Add tests for static_files example.

examples/static_files/Cargo.toml

@@ -6,3 +6,6 @@ workspace = "../../"
 [dependencies]
 rocket = { path = "../../lib" }
 rocket_codegen = { path = "../../codegen" }
+
+[dev-dependencies]
+rocket = { path = "../../lib", features = ["testing"] }

examples/static_files/src/main.rs

@@ -3,6 +3,9 @@
 
 extern crate rocket;
 
+#[cfg(test)]
+mod tests;
+
 use std::io;
 use std::path::{Path, PathBuf};
 
@@ -18,6 +21,10 @@ fn files(file: PathBuf) -> Option<NamedFile> {
     NamedFile::open(Path::new("static/").join(file)).ok()
 }
 
-fn main() {
+fn rocket() -> rocket::Rocket {
-    rocket::ignite().mount("/", routes![index, files]).launch();
+    rocket::ignite().mount("/", routes![index, files])
+}
+
+fn main() {
+    rocket().launch();
 }

examples/static_files/src/tests.rs

@@ -0,0 +1,53 @@
+use std::fs::File;
+use std::io::Read;
+
+use rocket::testing::MockRequest;
+use rocket::http::Method::*;
+use rocket::http::Status;
+
+use super::rocket;
+
+fn test_query_file<T> (path: &str, file: T, status: Status)
+    where T: Into<Option<&'static str>>
+{
+    let rocket = rocket();
+    let mut req = MockRequest::new(Get, &path);
+
+    let mut response = req.dispatch_with(&rocket);
+    assert_eq!(response.status(), status);
+
+    let body_data = response.body().and_then(|body| body.into_bytes());
+    if let Some(filename) = file.into() {
+        let expected_data = read_file_content(filename);
+        assert!(body_data.map_or(false, |s| s == expected_data));
+    }
+}
+
+fn read_file_content(path: &str) -> Vec<u8> {
+    let mut fp = File::open(&path).expect(&format!("Can not open {}", path));
+    let mut file_content = vec![];
+
+    fp.read_to_end(&mut file_content).expect(&format!("Reading {} failed.", path));
+    file_content
+}
+
+#[test]
+fn test_index_html() {
+    test_query_file("/", "static/index.html", Status::Ok);
+}
+
+#[test]
+fn test_hidden_file() {
+    test_query_file("/hidden/hi.txt", "static/hidden/hi.txt", Status::Ok);
+}
+
+#[test]
+fn test_icon_file() {
+    test_query_file("/rocket-icon.jpg", "static/rocket-icon.jpg", Status::Ok);
+}
+
+#[test]
+fn test_invalid_path() {
+    test_query_file("/thou_shalt_not_exist", None, Status::NotFound);
+    test_query_file("/thou/shalt/not/exist", None, Status::NotFound);
+}