1 files changed, 76 insertions, 0 deletions
diff --git a/crates/core/tedge_api/tests/derive_config.rs b/crates/core/tedge_api/tests/derive_config.rs
new file mode 100644
index 00000000..67d770a4
--- /dev/null
+++ b/crates/core/tedge_api/tests/derive_config.rs
@@ -0,0 +1,76 @@
+#![allow(unused, dead_code)]
+
+use pretty_assertions::assert_eq;
+use tedge_api::{
+    config::EnumVariantRepresentation, AsConfig, Config, ConfigDescription, ConfigKind,
+};
+
+/// Some Config
+#[derive(Debug, Config)]
+struct SimpleConfig {
+    ///  The port to connect to
+    port: Port,
+    name: String,
+    /// A nested configuration
+    ///
+    /// # This also includes markdown
+    ///
+    /// And can go over several _lines_
+    nested: NestedConfig,
+}
+
+#[derive(Debug, Config)]
+/// Nested configuration can have its own documentation
+struct NestedConfig {
+    num: EnumConfig,
+}
+
+#[derive(Debug, Config)]
+struct Port(u16);
+
+#[derive(Debug, Config)]
+#[config(tag = "type")]
+/// An enum configuration
+enum EnumConfig {
+    String(String),
+    Num(u64),
+    /// Some docs on the complex type
+    Complex {
+        /// The port of the inner complex type
+        port: Port,
+        other: String,
+    },
+}
+
+#[derive(Debug, Config)]
+#[config(untagged)]
+enum UntaggedEnumConfig {
+    One,
+    Two,
+}
+
+#[test]
+fn check_derive_config() {
+    let conf = SimpleConfig::as_config();
+
+    println!("{:#?}", conf);
+
+    assert!(matches!(conf.kind(), ConfigKind::Struct(_)));
+    assert_eq!(conf.doc().unwrap(), "Some Config");
+
+    assert_eq!(Port::as_config().doc(), None);
+
+    if let ConfigKind::Enum(_, variants) = EnumConfig::as_config().kind() {
+        if let EnumVariantRepresentation::Wrapped(kind) = &variants[2].2 {
+            if let ConfigKind::Struct(fields) = kind.kind() {
+                assert_eq!(fields[0].1, Some("The port of the inner complex type"))
+            } else {
+                panic!()
+            }
+        } else {
+            panic!()
+        }
+    } else {
+        panic!();
+    }
+}