Add first set of integration tests

This change introduces the first set of integration-style test for the
application. Those tests may or may not connect to an actual Nitrokey
device (depending on what they test). We use the nitrokey-test crate's
test attribute macro to automatically dispatch tests to connected
devices or skip them if a required device is not present. It also
provides the means for automatically serializing tests.

1 files changed, 48 insertions, 0 deletions

diff --git a/nitrocli/src/tests/run.rs b/nitrocli/src/tests/run.rs
new file mode 100644
index 0000000..51c2b87
--- /dev/null
+++ b/nitrocli/src/tests/run.rs
@@ -0,0 +1,48 @@
+// run.rs
+
+// *************************************************************************
+// * Copyright (C) 2019 Daniel Mueller (deso@posteo.net)                   *
+// *                                                                       *
+// * This program is free software: you can redistribute it and/or modify  *
+// * it under the terms of the GNU General Public License as published by  *
+// * the Free Software Foundation, either version 3 of the License, or     *
+// * (at your option) any later version.                                   *
+// *                                                                       *
+// * This program is distributed in the hope that it will be useful,       *
+// * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+// * GNU General Public License for more details.                          *
+// *                                                                       *
+// * You should have received a copy of the GNU General Public License     *
+// * along with this program.  If not, see <http://www.gnu.org/licenses/>. *
+// *************************************************************************
+
+use super::*;
+use crate::tests::nitrocli;
+
+#[test]
+fn no_command_or_option() {
+  let (rc, out, err) = nitrocli::run(NO_DEV, &[]);
+
+  assert_ne!(rc, 0);
+  assert_eq!(out, b"");
+
+  let s = String::from_utf8_lossy(&err).into_owned();
+  assert!(s.starts_with("Usage:\n"), s);
+}
+
+#[test]
+fn help_option() {
+  fn test(opt: &'static str) {
+    let (rc, out, err) = nitrocli::run(NO_DEV, &[opt]);
+
+    assert_eq!(rc, 0);
+    assert_eq!(err, b"");
+
+    let s = String::from_utf8_lossy(&out).into_owned();
+    assert!(s.starts_with("Usage:\n"), s);
+  }
+
+  test("--help");
+  test("-h")
+}