add porthole tests to meson

meson.build

@@ -22,6 +22,7 @@ gentoo_utils = static_library(
 
 if get_option('tests').enabled()
     rust.test('unittests', gentoo_utils)
+    subdir('tests')
 endif
 
 if get_option('fuzz').enabled()

tests/meson.build

@@ -1 +1,18 @@
-subdir('fuzz')
+tests = {}
+
+subdir('porthole')
+
+foreach test, test_args : tests
+    name = fs.name(test)
+
+    test(
+        f'test_@name@',
+        executable(
+            f'test_@name@',
+            test,
+            dependencies: [mon, itertools],
+            link_with: [gentoo_utils],
+        ),
+        args: test_args,
+    )
+endforeach

tests/porthole/meson.build

@@ -0,0 +1,5 @@
+tests += {
+    meson.current_source_dir() / 'porthole.rs': [
+        meson.current_source_dir() / 'porthole.txt',
+    ],
+}

tests/porthole/porthole.rs

@@ -1,4 +1,4 @@
-use std::cmp::Ordering;
+use std::{cmp::Ordering, env, fs};
 
 use gentoo_utils::{
     Parseable,
@@ -6,11 +6,6 @@ use gentoo_utils::{
 };
 use mon::{Parser, input::InputIter, tag};
 
-static PORTHOLE_TXT: &'static str = include_str!(concat!(
-    env!("CARGO_MANIFEST_DIR"),
-    "/testdata/porthole.txt"
-));
-
 enum Operator {
     Comment,
     Yes,
@@ -31,16 +26,21 @@ fn parse_operator<'a>() -> impl Parser<&'a str, Output = Operator> {
     comment.or(yes).or(no).or(eq).or(gt).or(lt)
 }
 
-#[test]
-fn test_porthole() {
-    for line in PORTHOLE_TXT.lines() {
+fn main() {
+    let path = env::args()
+        .nth(1)
+        .expect("pass path to porthole.txt as first parameter");
+
+    let porthole_txt = fs::read_to_string(&path).expect("failed to open porthole.txt");
+
+    for line in porthole_txt.lines() {
         if line.is_empty() {
             continue;
         }
 
         let operator = parse_operator()
             .parse_finished(InputIter::new(
-                line.split_ascii_whitespace().nth(0).unwrap(),
+                line.split_ascii_whitespace().next().unwrap(),
             ))
             .unwrap();