diff --git a/tests/command_cd_tests.rs b/tests/command_cd_tests.rs
index 932484e593..216bcc8c80 100644
--- a/tests/command_cd_tests.rs
+++ b/tests/command_cd_tests.rs
@@ -1,10 +1,11 @@
 mod helpers;
 
-use helpers::in_directory as cwd;
-
 #[test]
 fn cd_directory_not_found() {
-    let actual = nu_error!(cwd("tests/fixtures"), "cd dir_that_does_not_exist");
+    let actual = nu_error!(
+    	cwd: "tests/fixtures",
+    	"cd dir_that_does_not_exist"
+    );
 
     assert!(actual.contains("dir_that_does_not_exist"));
     assert!(actual.contains("directory not found"));
diff --git a/tests/command_cp_tests.rs b/tests/command_cp_tests.rs
index e41c24d1ce..64e3a8510d 100644
--- a/tests/command_cp_tests.rs
+++ b/tests/command_cp_tests.rs
@@ -1,19 +1,20 @@
 mod helpers;
 
-use helpers::{in_directory as cwd, dir_exists_at, file_exists_at, files_exist_at, Playground, Stub::*};
 use nu::AbsoluteFile;
-use std::path::{Path, PathBuf};
+
+use helpers::{files_exist_at, Playground, Stub::*};
+use std::path::Path;
 
 #[test]
 fn copies_a_file() {
     Playground::setup("cp_test_1", |dirs, _| {
         nu!(
-            cwd(dirs.root()),
+            cwd: dirs.root(),
             "cp {} cp_test_1/sample.ini",
             dirs.formats().join("sample.ini")
         );
 
-        assert!(file_exists_at(dirs.test().join("sample.ini")));
+        assert!(dirs.test().join("sample.ini").exists());
     });
 }
 
@@ -23,19 +24,22 @@ fn copies_the_file_inside_directory_if_path_to_copy_is_directory() {
         let expected_file = AbsoluteFile::new(dirs.test().join("sample.ini"));
 
         nu!(
-            cwd(dirs.formats()),
+            cwd: dirs.formats(),
             "cp ../formats/sample.ini {}",
             expected_file.dir()
         );
 
-        assert!(file_exists_at(dirs.test().join("sample.ini")));
+        assert!(dirs.test().join("sample.ini").exists());
     })
 }
 
 #[test]
 fn error_if_attempting_to_copy_a_directory_to_another_directory() {
     Playground::setup("cp_test_3", |dirs, _| {
-        let actual = nu_error!(dirs.formats(), "cp ../formats {}", dirs.test());
+        let actual = nu_error!(
+            cwd: dirs.formats(),
+            "cp ../formats {}", dirs.test()
+        );
 
         assert!(actual.contains("../formats"));
         assert!(actual.contains("is a directory (not copied)"));
@@ -56,40 +60,25 @@ fn copies_the_directory_inside_directory_if_path_to_copy_is_directory_and_with_r
 
         let expected_dir = dirs.test().join("expected").join("originals");
 
-        nu!(cwd(dirs.test()), "cp originals expected --recursive");
+        nu!(
+            cwd: dirs.test(),
+            "cp originals expected --recursive"
+        );
 
-        assert!(dir_exists_at(PathBuf::from(&expected_dir)));
+        assert!(expected_dir.exists());
         assert!(files_exist_at(
             vec![
                 Path::new("yehuda.txt"),
                 Path::new("jonathan.txt"),
                 Path::new("andres.txt")
             ],
-            PathBuf::from(&expected_dir)
+            expected_dir
         ));
     })
 }
 
 #[test]
 fn deep_copies_with_recursive_flag() {
-    r#"
-    Given these files and directories
-        originals
-        originals/manifest.txt
-        originals/contributors
-        originals/contributors/yehuda.txt
-        originals/contributors/jonathan.txt
-        originals/contributors/andres.txt
-        originals/contributors/jonathan
-        originals/contributors/jonathan/errors.txt
-        originals/contributors/jonathan/multishells.txt
-        originals/contributors/andres
-        originals/contributors/andres/coverage.txt
-        originals/contributors/andres/commands.txt
-        originals/contributors/yehuda
-        originals/contributors/yehuda/defer-evaluation.txt
-    "#;
-
     Playground::setup("cp_test_5", |dirs, sandbox| {
         sandbox
             .within("originals")
@@ -114,20 +103,23 @@ fn deep_copies_with_recursive_flag() {
         let andres_expected_copied_dir = expected_dir.join("contributors").join("andres");
         let yehudas_expected_copied_dir = expected_dir.join("contributors").join("yehuda");
 
-        nu!(cwd(dirs.test()), "cp originals expected --recursive");
+        nu!(
+            cwd: dirs.test(), 
+            "cp originals expected --recursive"
+        );
 
