    ok -f 't/data/000/001/234/test2.txt', 'test2.txt exists';
+    ok -f 't/tmp/multi-bag/a/000/007/012/test2.txt', 'test2.txt exists';
 
-    ok -f 't/data3/000/001/234/test2.txt', 'test1.txt exists';
+    ok -f 't/tmp/multi-bag/b/000/007/012/test2.txt', 'test1.txt exists';
 
     my $n3 = $bag->upload(IO::File->new('t/data2/000/000/003/test.txt'),
         'test3.txt');
@@ -64,9 +68,9 @@ note("add");
 
     is $n3 , 6, '6 bytes';
 
-    ok -f 't/data/000/001/234/test3.txt', 'test3.txt exists';
+    ok -f 't/tmp/multi-bag/a/000/007/012/test3.txt', 'test3.txt exists';
 
-    ok -f 't/data3/000/001/234/test3.txt', 'test1.txt exists';
+    ok -f 't/tmp/multi-bag/b/000/007/012/test3.txt', 'test1.txt exists';
 
     my $data = {
         _id     => 'test4.txt',
@@ -131,4 +135,7 @@ note("...delete_all (index)");
     is_deeply $array , [], 'got correct response';
 }
 
+path("t/tmp/multi-bag/a")->remove_tree;
+path("t/tmp/multi-bag/b")->remove_tree;
+
 done_testing();
diff --git a/t/Catmandu-Store-File-Multi-Index.t b/t/Catmandu-Store-File-Multi-Index.t
index 14b385945..50021ad0b 100644
--- a/t/Catmandu-Store-File-Multi-Index.t
+++ b/t/Catmandu-Store-File-Multi-Index.t
@@ -5,6 +5,7 @@ use Test::More;
 use Test::Exception;
 use Catmandu::Store::File::Simple;
 use Catmandu::Store::File::Multi;
+use Path::Tiny;
 
 my $pkg;
 
@@ -57,9 +58,12 @@ note("get");
     }
 }
 
+path("t/tmp/multi-index/a")->mkpath;
+path("t/tmp/multi-index/b")->mkpath;
+
 $stores = [
-    Catmandu::Store::File::Simple->new(root => 't/data',  keysize => 9),
-    Catmandu::Store::File::Simple->new(root => 't/data3', keysize => 9),
+    Catmandu::Store::File::Simple->new(root => 't/tmp/multi-index/a',  keysize => 9),
+    Catmandu::Store::File::Simple->new(root => 't/tmp/multi-index/b', keysize => 9),
 ];
 
 $store = Catmandu::Store::File::Multi->new(stores => $stores);
@@ -78,14 +82,14 @@ note("add");
 
     ok $c , 'add(1234)';
 
-    ok -d "t/data/000/001/234", 'found a container on disk';
+    ok -d "t/tmp/multi-index/a/000/001/234", 'found a container on disk';
 }
 
 note("delete");
 {
     ok $index->delete('1234'), 'delete(1234)';
 
-    ok !-d "t/data/000/001/234", 'container on disk was deleted';
+    ok !-d "t/tmp/multi-index/a/000/001/234", 'container on disk was deleted';
 }
 
 note("delete_all");
@@ -93,4 +97,7 @@ note("delete_all");
     lives_ok {$index->delete_all()} 'delete_all';
 }
 
+path("t/tmp/multi-index/a")->remove_tree;
+path("t/tmp/multi-index/b")->remove_tree;
+
 done_testing();
diff --git a/t/Catmandu-Store-File-Multi.t b/t/Catmandu-Store-File-Multi.t
index 2c3ce9353..036b0690f 100644
--- a/t/Catmandu-Store-File-Multi.t
+++ b/t/Catmandu-Store-File-Multi.t
@@ -6,6 +6,7 @@ use Test::More;
 use Test::Exception;
 use Catmandu::Store::File::Simple;
 use Catmandu::Store::Hash;
+use Path::Tiny;
 use utf8;
 
 my $pkg;
@@ -16,11 +17,14 @@ BEGIN {
 }
 require_ok $pkg;
 
+path("t/tmp/multi/a")->mkpath;
+path("t/tmp/multi/b")->mkpath;
+
 note("Simple stores");
 {
     my $stores = [
-        Catmandu::Store::File::Simple->new(root => 't/data',  keysize => 9),
-        Catmandu::Store::File::Simple->new(root => 't/data3', keysize => 9),
+        Catmandu::Store::File::Simple->new(root => 't/tmp/multi/a',  keysize => 9),
+        Catmandu::Store::File::Simple->new(root => 't/tmp/multi/b', keysize => 9),
     ];
 
     my $store = $pkg->new(stores => $stores);
@@ -30,25 +34,25 @@ note("Simple stores");
     ok $index , 'got an index';
 
     note("...exists");
-    ok !$index->exists('1234');
+    ok !$index->exists('6012');
 
     note("...add");
-    ok $index->add({_id => 1234}), 'adding bag `1234`';
+    ok $index->add({_id => 6012}), 'adding bag `6012`';
 
-    ok -d "t/data/000/001/234";
-    ok -d "t/data3/000/001/234";
+    ok -d "t/tmp/multi/a/000/006/012";
+    ok -d "t/tmp/multi/b/000/006/012";
 
     note("...bag");
-    my $bag = $store->bag->files('1234');
+    my $bag = $store->bag->files('6012');
 
-    ok $bag , 'got bag(1234)';
+    ok $bag , 'got bag(6012)';
 
     note("...upload");
     ok $bag->upload(IO::File->new('t/data2/000/000/001/test.txt'),
         'test1.txt');
 
