test: add integration tests (#36)

tests/tls.rs

@@ -0,0 +1,51 @@
+mod fixtures;
+mod utils;
+
+use assert_cmd::Command;
+use fixtures::{server, Error, TestServer};
+use predicates::str::contains;
+use reqwest::blocking::ClientBuilder;
+use rstest::rstest;
+
+/// Can start the server with TLS and receive encrypted responses.
+#[rstest]
+#[case(server(&[
+        "--tls-cert", "tests/data/cert.pem",
+        "--tls-key", "tests/data/key_pkcs8.pem",
+]))]
+#[case(server(&[
+        "--tls-cert", "tests/data/cert.pem",
+        "--tls-key", "tests/data/key_pkcs1.pem",
+]))]
+fn tls_works(#[case] server: TestServer) -> Result<(), Error> {
+    let client = ClientBuilder::new()
+        .danger_accept_invalid_certs(true)
+        .build()?;
+    let resp = client.get(server.url()).send()?.error_for_status()?;
+    assert_index_resp!(resp);
+    Ok(())
+}
+
+/// Wrong path for cert throws error.
+#[rstest]
+fn wrong_path_cert() -> Result<(), Error> {
+    Command::cargo_bin("duf")?
+        .args(&["--tls-cert", "wrong", "--tls-key", "tests/data/key.pem"])
+        .assert()
+        .failure()
+        .stderr(contains("error: Failed to access `wrong`"));
+
+    Ok(())
+}
+
+/// Wrong paths for key throws errors.
+#[rstest]
+fn wrong_path_key() -> Result<(), Error> {
+    Command::cargo_bin("duf")?
+        .args(&["--tls-cert", "tests/data/cert.pem", "--tls-key", "wrong"])
+        .assert()
+        .failure()
+        .stderr(contains("error: Failed to access `wrong`"));
+
+    Ok(())
+}