Removes unnecessary cwd and pipeline from various tests (#9202)

# Description
<!--
Thank you for improving Nushell. Please, check our [contributing
guide](../CONTRIBUTING.md) and talk to the core team before making major
changes.

Description of your pull request goes here. **Provide examples and/or
screenshots** if your changes affect the user experience.
-->
Cleans up various tests that unnecessarily use the `cwd` argument of
`nu!`, and the `pipeline` function for single line commands. Also
replaces some unnecessary raw strings with normal strings. Part of
#8670.

# User-Facing Changes
<!-- List of all changes that impact the user experience here. This
helps us keep track of breaking changes. -->
None

# Tests + Formatting
<!--
Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect -A clippy::result_large_err` to check that
you're using the standard code style
- `cargo test --workspace` to check that all tests pass
- `cargo run -- crates/nu-std/tests/run.nu` to run the tests for the
standard library

> **Note**
> from `nushell` you can also use the `toolkit` as follows
> ```bash
> use toolkit.nu # or use an `env_change` hook to activate it
automatically
> toolkit check pr
> ```
-->
All checks pass

# After Submitting
<!-- If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.
-->

crates/nu-command/tests/commands/all.rs

@@ -4,8 +4,8 @@ use nu_test_support::{nu, pipeline};
 fn checks_all_rows_are_true() {
     let actual = nu!(pipeline(
         r#"
-                echo  [ "Andrés", "Andrés", "Andrés" ]
-                | all {|it| $it == "Andrés" }
+            echo  [ "Andrés", "Andrés", "Andrés" ]
+            | all {|it| $it == "Andrés" }
         "#
     ));
 
@@ -14,14 +14,14 @@ fn checks_all_rows_are_true() {
 
 #[test]
 fn checks_all_rows_are_false_with_param() {
-    let actual = nu!(r#" [1, 2, 3, 4] | all { |a| $a >= 5 } "#);
+    let actual = nu!(" [1, 2, 3, 4] | all { |a| $a >= 5 } ");
 
     assert_eq!(actual.out, "false");
 }
 
 #[test]
 fn checks_all_rows_are_true_with_param() {
-    let actual = nu!(r#" [1, 2, 3, 4] | all { |a| $a < 5 } "#);
+    let actual = nu!(" [1, 2, 3, 4] | all { |a| $a < 5 } ");
 
     assert_eq!(actual.out, "true");
 }
@@ -29,16 +29,16 @@ fn checks_all_rows_are_true_with_param() {
 #[test]
 fn checks_all_columns_of_a_table_is_true() {
     let actual = nu!(pipeline(
-        r#"
-                echo [
-                        [  first_name, last_name,   rusty_at, likes  ];
-                        [      Andrés,  Robalino, '10/11/2013',   1    ]
-                        [    JT,    Turner, '10/12/2013',   1    ]
-                        [      Darren, Schroeder, '10/11/2013',   1    ]
-                        [      Yehuda,      Katz, '10/11/2013',   1    ]
-                ]
-                | all {|x| $x.likes > 0 }
-        "#
+        "
+            echo [
+                    [  first_name, last_name,   rusty_at, likes  ];
+                    [      Andrés,  Robalino, '10/11/2013',   1    ]
+                    [    JT,    Turner, '10/12/2013',   1    ]
+                    [      Darren, Schroeder, '10/11/2013',   1    ]
+                    [      Yehuda,      Katz, '10/11/2013',   1    ]
+            ]
+            | all {|x| $x.likes > 0 }
+        "
     ));
 
     assert_eq!(actual.out, "true");
@@ -60,35 +60,35 @@ fn checks_if_all_returns_error_with_invalid_command() {
 
 #[test]
 fn works_with_1_param_blocks() {
-    let actual = nu!(r#"[1 2 3] | all {|e| print $e | true }"#);
+    let actual = nu!("[1 2 3] | all {|e| print $e | true }");
 
     assert_eq!(actual.out, "123true");
 }
 
 #[test]
 fn works_with_0_param_blocks() {
-    let actual = nu!(r#"[1 2 3] | all {|| print $in | true }"#);
+    let actual = nu!("[1 2 3] | all {|| print $in | true }");
 
     assert_eq!(actual.out, "123true");
 }
 
 #[test]
 fn early_exits_with_1_param_blocks() {
-    let actual = nu!(r#"[1 2 3] | all {|e| print $e | false }"#);
+    let actual = nu!("[1 2 3] | all {|e| print $e | false }");
 
     assert_eq!(actual.out, "1false");
 }
 
 #[test]
 fn early_exits_with_0_param_blocks() {
-    let actual = nu!(r#"[1 2 3] | all {|| print $in | false }"#);
+    let actual = nu!("[1 2 3] | all {|| print $in | false }");
 
     assert_eq!(actual.out, "1false");
 }
 
 #[test]
 fn all_uses_enumerate_index() {
-    let actual = nu!(r#"[7 8 9] | enumerate | all {|el| print $el.index | true }"#);
+    let actual = nu!("[7 8 9] | enumerate | all {|el| print $el.index | true }");
 
     assert_eq!(actual.out, "012true");
 }