-        assert!(dir_exists_at(PathBuf::from(&expected_dir)));
+        assert!(expected_dir.exists());
         assert!(files_exist_at(
             vec![Path::new("errors.txt"), Path::new("multishells.txt")],
-            PathBuf::from(&jonathans_expected_copied_dir)
+            jonathans_expected_copied_dir
         ));
         assert!(files_exist_at(
             vec![Path::new("coverage.txt"), Path::new("commands.txt")],
-            PathBuf::from(&andres_expected_copied_dir)
+            andres_expected_copied_dir
         ));
         assert!(files_exist_at(
             vec![Path::new("defer-evaluation.txt")],
-            PathBuf::from(&yehudas_expected_copied_dir)
+            yehudas_expected_copied_dir
         ));
     })
 }
@@ -135,7 +127,10 @@ fn deep_copies_with_recursive_flag() {
 #[test]
 fn copies_using_path_with_wildcard() {
     Playground::setup("cp_test_6", |dirs, _| {
-        nu!(cwd(dirs.formats()), "cp ../formats/* {}", dirs.test());
+        nu!(
+            cwd: dirs.formats(),
+            "cp ../formats/* {}", dirs.test()
+        );
 
         assert!(files_exist_at(
             vec![
@@ -154,7 +149,10 @@ fn copies_using_path_with_wildcard() {
 #[test]
 fn copies_using_a_glob() {
     Playground::setup("cp_test_7", |dirs, _| {
-        nu!(cwd(dirs.formats()), "cp * {}", dirs.test());
+        nu!(
+            cwd: dirs.formats(),
+            "cp * {}", dirs.test()
+        );
 
         assert!(files_exist_at(
             vec![
diff --git a/tests/command_enter_test.rs b/tests/command_enter_test.rs
index 61a7441dfe..fe22b56dbe 100644
--- a/tests/command_enter_test.rs
+++ b/tests/command_enter_test.rs
@@ -1,8 +1,9 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
-use std::path::{Path, PathBuf};
+use helpers::{Playground, Stub::*};
+
+use std::path::Path;
 
 #[test]
 fn knows_the_filesystems_entered() {
@@ -28,47 +29,47 @@ fn knows_the_filesystems_entered() {
         let expected_recycled = expected.join("recycled");
 
         nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             r#"
-            enter expected
-            mkdir recycled
-            enter ../red_pill
-            mv jonathan.nu ../expected
-            enter ../blue_pill
-            cp *.nxt ../expected/recycled
-            p
-            p
-            mv ../red_pill/yehuda.nu .
-            n
-            mv andres.nu ../expected/andres.nu
-            exit
-            cd ..
-            rm red_pill --recursive
-            exit
-            n
-            rm blue_pill --recursive
-            exit
-        "#
+                enter expected
+                mkdir recycled
+                enter ../red_pill
+                mv jonathan.nu ../expected
+                enter ../blue_pill
+                cp *.nxt ../expected/recycled
+                p
+                p
+                mv ../red_pill/yehuda.nu .
+                n
+                mv andres.nu ../expected/andres.nu
+                exit
+                cd ..
+                rm red_pill --recursive
+                exit
+                n
+                rm blue_pill --recursive
+                exit
+            "#
         );
 
-        assert!(!h::dir_exists_at(PathBuf::from(red_pill_dir)));
+        assert!(!red_pill_dir.exists());
         assert!(h::files_exist_at(
             vec![
                 Path::new("andres.nu"),
                 Path::new("jonathan.nu"),
                 Path::new("yehuda.nu"),
             ],
-            PathBuf::from(&expected)
+            expected
         ));
 
-        assert!(!h::dir_exists_at(PathBuf::from(blue_pill_dir)));
+        assert!(!blue_pill_dir.exists());
         assert!(h::files_exist_at(
             vec![
                 Path::new("bash.nxt"),
                 Path::new("korn.nxt"),
                 Path::new("powedsh.nxt"),
             ],
-            PathBuf::from(&expected_recycled)
+            expected_recycled
         ));
     })
 }
diff --git a/tests/command_ls_tests.rs b/tests/command_ls_tests.rs
index 0f1bc8b7d5..1e1e33e63e 100644
--- a/tests/command_ls_tests.rs
+++ b/tests/command_ls_tests.rs
@@ -1,7 +1,7 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
+use helpers::{Playground, Stub::*};
 
 #[test]
 fn ls_lists_regular_files() {
@@ -14,17 +14,17 @@ fn ls_lists_regular_files() {
         ]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
-                r#"
-                    ls 
-                    | get name 
-                    | lines 
-                    | split-column "." 
-                    | get Column2 
-                    | str --to-int 
-                    | sum 
-                    | echo $it
-                "#
+            cwd: dirs.test(), h::pipeline(
+            r#"
+                ls 
+                | get name 
+                | lines 
+                | split-column "." 
+                | get Column2 
+                | str --to-int 
+                | sum 
+                | echo $it
+            "#
         ));
 
         assert_eq!(actual, "30");
@@ -43,17 +43,17 @@ fn ls_lists_regular_files_using_asterisk_wildcard() {
         ]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
-                r#"
-                    ls *.txt 
-                    | get name 
-                    | lines 
-                    | split-column "." 
-                    | get Column2 
-                    | str --to-int 
-                    | sum 
-                    | echo $it
-                "#
+            cwd: dirs.test(), h::pipeline(
+            r#"
+                ls *.txt 
+                | get name 
+                | lines 
+                | split-column "." 
+                | get Column2 
+                | str --to-int 
+                | sum 
+                | echo $it
+            "#
         ));
 
