Double the speed of cargo test, actually run test

- Parallelize the slow tests if possible.
- `test_convert_ascii` was missing a `#[test]` annotation

fish-rust/src/tests/common.rs

@@ -1,4 +1,3 @@
-#[allow(unused_imports)]
 use crate::common::{scoped_push, ScopeGuard, ScopeGuarding};
 
 #[test]

fish-rust/src/tests/mod.rs

@@ -1,3 +1,5 @@
+#[cfg(test)]
 mod common;
 mod fd_monitor;
+#[cfg(test)]
 mod string_escape;

fish-rust/src/tests/string_escape.rs

@@ -1,11 +1,9 @@
-#![allow(unused_imports)]
 use crate::common::{
     escape_string, str2wcstring, unescape_string, wcs2string, EscapeFlags, EscapeStringStyle,
     UnescapeStringStyle, ENCODE_DIRECT_BASE, ENCODE_DIRECT_END,
 };
 use crate::wchar::{widestrs, wstr, WString};
 use crate::wutil::encoding::{wcrtomb, zero_mbstate, AT_LEAST_MB_LEN_MAX};
-use rand::SeedableRng;
 use rand::{Rng, RngCore};
 use rand_pcg::Pcg64Mcg;
 
@@ -99,9 +97,8 @@ fn test_escape_var() {
     }
 }
 
-#[widestrs]
-#[test]
-fn test_escape_random() {
+macro_rules! escape_test {
+    ($escape_style:expr, $unescape_style:expr) => {
         setlocale();
         let seed: u128 = 92348567983274852905629743984572;
         let mut rng = Pcg64Mcg::new(seed);
@@ -116,23 +113,37 @@ fn test_escape_random() {
                     .push(char::from_u32((rng.next_u32() % ESCAPE_TEST_CHAR as u32) + 1).unwrap());
             }
 
-        for (escape_style, unescape_style) in [
-            (EscapeStringStyle::default(), UnescapeStringStyle::default()),
-            (EscapeStringStyle::Var, UnescapeStringStyle::Var),
-            (EscapeStringStyle::Url, UnescapeStringStyle::Url),
-        ] {
-            escaped_string = escape_string(&random_string, escape_style);
-            let Some(unescaped_string) = unescape_string(&escaped_string, unescape_style) else {
+            escaped_string = escape_string(&random_string, $escape_style);
+            let Some(unescaped_string) = unescape_string(&escaped_string, $unescape_style) else {
                 let slice = escaped_string.as_char_slice();
-                panic!("Failed to unescape string {slice:?} using style {unescape_style:?}");
+                panic!("Failed to unescape string {slice:?}");
             };
-            assert_eq!(random_string, unescaped_string, "Escaped and then unescaped string {random_string:?}, but got back a different string {unescaped_string:?}. The intermediate escape looked like {escaped_string:?}. Using escape style {escape_style:?}");
-        }
+            assert_eq!(random_string, unescaped_string, "Escaped and then unescaped string {random_string:?}, but got back a different string {unescaped_string:?}. The intermediate escape looked like {escaped_string:?}.");
         }
+    };
+}
 
+#[test]
+fn test_escape_random_script() {
+    escape_test!(EscapeStringStyle::default(), UnescapeStringStyle::default());
+}
+
+#[test]
+fn test_escape_random_var() {
+    escape_test!(EscapeStringStyle::Var, UnescapeStringStyle::Var);
+}
+
+#[test]
+fn test_escape_random_url() {
+    escape_test!(EscapeStringStyle::Url, UnescapeStringStyle::Url);
+}
+
+#[widestrs]
+#[test]
+fn test_escape_no_printables() {
     // Verify that ESCAPE_NO_PRINTABLES also escapes backslashes so we don't regress on issue #3892.
-    random_string = "line 1\\n\nline 2"L.to_owned();
-    escaped_string = escape_string(
+    let random_string = "line 1\\n\nline 2"L.to_owned();
+    let escaped_string = escape_string(
         &random_string,
         EscapeStringStyle::Script(EscapeFlags::NO_PRINTABLES | EscapeFlags::NO_QUOTED),
     );
@@ -192,7 +203,8 @@ fn test_convert() {
 }
 
 /// Verify that ASCII narrow->wide conversions are correct.
-pub fn test_convert_ascii() {
+#[test]
+fn test_convert_ascii() {
     let mut s = vec![b'\0'; 4096];
     for (i, c) in s.iter_mut().enumerate() {
         *c = u8::try_from(i % 10).unwrap() + b'0';