Clean up tests containing unnecessary cwd: tokens (#9692)

# Description
The working directory doesn't have to be set for those tests (or would
be the default anyways). When appropriate also remove calls to the
`pipeline()` function. In most places kept the diff minimal and only
removed the superfluous part to not pollute the blame view. With simpler
tests also simplified things to make them more readable overall (this
included removal of the raw string literal).

Work for #8670

crates/nu-command/tests/commands/random/bool.rs

@@ -1,13 +1,8 @@
-use nu_test_support::{nu, pipeline};
+use nu_test_support::nu;
 
 #[test]
 fn generates_a_bool() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random bool
-        "#
-    ));
+    let actual = nu!("random bool");
 
     let output = actual.out;
     let is_boolean_output = output == "true" || output == "false";

crates/nu-command/tests/commands/random/chars.rs

@@ -1,13 +1,10 @@
-use nu_test_support::{nu, pipeline};
+use nu_test_support::nu;
 
 #[test]
 fn generates_chars_of_specified_length() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
+    let actual = nu!(r#"
         random chars -l 15 | size | get chars
-        "#
-    ));
+        "#);
 
     let result = actual.out;
     assert_eq!(result, "15");

crates/nu-command/tests/commands/random/decimal.rs

@@ -1,37 +1,22 @@
-use nu_test_support::{nu, pipeline};
+use nu_test_support::nu;
 
 #[test]
 fn generates_a_decimal() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random decimal 42..43
-        "#
-    ));
+    let actual = nu!("random decimal 42..43");
 
     assert!(actual.out.contains("42") || actual.out.contains("43"));
 }
 
 #[test]
 fn generates_55() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random decimal 55..55
-        "#
-    ));
+    let actual = nu!("random decimal 55..55");
 
     assert!(actual.out.contains("55"));
 }
 
 #[test]
 fn generates_0() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random decimal ..<1
-        "#
-    ));
+    let actual = nu!(" random decimal ..<1 ");
 
     assert!(actual.out.contains('0'));
 }

crates/nu-command/tests/commands/random/dice.rs

@@ -1,13 +1,10 @@
-use nu_test_support::{nu, pipeline};
+use nu_test_support::nu;
 
 #[test]
 fn rolls_4_roll() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
+    let actual = nu!(r#"
         random dice -d 4 -s 10 | length
-        "#
-    ));
+        "#);
 
     assert_eq!(actual.out, "4");
 }

crates/nu-command/tests/commands/random/integer.rs

@@ -1,37 +1,22 @@
-use nu_test_support::{nu, pipeline};
+use nu_test_support::nu;
 
 #[test]
 fn generates_an_integer() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random integer 42..43
-        "#
-    ));
+    let actual = nu!("random integer 42..43");
 
     assert!(actual.out.contains("42") || actual.out.contains("43"));
 }
 
 #[test]
 fn generates_55() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random integer 55..55
-        "#
-    ));
+    let actual = nu!("random integer 55..55");
 
     assert!(actual.out.contains("55"));
 }
 
 #[test]
 fn generates_0() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random integer ..<1
-        "#
-    ));
+    let actual = nu!("random integer ..<1");
 
     assert!(actual.out.contains('0'));
 }

crates/nu-command/tests/commands/random/uuid.rs

@@ -3,12 +3,7 @@ use uuid_crate::Uuid;
 
 #[test]
 fn generates_valid_uuid4() {
-    let actual = nu!(
-        cwd: ".", pipeline(
-        r#"
-        random uuid
-        "#
-    ));
+    let actual = nu!("random uuid");
 
     let result = Uuid::parse_str(actual.out.as_str());