         assert_eq!(actual, "3");
@@ -72,17 +72,17 @@ fn ls_lists_regular_files_using_question_mark_wildcard() {
         ]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
-                r#"
-                    ls *.??.txt 
-                    | get name 
-                    | lines 
-                    | split-column "." 
-                    | get Column2 
-                    | str --to-int 
-                    | sum 
-                    | echo $it
-                "#
+            cwd: dirs.test(), h::pipeline(
+            r#"
+                ls *.??.txt 
+                | get name 
+                | lines 
+                | split-column "." 
+                | get Column2 
+                | str --to-int 
+                | sum 
+                | echo $it
+            "#
         ));
 
         assert_eq!(actual, "30");
diff --git a/tests/command_mkdir_tests.rs b/tests/command_mkdir_tests.rs
index 192349ae03..40ad0a9ce7 100644
--- a/tests/command_mkdir_tests.rs
+++ b/tests/command_mkdir_tests.rs
@@ -1,24 +1,31 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground};
 use helpers as h;
-use std::path::{Path, PathBuf};
+use helpers::Playground;
+
+use std::path::Path;
 
 #[test]
 fn creates_directory() {
     Playground::setup("mkdir_test_1", |dirs, _| {
-        nu!(cwd(dirs.test()), "mkdir my_new_directory");
+        nu!(
+            cwd: dirs.test(),
+            "mkdir my_new_directory"
+        );
 
         let expected = dirs.test().join("my_new_directory");
 
-        assert!(h::dir_exists_at(expected));
+        assert!(expected.exists());
     })
 }
 
 #[test]
 fn accepts_and_creates_directories() {
     Playground::setup("mkdir_test_2", |dirs, _| {
-        nu!(cwd(dirs.test()), "mkdir dir_1 dir_2 dir_3");
+        nu!(
+            cwd: dirs.test(),
+            "mkdir dir_1 dir_2 dir_3"
+        );
 
         assert!(h::files_exist_at(
             vec![Path::new("dir_1"), Path::new("dir_2"), Path::new("dir_3")],
@@ -30,11 +37,13 @@ fn accepts_and_creates_directories() {
 #[test]
 fn creates_intermediary_directories() {
     Playground::setup("mkdir_test_3", |dirs, _| {
-        nu!(cwd(dirs.test()), "mkdir some_folder/another/deeper_one");
+        nu!(
+            cwd: dirs.test(),
+            "mkdir some_folder/another/deeper_one"
+        );
 
-        let mut expected = PathBuf::from(dirs.test());
-        expected.push("some_folder/another/deeper_one");
+        let expected = dirs.test().join("some_folder/another/deeper_one");
 
-        assert!(h::dir_exists_at(expected));
+        assert!(expected.exists());
     })
 }
diff --git a/tests/command_mv_tests.rs b/tests/command_mv_tests.rs
index 7fa70495ec..4972902a00 100644
--- a/tests/command_mv_tests.rs
+++ b/tests/command_mv_tests.rs
@@ -1,7 +1,7 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
+use helpers::{Playground, Stub::*};
 
 #[test]
 fn moves_a_file() {
@@ -13,10 +13,13 @@ fn moves_a_file() {
         let original = dirs.test().join("andres.txt");
         let expected = dirs.test().join("expected/yehuda.txt");
 
-        nu!(cwd(dirs.test()), "mv andres.txt expected/yehuda.txt");
+        nu!(
+            cwd: dirs.test(),
+            "mv andres.txt expected/yehuda.txt"
+        );
 
-        assert!(!h::file_exists_at(original));
-        assert!(h::file_exists_at(expected));
+        assert!(!original.exists());
+        assert!(expected.exists());
     })
 }
 
@@ -32,10 +35,13 @@ fn overwrites_if_moving_to_existing_file() {
         let original = dirs.test().join("andres.txt");
         let expected = dirs.test().join("jonathan.txt");
 
-        nu!(cwd(dirs.test()), "mv andres.txt jonathan.txt");
+        nu!(
+            cwd: dirs.test(),
+            "mv andres.txt jonathan.txt"
+        );
 
-        assert!(!h::file_exists_at(original));
-        assert!(h::file_exists_at(expected));
+        assert!(!original.exists());
+        assert!(expected.exists());
     })
 }
 
@@ -47,10 +53,13 @@ fn moves_a_directory() {
         let original_dir = dirs.test().join("empty_dir");
         let expected = dirs.test().join("renamed_dir");
 
-        nu!(cwd(dirs.test()), "mv empty_dir renamed_dir");
+        nu!(
+            cwd: dirs.test(),
+            "mv empty_dir renamed_dir"
+        );
 
-        assert!(!h::dir_exists_at(original_dir));
-        assert!(h::dir_exists_at(expected));
+        assert!(!original_dir.exists());
+        assert!(expected.exists());
     })
 }
 
