Add tests for sq key list.

- Add tests that check that `sq key list` returns an appropriate
    error code.

tests/integration.rs

@@ -8,15 +8,16 @@ mod integration {
     mod sq_cli_version;
     mod sq_decrypt;
     mod sq_encrypt;
-    mod sq_key_subkey_bind;
     mod sq_key_approvals_update;
     mod sq_key_delete;
     mod sq_key_expire;
     mod sq_key_generate;
     mod sq_key_import_export;
+    mod sq_key_list;
     mod sq_key_password;
     mod sq_key_revoke;
     mod sq_key_subkey;
+    mod sq_key_subkey_bind;
     mod sq_key_subkey_delete;
     mod sq_key_subkey_expire;
     mod sq_key_subkey_export;

tests/integration/common.rs

@@ -933,6 +933,26 @@ impl Sq {
         self.run(cmd, Some(true));
     }
 
+    /// Runs `sq key list` with the supplied arguments.
+    pub fn try_key_list(&self, args: &[&str]) -> Result<Vec<u8>> {
+        let mut cmd = self.command();
+        cmd.arg("key").arg("list");
+        for arg in args {
+            cmd.arg(arg);
+        }
+        let output = self.run(cmd, None);
+        if output.status.success() {
+            Ok(output.stdout)
+        } else {
+            Err(anyhow::anyhow!("sq cert list returned an error"))
+        }
+    }
+
+    /// Runs `sq key list` with the supplied arguments.
+    pub fn key_list(&self, args: &[&str]) -> Vec<u8> {
+        self.try_key_list(args).expect("success")
+    }
+
     /// Exports the specified key.
     pub fn key_export(&self, kh: KeyHandle) -> Cert {
         self.key_export_maybe(kh)

tests/integration/sq_key_list.rs

@@ -0,0 +1,29 @@
+use crate::integration::common::Sq;
+
+#[test]
+fn list_empty() {
+    let sq = Sq::new();
+
+    // Listing an empty key store should not be an error.
+    sq.key_list(&[]);
+
+    // Listing an empty key store with a pattern (that doesn't
+    // match anything) should be.
+    assert!(sq.try_key_list(&["not found"]).is_err());
+
+    let (cert, cert_path, _rev_path)
+        = sq.key_generate(&[], &[ "alice" ]);
+    sq.key_import(cert_path);
+
+    // Not linked => ok.
+    sq.key_list(&["alice"]);
+    // Not found => error.
+    assert!(sq.try_key_list(&["not found"]).is_err());
+
+    // Linked and found => ok.
+    sq.pki_link_add(&[], cert.key_handle(), &["alice"]);
+    sq.key_list(&["alice"]);
+
+    // Not found => error.
+    assert!(sq.try_key_list(&["not found"]).is_err());
+}