-    ok -f 't/data/000/001/234/test1.txt',  'test1.txt exists (1)';
-    ok -f 't/data3/000/001/234/test1.txt', 'test1.txt exists (2)';
+    ok -f 't/tmp/multi/a/000/006/012/test1.txt',  'test1.txt exists (1)';
+    ok -f 't/tmp/multi/b/000/006/012/test1.txt', 'test1.txt exists (2)';
 
     note("...list");
     my $array = [sort @{$bag->map(sub {shift->{_id}})->to_array}];
@@ -80,8 +84,8 @@ note("Simple stores");
 
     is_deeply $array , [], 'got correct response';
 
-    ok !-f 't/data/000/001/234/test1.txt',  'test1.txt doesnt exists (1)';
-    ok !-f 't/data3/000/001/234/test1.txt', 'test1.txt doesnt exists (2)';
+    ok !-f 't/tmp/multi/a/000/006/012/test1.txt',  'test1.txt doesnt exists (1)';
+    ok !-f 't/tmp/multi/b/000/006/012/test1.txt', 'test1.txt doesnt exists (2)';
 
     note("...delete_all (index)");
     lives_ok {$index->delete_all()} 'delete_all';
@@ -91,4 +95,7 @@ note("Simple stores");
     is_deeply $array , [], 'got correct response';
 }
 
+path("t/tmp/multi/a")->remove_tree;
+path("t/tmp/multi/b")->remove_tree;
+
 done_testing;
diff --git a/t/Catmandu-Store-File-Simple-Bag.t b/t/Catmandu-Store-File-Simple-Bag.t
index 186dc0b08..69a8ee793 100644
--- a/t/Catmandu-Store-File-Simple-Bag.t
+++ b/t/Catmandu-Store-File-Simple-Bag.t
@@ -5,6 +5,7 @@ use Test::More;
 use Test::Exception;
 use IO::String;
 use Catmandu::Store::File::Simple;
+use Path::Tiny;
 use utf8;
 
 my $pkg;
@@ -16,8 +17,10 @@ BEGIN {
 
 require_ok $pkg;
 
+path("t/tmp/file-simple-bag")->mkpath;
+
 my $store
-    = Catmandu::Store::File::Simple->new(root => 't/data', keysize => 9);
+    = Catmandu::Store::File::Simple->new(root => 't/tmp/file-simple-bag', keysize => 9);
 my $index = $store->bag;
 
 ok $store , 'got a store';
@@ -38,7 +41,7 @@ note("add");
 
     is $n1 , 16, '16 bytes';
 
-    ok -f 't/data/000/001/234/test1.txt', 'test1.txt exists';
+    ok -f 't/tmp/file-simple-bag/000/001/234/test1.txt', 'test1.txt exists';
 
     my $n2 = $bag->upload(IO::File->new('t/data2/000/000/002/test.txt'),
         'test2.txt');
@@ -47,7 +50,7 @@ note("add");
 
     is $n2 , 6, '6 bytes';
 
-    ok -f 't/data/000/001/234/test2.txt', 'test2.txt exists';
+    ok -f 't/tmp/file-simple-bag/000/001/234/test2.txt', 'test2.txt exists';
 
     my $n3 = $bag->upload(IO::File->new('t/data2/000/000/003/test.txt'),
         'test3.txt');
@@ -56,7 +59,7 @@ note("add");
 
     is $n3 , 6, '6 bytes';
 
-    ok -f 't/data/000/001/234/test3.txt', 'test3.txt exists';
+    ok -f 't/tmp/file-simple-bag/000/001/234/test3.txt', 'test3.txt exists';
 
     my $data = {
         _id     => 'test3.txt',
@@ -120,4 +123,6 @@ note("delete_all");
     is_deeply $array , [], 'got correct response';
 }
 
+path("t/tmp/file-simple-bag")->remove_tree;
+
 done_testing();
diff --git a/t/Catmandu-Store-File-Simple-Index.t b/t/Catmandu-Store-File-Simple-Index.t
index 2785fe3f9..c86e350cc 100644
--- a/t/Catmandu-Store-File-Simple-Index.t
+++ b/t/Catmandu-Store-File-Simple-Index.t
@@ -3,6 +3,7 @@ use strict;
 use warnings;
 use Test::More;
 use Test::Exception;
+use Path::Tiny;
 use Catmandu::Store::File::Simple;
 
 my $pkg;
@@ -54,7 +55,9 @@ note("get");
     }
 }
 
-$store = Catmandu::Store::File::Simple->new(root => 't/data', keysize => 9);
+path("t/tmp/file-simple-index")->mkpath;
+
+$store = Catmandu::Store::File::Simple->new(root => 't/tmp/file-simple-index', keysize => 9);
 $index = $store->bag();
 
 note("add");
@@ -70,14 +73,14 @@ note("add");
 
     ok $c , 'add(1234)';
 
-    ok -d "t/data/000/001/234", 'found a container on disk';
+    ok -d "t/tmp/file-simple-index/000/001/234", 'found a container on disk';
 }
 
 note("delete");
 {
     ok $index->delete('1234'), 'delete(1234)';
 
-    ok !-d "t/data/000/001/234", 'container on disk was deleted';
+    ok !-d "t/tmp/file-simple-index/000/001/234", 'container on disk was deleted';
 }
 
 note("delete_all");
@@ -85,4 +88,6 @@ note("delete_all");
     lives_ok {$index->delete_all()} 'delete_all';
 }
 
+path("t/tmp/file-simple-index")->remove_tree;
+
 done_testing();
diff --git a/t/data/.gitignore b/t/data/.gitignore
deleted file mode 100644
index e69de29bb..000000000
diff --git a/t/data3/.gitignore b/t/data3/.gitignore
deleted file mode 100644
index e69de29bb..000000000