@@ -64,10 +73,13 @@ fn moves_the_file_inside_directory_if_path_to_move_is_existing_directory() {
         let original_dir = dirs.test().join("jonathan.txt");
         let expected = dirs.test().join("expected/jonathan.txt");
 
-        nu!(dirs.test(), "mv jonathan.txt expected");
+        nu!(
+            cwd: dirs.test(),
+            "mv jonathan.txt expected"
+        );
 
-        assert!(!h::file_exists_at(original_dir));
-        assert!(h::file_exists_at(expected));
+        assert!(!original_dir.exists());
+        assert!(expected.exists());
     })
 }
 
@@ -82,10 +94,13 @@ fn moves_the_directory_inside_directory_if_path_to_move_is_existing_directory()
         let original_dir = dirs.test().join("contributors");
         let expected = dirs.test().join("expected/contributors");
 
-        nu!(dirs.test(), "mv contributors expected");
+        nu!(
+            cwd: dirs.test(),
+            "mv contributors expected"
+        );
 
-        assert!(!h::dir_exists_at(original_dir));
-        assert!(h::file_exists_at(expected));
+        assert!(!original_dir.exists());
+        assert!(expected.exists());
     })
 }
 
@@ -100,7 +115,7 @@ fn moves_the_directory_inside_directory_if_path_to_move_is_nonexistent_directory
         let original_dir = dirs.test().join("contributors");
 
         nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "mv contributors expected/this_dir_exists_now/los_tres_amigos"
         );
 
@@ -108,8 +123,8 @@ fn moves_the_directory_inside_directory_if_path_to_move_is_nonexistent_directory
             .test()
             .join("expected/this_dir_exists_now/los_tres_amigos");
 
-        assert!(!h::dir_exists_at(original_dir));
-        assert!(h::file_exists_at(expected));
+        assert!(!original_dir.exists());
+        assert!(expected.exists());
     })
 }
 
@@ -135,7 +150,10 @@ fn moves_using_path_with_wildcard() {
         let work_dir = dirs.test().join("work_dir");
         let expected = dirs.test().join("expected");
 
-        nu!(cwd(work_dir), "mv ../originals/*.ini ../expected");
+        nu!(
+            cwd: work_dir,
+            "mv ../originals/*.ini ../expected"
+        );
 
         assert!(h::files_exist_at(
             vec!["yehuda.ini", "jonathan.ini", "sample.ini", "andres.ini",],
@@ -161,9 +179,12 @@ fn moves_using_a_glob() {
         let work_dir = dirs.test().join("work_dir");
         let expected = dirs.test().join("expected");
 
-        nu!(cwd(work_dir), "mv ../meals/* ../expected");
+        nu!(
+            cwd: work_dir,
+            "mv ../meals/* ../expected"
+        );
 
-        assert!(h::dir_exists_at(meal_dir));
+        assert!(meal_dir.exists());
         assert!(h::files_exist_at(
             vec!["arepa.txt", "empanada.txt", "taquiza.txt",],
             expected
diff --git a/tests/command_open_tests.rs b/tests/command_open_tests.rs
index 4824936c21..a19873e7b3 100644
--- a/tests/command_open_tests.rs
+++ b/tests/command_open_tests.rs
@@ -1,7 +1,7 @@
 mod helpers;
 
-use helpers::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
+use helpers::{Playground, Stub::*};
 
 #[test]
 fn recognizes_csv() {
@@ -18,7 +18,7 @@ fn recognizes_csv() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open nu.zion.csv 
                 | where author == "Andres N. Robalino" 
@@ -34,7 +34,7 @@ fn recognizes_csv() {
 #[test]
 fn open_can_parse_bson_1() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open sample.bson | get root | nth 0 | get b | echo $it"
     );
 
@@ -44,16 +44,16 @@ fn open_can_parse_bson_1() {
 #[test]
 fn open_can_parse_bson_2() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
-            r#"
-                open sample.bson 
-                | get root 
-                | nth 6 
-                | get b 
-                | get '$binary_subtype' 
-                | echo $it
-            "#
-        ));
+        cwd: "tests/fixtures/formats", h::pipeline(
+        r#"
+            open sample.bson 
+            | get root 
+            | nth 6 
+            | get b 
+            | get '$binary_subtype' 
+            | echo $it
+        "#
+    ));
 
     assert_eq!(actual, "function");
 }
@@ -61,7 +61,7 @@ fn open_can_parse_bson_2() {
 #[test]
 fn open_can_parse_toml() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open cargo_sample.toml | get package.edition | echo $it"
     );
 
@@ -71,7 +71,7 @@ fn open_can_parse_toml() {
 #[test]
 fn open_can_parse_json() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
+        cwd: "tests/fixtures/formats", h::pipeline(
         r#"
             open sgml_description.json 
             | get glossary.GlossDiv.GlossList.GlossEntry.GlossSee 
@@ -85,7 +85,7 @@ fn open_can_parse_json() {
 #[test]
 fn open_can_parse_xml() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open jonathan.xml | get rss.channel.item.link | echo $it"
     );
 
