Replace rojo-test with regular tests folder again (#323)

* Replace rojo-test with regular tests folder again

* Bump MSRV to 1.43.1

rojo-test/src/util.rs

@@ -1,71 +0,0 @@
-use std::{
-    fs, io,
-    path::{Path, PathBuf},
-    process::Child,
-};
-
-use walkdir::WalkDir;
-
-pub fn get_rojo_path() -> PathBuf {
-    let working_dir = get_working_dir_path();
-
-    let mut exe_path = working_dir.join("target/debug/rojo");
-    if cfg!(windows) {
-        exe_path.set_extension("exe");
-    }
-
-    exe_path
-}
-
-pub fn get_working_dir_path() -> PathBuf {
-    let mut manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
-    assert!(
-        manifest_dir.pop(),
-        "Manifest directory did not have a parent"
-    );
-    manifest_dir
-}
-
-pub fn get_build_tests_path() -> PathBuf {
-    let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
-    manifest_dir.join("build-tests")
-}
-
-pub fn get_serve_tests_path() -> PathBuf {
-    let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
-    manifest_dir.join("serve-tests")
-}
-
-/// Recursively walk a directory and copy each item to the equivalent location
-/// in another directory. Equivalent to `cp -r src/* dst`
-pub fn copy_recursive(from: &Path, to: &Path) -> io::Result<()> {
-    for entry in WalkDir::new(from) {
-        let entry = entry?;
-        let path = entry.path();
-        let new_path = to.join(path.strip_prefix(from).unwrap());
-
-        let file_type = entry.file_type();
-
-        if file_type.is_dir() {
-            match fs::create_dir(new_path) {
-                Ok(_) => {}
-                Err(err) => match err.kind() {
-                    io::ErrorKind::AlreadyExists => {}
-                    _ => panic!(err),
-                },
-            }
-        } else {
-            fs::copy(path, new_path)?;
-        }
-    }
-
-    Ok(())
-}
-
-pub struct KillOnDrop(pub Child);
-
-impl Drop for KillOnDrop {
-    fn drop(&mut self) {
-        let _ = self.0.kill();
-    }
-}