Release v0.2.0: native GUI and managed KiCad libraries

tests/native_dialog.rs

@@ -0,0 +1,81 @@
+//! The native UI uses the installed binary and never needs a scripting runtime.
+use std::{
+    fs,
+    io::Write,
+    process::{Command, Stdio},
+};
+
+fn internal_dialog(request: &str) -> (std::process::Output, tempfile::TempDir) {
+    let temp = tempfile::tempdir().unwrap();
+    let mut child = Command::new(env!("CARGO_BIN_EXE_uniloader"))
+        .args([
+            "--config",
+            temp.path()
+                .join("must-not-be-created/config.toml")
+                .to_str()
+                .unwrap(),
+            "__dialog",
+        ])
+        .env("HOME", temp.path())
+        .env("XDG_CONFIG_HOME", temp.path().join("config"))
+        .env("XDG_DATA_HOME", temp.path().join("data"))
+        // The binary must not search PATH for an interpreter or companion helper.
+        .env("PATH", temp.path().join("empty-path"))
+        .env_remove("DISPLAY")
+        .env_remove("WAYLAND_DISPLAY")
+        .stdin(Stdio::piped())
+        .stdout(Stdio::piped())
+        .stderr(Stdio::piped())
+        .spawn()
+        .unwrap();
+    child
+        .stdin
+        .take()
+        .unwrap()
+        .write_all(request.as_bytes())
+        .unwrap();
+    (child.wait_with_output().unwrap(), temp)
+}
+
+#[test]
+fn no_display_is_pending_without_config_or_external_runtime() {
+    for request in [
+        r#"{"mode":"destination","projects":[],"component":"part"}"#,
+        r#"{"mode":"compare","incoming":"(footprint A)","candidates":[]}"#,
+        r#"{"mode":"file","title":"model","paths":["/a.step","/b.step"]}"#,
+    ] {
+        let (output, temp) = internal_dialog(request);
+        assert!(
+            output.status.success(),
+            "{}",
+            String::from_utf8_lossy(&output.stderr)
+        );
+        assert_eq!(
+            serde_json::from_slice::<serde_json::Value>(&output.stdout).unwrap(),
+            serde_json::Value::Null
+        );
+        assert_eq!(
+            fs::read_dir(temp.path()).unwrap().count(),
+            0,
+            "native helper must not load config or write state"
+        );
+    }
+}
+
+#[test]
+fn malformed_internal_request_is_rejected_without_writes() {
+    let (output, temp) = internal_dialog("{bad JSON");
+    assert!(!output.status.success());
+    assert!(String::from_utf8_lossy(&output.stderr).contains("invalid native dialog request"));
+    assert_eq!(fs::read_dir(temp.path()).unwrap().count(), 0);
+}
+
+#[test]
+fn internal_window_command_is_not_a_user_command() {
+    let output = Command::new(env!("CARGO_BIN_EXE_uniloader"))
+        .arg("--help")
+        .output()
+        .unwrap();
+    assert!(output.status.success());
+    assert!(!String::from_utf8_lossy(&output.stdout).contains("__dialog"));
+}