@@ -98,7 +98,7 @@ fn open_can_parse_xml() {
 #[test]
 fn open_can_parse_ini() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open sample.ini | get SectionOne.integer | echo $it"
     );
 
@@ -108,7 +108,7 @@ fn open_can_parse_ini() {
 #[test]
 fn open_can_parse_utf16_ini() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open utf16.ini | get .ShellClassInfo | get IconIndex | echo $it"
     );
 
@@ -118,7 +118,7 @@ fn open_can_parse_utf16_ini() {
 #[test]
 fn errors_if_file_not_found() {
     let actual = nu_error!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open i_dont_exist.txt | echo $it"
     );
 
diff --git a/tests/command_rm_tests.rs b/tests/command_rm_tests.rs
index 2d5a90e8dd..568219e170 100644
--- a/tests/command_rm_tests.rs
+++ b/tests/command_rm_tests.rs
@@ -1,7 +1,7 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
+use helpers::{Playground, Stub::*};
 
 #[test]
 fn rm_removes_a_file() {
@@ -10,11 +10,14 @@ fn rm_removes_a_file() {
             .with_files(vec![EmptyFile("i_will_be_deleted.txt")
         ]);
 
-        nu!(cwd(dirs.root()), "rm rm_test_1/i_will_be_deleted.txt");
+        nu!(
+            cwd: dirs.root(),
+            "rm rm_test_1/i_will_be_deleted.txt"
+        );
 
         let path = dirs.test().join("i_will_be_deleted.txt");
 
-        assert!(!h::file_exists_at(path));
+        assert!(!path.exists());
     })
 }
 
@@ -38,7 +41,10 @@ fn rm_removes_files_with_wildcard() {
                 EmptyFile("baseline_parse_tokens.rs")
         ]);
 
-        nu!(cwd(dirs.test()), r#"rm "src/*/*/*.rs""#);
+        nu!(
+            cwd: dirs.test(),
+            r#"rm "src/*/*/*.rs""#
+        );
 
         assert!(!h::files_exist_at(
             vec![
@@ -76,7 +82,10 @@ fn rm_removes_deeply_nested_directories_with_wildcard_and_recursive_flag() {
                 EmptyFile("baseline_parse_tokens.rs")
         ]);
 
-        nu!(cwd(dirs.test()), "rm src/* --recursive");
+        nu!(
+            cwd: dirs.test(),
+            "rm src/* --recursive"
+        );
 
         assert!(!h::files_exist_at(
             vec!["src/parser/parse", "src/parser/hir"],
@@ -88,9 +97,12 @@ fn rm_removes_deeply_nested_directories_with_wildcard_and_recursive_flag() {
 #[test]
 fn rm_removes_directory_contents_without_recursive_flag_if_empty() {
     Playground::setup("rm_test_4", |dirs, _| {
-        nu!(cwd(dirs.root()), "rm rm_test_4");
+        nu!(
+            cwd: dirs.root(),
+            "rm rm_test_4"
+        );
 
-        assert!(!h::file_exists_at(dirs.test()));
+        assert!(!dirs.test().exists());
     })
 }
 
@@ -104,9 +116,12 @@ fn rm_removes_directory_contents_with_recursive_flag() {
                 EmptyFile("andres.txt")
         ]);
 
-        nu!(cwd(dirs.root()), "rm rm_test_5 --recursive");
+        nu!(
+            cwd: dirs.root(),
+            "rm rm_test_5 --recursive"
+        );
 
-        assert!(!h::file_exists_at(dirs.test()));
+        assert!(!dirs.test().exists());
     })
 }
 
@@ -118,11 +133,11 @@ fn rm_errors_if_attempting_to_delete_a_directory_with_content_without_recursive_
         ]);
 
         let actual = nu_error!(
-            cwd(dirs.root()),
+            cwd: dirs.root(),
             "rm rm_test_6"
         );
 
-        assert!(h::file_exists_at(dirs.test()));
+        assert!(dirs.test().exists());
         assert!(actual.contains("is a directory"));
     })
 }
@@ -130,7 +145,10 @@ fn rm_errors_if_attempting_to_delete_a_directory_with_content_without_recursive_
 #[test]
 fn rm_errors_if_attempting_to_delete_single_dot_as_argument() {
     Playground::setup("rm_test_7", |dirs, _| {
-        let actual = nu_error!(cwd(dirs.root()), "rm .");
+        let actual = nu_error!(
+            cwd: dirs.root(),
+            "rm ."
+        );
 
         assert!(actual.contains("may not be removed"));
     })
@@ -139,7 +157,10 @@ fn rm_errors_if_attempting_to_delete_single_dot_as_argument() {
 #[test]
 fn rm_errors_if_attempting_to_delete_two_dot_as_argument() {
     Playground::setup("rm_test_8", |dirs, _| {
-        let actual = nu_error!(cwd(dirs.root()), "rm ..");
+        let actual = nu_error!(
+            cwd: dirs.root(),
+            "rm .."
+        );
 
         assert!(actual.contains("may not be removed"));
     })
diff --git a/tests/commands_test.rs b/tests/commands_test.rs
index 6384581c91..30d283f50b 100644
--- a/tests/commands_test.rs
+++ b/tests/commands_test.rs
@@ -1,14 +1,24 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
+use helpers::{Playground, Stub::*};
 
