test: add integration tests (#36)

tests/bind.rs

@@ -0,0 +1,80 @@
+mod fixtures;
+
+use fixtures::{port, server, tmpdir, Error, TestServer};
+
+use assert_cmd::prelude::*;
+use assert_fs::fixture::TempDir;
+use regex::Regex;
+use rstest::rstest;
+use std::io::{BufRead, BufReader};
+use std::process::{Command, Stdio};
+
+#[rstest]
+#[case(&["-b", "20.205.243.166"])]
+fn bind_fails(tmpdir: TempDir, port: u16, #[case] args: &[&str]) -> Result<(), Error> {
+    Command::cargo_bin("duf")?
+        .env("RUST_LOG", "false")
+        .arg(tmpdir.path())
+        .arg("-p")
+        .arg(port.to_string())
+        .args(args)
+        .assert()
+        .stderr(predicates::str::contains("creating server listener"))
+        .failure();
+
+    Ok(())
+}
+
+#[rstest]
+fn bind_ipv4(server: TestServer) -> Result<(), Error> {
+    assert!(reqwest::blocking::get(format!("http://127.0.0.1:{}", server.port()).as_str()).is_ok());
+    Ok(())
+}
+
+#[rstest]
+fn bind_ipv6(#[with(&["-b", "::"])] server: TestServer) -> Result<(), Error> {
+    assert_eq!(
+        reqwest::blocking::get(format!("http://127.0.0.1:{}", server.port()).as_str()).is_ok(),
+        !cfg!(windows)
+    );
+    assert!(reqwest::blocking::get(format!("http://[::1]:{}", server.port()).as_str()).is_ok());
+    Ok(())
+}
+
+#[rstest]
+#[case(&[] as &[&str])]
+#[case(&["--path-prefix", "/prefix"])]
+fn validate_printed_urls(tmpdir: TempDir, port: u16, #[case] args: &[&str]) -> Result<(), Error> {
+    let mut child = Command::cargo_bin("duf")?
+        .env("RUST_LOG", "false")
+        .arg(tmpdir.path())
+        .arg("-p")
+        .arg(port.to_string())
+        .args(args)
+        .stdout(Stdio::piped())
+        .spawn()?;
+
+    // WARN assumes urls list is terminated by an empty line
+    let url_lines = BufReader::new(child.stdout.take().unwrap())
+        .lines()
+        .map(|line| line.expect("Error reading stdout"))
+        .take_while(|line| !line.is_empty()) /* non-empty lines */
+        .collect::<Vec<_>>();
+    let url_lines = url_lines.join("\n");
+
+    let urls = Regex::new(r"http://[a-zA-Z0-9\.\[\]:/]+")
+        .unwrap()
+        .captures_iter(url_lines.as_str())
+        .map(|caps| caps.get(0).unwrap().as_str())
+        .collect::<Vec<_>>();
+
+    assert!(!urls.is_empty());
+
+    for url in urls {
+        reqwest::blocking::get(url)?.error_for_status()?;
+    }
+
+    child.kill()?;
+
+    Ok(())
+}