Change rojo-test to be macro-based

Cargo.lock

@@ -1541,6 +1541,7 @@ name = "rojo-test"
 version = "0.1.0"
 dependencies = [
  "insta 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "paste 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 

rojo-test/Cargo.toml

@@ -7,4 +7,5 @@ publish = false
 
 [dependencies]
 insta = "0.10.0"
+paste = "0.1.5"
 tempfile = "3.1.0"

rojo-test/src/build_test.rs

@@ -0,0 +1,53 @@
+use std::{
+    fs,
+    path::Path,
+    process::Command,
+};
+
+use insta::assert_snapshot_matches;
+use tempfile::tempdir;
+
+macro_rules! gen_build_tests {
+    ( $($test_name: ident,)* ) => {
+        $(
+            paste::item! {
+                #[test]
+                fn [<build_ $test_name>]() {
+                    run_build_test(stringify!($test_name));
+                }
+            }
+        )*
+    };
+}
+
+gen_build_tests! {
+    gitkeep,
+    txt_in_folder,
+}
+
+fn run_build_test(test_name: &str) {
+    let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
+    let build_test_path = manifest_dir.join("build-tests");
+    let working_dir = manifest_dir.parent().unwrap();
+
+    let output_dir = tempdir().expect("couldn't create temporary directory");
+
+    let input_path = build_test_path.join(test_name);
+    let output_path = output_dir.path().join(format!("{}.rbxmx", test_name));
+
+    let status = Command::new("cargo")
+        .args(&[
+            "run", "--quiet", "--",
+            "build", input_path.to_str().unwrap(), "-o", output_path.to_str().unwrap(),
+        ])
+        .current_dir(working_dir)
+        .status()
+        .expect("Couldn't start Rojo");
+
+    assert!(status.success(), "Rojo did not exit successfully");
+
+    let contents = fs::read_to_string(&output_path)
+        .expect("Couldn't read output file");
+
+    assert_snapshot_matches!(test_name, contents);
+}

rojo-test/src/lib.rs

@@ -1,43 +1,2 @@
-use std::{
+#[cfg(test)]
-    fs,
+mod build_test;
-    path::Path,
-    process::Command,
-};
-
-use insta::assert_snapshot_matches;
-use tempfile::tempdir;
-
-static BUILD_TESTS: &[&str] = &[
-    "gitkeep",
-    "txt_in_folder",
-];
-
-#[test]
-fn build_tests() {
-    let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
-    let build_test_path = manifest_dir.join("build-tests");
-    let working_dir = manifest_dir.parent().unwrap();
-
-    let output_dir = tempdir().expect("couldn't create temporary directory");
-
-    for &test_name in BUILD_TESTS {
-        let input_path = build_test_path.join(test_name);
-        let output_path = output_dir.path().join(format!("{}.rbxmx", test_name));
-
-        let status = Command::new("cargo")
-            .args(&[
-                "run", "--",
-                "build", input_path.to_str().unwrap(), "-o", output_path.to_str().unwrap(),
-            ])
-            .current_dir(working_dir)
-            .status()
-            .expect("Couldn't start Rojo");
-
-        assert!(status.success(), "Rojo did not exit successfully");
-
-        let contents = fs::read_to_string(&output_path)
-            .expect("Couldn't read output file");
-
-        assert_snapshot_matches!(format!("build_{}", test_name), contents);
-    }
-}

rojo-test/src/snapshots/build_test__gitkeep.snap

@@ -1,7 +1,7 @@
 ---
-created: "2019-08-08T00:40:36.892733600Z"
+created: "2019-08-08T00:48:33.382271800Z"
 creator: insta@0.10.0
-source: rojo-test/src/lib.rs
+source: rojo-test/src/build_test.rs
 expression: contents
 ---
 <roblox version="4">

rojo-test/src/snapshots/build_test__txt_in_folder.snap

@@ -1,7 +1,7 @@
 ---
-created: "2019-08-08T00:40:50.026718300Z"
+created: "2019-08-08T00:48:33.502257600Z"
 creator: insta@0.10.0
-source: rojo-test/src/lib.rs
+source: rojo-test/src/build_test.rs
 expression: contents
 ---
 <roblox version="4">