 #[test]
 fn lines() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
-        r#"open cargo_sample.toml --raw | lines | skip-while $it != "[dependencies]" | skip 1 | first 1 | split-column "=" | get Column1 | trim | echo $it"#
-    );
+        cwd: "tests/fixtures/formats", h::pipeline(
+        r#"
+            open cargo_sample.toml --raw 
+            | lines 
+            | skip-while $it != "[dependencies]" 
+            | skip 1 
+            | first 1 
+            | split-column "=" 
+            | get Column1 
+            | trim 
+            | echo $it
+        "#
+    ));
 
     assert_eq!(actual, "rustyline");
 }
@@ -32,7 +42,7 @@ fn save_figures_out_intelligently_where_to_write_out_with_metadata() {
         let subject_file = dirs.test().join("cargo_sample.toml");
 
         nu!(
-            cwd(dirs.root()),
+            cwd: dirs.root(),
             "open save_test_1/cargo_sample.toml | inc package.version --minor | save"
         );
 
@@ -47,7 +57,7 @@ fn save_can_write_out_csv() {
         let expected_file = dirs.test().join("cargo_sample.csv");
 
         nu!(
-            dirs.root(),
+            cwd: dirs.root(),
             "open {}/cargo_sample.toml | inc package.version --minor | get package | save save_test_2/cargo_sample.csv",
             dirs.formats()
         );
diff --git a/tests/external_tests.rs b/tests/external_tests.rs
index 6e1d2eec78..7aabd592db 100644
--- a/tests/external_tests.rs
+++ b/tests/external_tests.rs
@@ -1,10 +1,11 @@
 mod helpers;
 
-use helpers::in_directory as cwd;
-
 #[test]
 fn external_command() {
-    let actual = nu!(cwd("tests/fixtures"), "echo 1");
+    let actual = nu!(
+    	cwd: "tests/fixtures",
+    	"echo 1"
+    );
 
     assert!(actual.contains("1"));
 }
diff --git a/tests/filter_inc_tests.rs b/tests/filter_inc_tests.rs
index 6ba98e5545..9ef0b311e6 100644
--- a/tests/filter_inc_tests.rs
+++ b/tests/filter_inc_tests.rs
@@ -1,12 +1,11 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground, Stub::*};
-use helpers as h;
+use helpers::{Playground, Stub::*};
 
 #[test]
 fn can_only_apply_one() {
     let actual = nu_error!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open cargo_sample.toml | first 1 | inc package.version --major --minor"
     );
 
@@ -26,7 +25,7 @@ fn by_one_with_field_passed() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | inc package.edition | get package.edition | echo $it"
         );
 
@@ -47,7 +46,7 @@ fn by_one_with_no_field_passed() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | get package.contributors | inc | echo $it"
         );
 
@@ -68,7 +67,7 @@ fn semversion_major_inc() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | inc package.version --major | get package.version | echo $it"
         );
 
@@ -89,7 +88,7 @@ fn semversion_minor_inc() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | inc package.version --minor | get package.version | echo $it"
         );
 
@@ -110,7 +109,7 @@ fn semversion_patch_inc() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | inc package.version --patch | get package.version | echo $it"
         );
 
@@ -131,7 +130,7 @@ fn semversion_without_passing_field() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | get package.version | inc --patch | echo $it"
         );
 
diff --git a/tests/filter_str_tests.rs b/tests/filter_str_tests.rs
index 7774f9dcf0..44a4b33913 100644
--- a/tests/filter_str_tests.rs
+++ b/tests/filter_str_tests.rs
@@ -1,12 +1,12 @@
 mod helpers;
 
-use h::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
+use h::{Playground, Stub::*};
 
 #[test]
 fn can_only_apply_one() {
     let actual = nu_error!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open caco3_plastics.csv | first 1 | str origin --downcase --upcase"
     );
 
@@ -28,7 +28,7 @@ fn acts_without_passing_field() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.yml | get environment.global.PROJECT_NAME | str --upcase | echo $it"
         );
 
@@ -49,7 +49,7 @@ fn downcases() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | str dependency.name --downcase | get dependency.name | echo $it"
         );
 
@@ -70,7 +70,7 @@ fn upcases() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open sample.toml | str package.name --upcase | get package.name | echo $it"
         );
     
@@ -81,15 +81,15 @@ fn upcases() {
 #[test]
 fn converts_to_int() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
-            r#"
-                open caco3_plastics.csv 
-                | first 1 
-                | str tariff_item --to-int 
-                | where tariff_item == 2509000000 
-                | get tariff_item 
-                | echo $it
-            "#
+        cwd: "tests/fixtures/formats", h::pipeline(
+        r#"
+            open caco3_plastics.csv 
+            | first 1 
+            | str tariff_item --to-int 
+            | where tariff_item == 2509000000 
+            | get tariff_item 
+            | echo $it
+        "#
     ));
 
     assert_eq!(actual, "2509000000");
@@ -108,7 +108,7 @@ fn replaces() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open sample.toml 
                 | str package.name --replace wykittenshell  
@@ -134,7 +134,7 @@ fn find_and_replaces() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open sample.toml 
                 | str fortune.teller.phone --find-replace KATZ "5289" 
@@ -160,7 +160,7 @@ fn find_and_replaces_without_passing_field() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open sample.toml 
                 | get fortune.teller.phone 
diff --git a/tests/filters_test.rs b/tests/filters_test.rs
index 842b0a5745..4258f7b109 100644
--- a/tests/filters_test.rs
+++ b/tests/filters_test.rs
@@ -1,12 +1,12 @@
 mod helpers;
 
-use helpers::{in_directory as cwd, Playground, Stub::*};
 use helpers as h;
+use helpers::{Playground, Stub::*};
 
 #[test]
 fn can_convert_table_to_csv_text_and_from_csv_text_back_into_table() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open caco3_plastics.csv | to-csv | from-csv | first 1 | get origin | echo $it"
     );
 
@@ -27,7 +27,7 @@ fn converts_structured_table_to_csv_text() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open csv_text_sample.txt 
                 | lines 
@@ -58,7 +58,7 @@ fn converts_structured_table_to_csv_text_skipping_headers_after_conversion() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open csv_text_sample.txt 
                 | lines 
@@ -88,7 +88,7 @@ fn converts_from_csv_text_to_structured_table() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open los_tres_amigos.txt 
                 | from-csv 
@@ -118,7 +118,7 @@ fn converts_from_csv_text_skipping_headers_to_structured_table() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open los_tres_amigos.txt 
                 | from-csv --headerless 
@@ -136,7 +136,7 @@ fn converts_from_csv_text_skipping_headers_to_structured_table() {
 #[test]
 fn can_convert_table_to_json_text_and_from_json_text_back_into_table() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
+        cwd: "tests/fixtures/formats", h::pipeline(
         r#"
             open sgml_description.json 
             | to-json 
@@ -168,7 +168,7 @@ fn converts_from_json_text_to_structured_table() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()),
+            cwd: dirs.test(),
             "open katz.txt | from-json | get katz | get rusty_luck | sum | echo $it"
         );
 
@@ -192,7 +192,7 @@ fn converts_from_json_text_recognizing_objects_independendtly_to_structured_tabl
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open katz.txt 
                 | from-json --objects 
@@ -219,7 +219,7 @@ fn converts_structured_table_to_json_text() {
         )]);
 
         let actual = nu!(
-            cwd(dirs.test()), h::pipeline(
+            cwd: dirs.test(), h::pipeline(
             r#"
                 open sample.txt 
                 | lines 
@@ -240,7 +240,7 @@ fn converts_structured_table_to_json_text() {
 #[test]
 fn can_convert_json_text_to_bson_and_back_into_table() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open sample.bson | to-bson | from-bson | get root | nth 1 | get b | echo $it"
     );
 
@@ -250,7 +250,7 @@ fn can_convert_json_text_to_bson_and_back_into_table() {
 #[test]
 fn can_convert_table_to_toml_text_and_from_toml_text_back_into_table() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open cargo_sample.toml | to-toml | from-toml | get package.name | echo $it"
     );
 
@@ -260,7 +260,7 @@ fn can_convert_table_to_toml_text_and_from_toml_text_back_into_table() {
 #[test]
 fn can_convert_table_to_yaml_text_and_from_yaml_text_back_into_table() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
+        cwd: "tests/fixtures/formats", h::pipeline(
         r#"
             open appveyor.yml 
             | to-yaml 
@@ -276,7 +276,7 @@ fn can_convert_table_to_yaml_text_and_from_yaml_text_back_into_table() {
 #[test]
 fn can_sort_by_column() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
+        cwd: "tests/fixtures/formats", h::pipeline(
         r#"
             open cargo_sample.toml --raw 
             | lines 
@@ -298,7 +298,7 @@ fn can_sort_by_column() {
 #[test]
 fn can_split_by_column() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
+        cwd: "tests/fixtures/formats", h::pipeline(
         r#"
             open cargo_sample.toml --raw 
             | lines 
@@ -317,7 +317,7 @@ fn can_split_by_column() {
 #[test]
 fn can_sum() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"), h::pipeline(
+        cwd: "tests/fixtures/formats", h::pipeline(
         r#"
             open sgml_description.json 
             | get glossary.GlossDiv.GlossList.GlossEntry.Sections 
@@ -332,7 +332,7 @@ fn can_sum() {
 #[test]
 fn can_filter_by_unit_size_comparison() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "ls | where size > 1kb | sort-by size | get name | skip 1 | trim | echo $it"
     );
 
@@ -342,7 +342,7 @@ fn can_filter_by_unit_size_comparison() {
 #[test]
 fn can_get_last() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "ls | sort-by name | last 1 | get name | trim | echo $it"
     );
 
@@ -352,7 +352,7 @@ fn can_get_last() {
 #[test]
 fn can_get_reverse_first() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "ls | sort-by name | reverse | first 1 | get name | trim | echo $it"
     );
 
diff --git a/tests/helpers/mod.rs b/tests/helpers/mod.rs
index e371b46ce7..538959e9ea 100644
--- a/tests/helpers/mod.rs
+++ b/tests/helpers/mod.rs
@@ -50,7 +50,7 @@ impl DisplayPath for nu::AbsolutePath {
 
 #[macro_export]
 macro_rules! nu {
-    ($cwd:expr, $path:expr, $($part:expr),*) => {{
+    (cwd: $cwd:expr, $path:expr, $($part:expr),*) => {{
         use $crate::helpers::DisplayPath;
 
         let path = format!($path, $(
@@ -60,6 +60,10 @@ macro_rules! nu {
         nu!($cwd, &path)
     }};
 
+    (cwd: $cwd:expr, $path:expr) => {{
+        nu!($cwd, $path)
+    }};
+
     ($cwd:expr, $path:expr) => {{
         pub use std::error::Error;
         pub use std::io::prelude::*;
@@ -101,7 +105,7 @@ macro_rules! nu {
 
 #[macro_export]
 macro_rules! nu_error {
-    ($cwd:expr, $path:expr, $($part:expr),*) => {{
+    (cwd: $cwd:expr, $path:expr, $($part:expr),*) => {{
         use $crate::helpers::DisplayPath;
 
         let path = format!($path, $(
@@ -111,17 +115,22 @@ macro_rules! nu_error {
         nu_error!($cwd, &path)
     }};
 
+    (cwd: $cwd:expr, $path:expr) => {{
+        nu_error!($cwd, $path)
+    }};
 
-    ($cwd:expr, $commands:expr) => {{
-        use std::io::prelude::*;
-        use std::process::{Command, Stdio};
+    ($cwd:expr, $path:expr) => {{
+        pub use std::error::Error;
+        pub use std::io::prelude::*;
+        pub use std::process::{Command, Stdio};
 
         let commands = &*format!(
             "
                             cd {}
                             {}
                             exit",
-            $crate::helpers::in_directory($cwd), $commands
+            $crate::helpers::in_directory($cwd),
+            $crate::helpers::DisplayPath::display_path(&$path)
         );
 
         let mut process = Command::new(helpers::executable_path())
@@ -140,7 +149,6 @@ macro_rules! nu_error {
             .expect("couldn't read from stderr");
 
         let out = String::from_utf8_lossy(&output.stderr);
-
         out.into_owned()
     }};
 }
@@ -345,14 +353,6 @@ pub fn files_exist_at(files: Vec<impl AsRef<Path>>, path: impl AsRef<Path>) -> b
     })
 }
 
-pub fn file_exists_at(path: impl AsRef<Path>) -> bool {
-    path.as_ref().exists()
-}
-
-pub fn dir_exists_at(path: impl AsRef<Path>) -> bool {
-    path.as_ref().exists()
-}
-
 pub fn delete_directory_at(full_path: &str) {
     std::fs::remove_dir_all(PathBuf::from(full_path)).expect("can not remove directory");
 }
diff --git a/tests/tests.rs b/tests/tests.rs
index f66ac0904b..e74db098d5 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -1,6 +1,5 @@
 mod helpers;
 
-use helpers::{in_directory as cwd};
 use helpers as h;
 
 #[test]
@@ -21,7 +20,7 @@ fn pipeline_helper() {
 #[test]
 fn external_num() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
+        cwd: "tests/fixtures/formats",
         "open sgml_description.json | get glossary.GlossDiv.GlossList.GlossEntry.Height | echo $it"
     );
 
@@ -30,7 +29,10 @@ fn external_num() {
 
 #[test]
 fn external_has_correct_quotes() {
-    let actual = nu!(cwd("."), r#"echo "hello world""#);
+    let actual = nu!(
+        cwd: ".", 
+        r#"echo "hello world""#
+    );
 
     let actual = h::normalize_string(&actual);
 
@@ -40,9 +42,14 @@ fn external_has_correct_quotes() {
 #[test]
 fn add_plugin() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
-        r#"open cargo_sample.toml | add dev-dependencies.newdep "1" | get dev-dependencies.newdep | echo $it"#
-    );
+        cwd: "tests/fixtures/formats", h::pipeline(
+        r#"
+            open cargo_sample.toml 
+            | add dev-dependencies.newdep "1" 
+            | get dev-dependencies.newdep 
+            | echo $it
+        "#
+    ));
 
     assert_eq!(actual, "1");
 }
@@ -50,9 +57,14 @@ fn add_plugin() {
 #[test]
 fn edit_plugin() {
     let actual = nu!(
-        cwd("tests/fixtures/formats"),
-        r#"open cargo_sample.toml | edit dev-dependencies.pretty_assertions "7" | get dev-dependencies.pretty_assertions | echo $it"#
-    );
+        cwd: "tests/fixtures/formats", h::pipeline(
+        r#"
+            open cargo_sample.toml 
+            | edit dev-dependencies.pretty_assertions "7" 
+            | get dev-dependencies.pretty_assertions 
+            | echo $it
+        "#
+    ));
 
     assert_eq!(actual, "7");
 }