From d52adb4cfa059b28abb9bf91aa420960b2de8d96 Mon Sep 17 00:00:00 2001
From: Santiago <santiago@carmuega.me>
Date: Mon, 22 Jun 2026 16:53:09 -0300
Subject: [PATCH] test(invoke): cover arg encoding through the invoke glue
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Add a smoke test over cshell's own invoke path —
`prepare_invocation` → `load_args` → `into_resolve_request` — on the
`05-invoke` arg surface: a record `meta` nesting a `List<Int>` plus Int/
Bool/Bytes scalars. Asserts the record serializes to the tagged wire
form (fields positional in declared order) and scalars stay bare.

The SDK already covers the encoder; this pins cshell's glue (JSON-string
parsing, tii load, the args→resolve-request hand-off) that the SDK tests
skip. Adds a staged `tests/fixtures/invoke.tii`.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 src/tx/common.rs          | 46 ++++++++++++++++++++
 tests/fixtures/invoke.tii | 91 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 137 insertions(+)
 create mode 100644 tests/fixtures/invoke.tii

diff --git a/src/tx/common.rs b/src/tx/common.rs
index 90ccacd..f0e65dc 100644
--- a/src/tx/common.rs
+++ b/src/tx/common.rs
@@ -262,3 +262,49 @@ pub async fn sign_tx(
 
     Ok(cbor)
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    // The invoke glue cshell owns: `prepare_invocation` (load the .tii + select
+    // the tx) → `load_args` (parse `--args-json` → `set_args`) →
+    // `into_resolve_request`. A complex record arg must serialize to the tagged
+    // wire form while scalars stay bare — the `05-invoke` arg surface.
+    #[test]
+    fn invoke_encodes_diverse_args_into_resolve_request() {
+        let tii = format!("{}/tests/fixtures/invoke.tii", env!("CARGO_MANIFEST_DIR"));
+        let mut invocation =
+            prepare_invocation(Path::new(&tii), Some("transfer"), None).unwrap();
+
+        let args_json = r#"{
+            "quantity": 2000000,
+            "urgent": true,
+            "memo": "deadbeef",
+            "meta": { "tags": [1, 2, 3], "level": 7 }
+        }"#;
+        load_args(&mut invocation, Some(args_json), None).unwrap();
+
+        let request = invocation.into_resolve_request().unwrap();
+
+        // Record `meta` → tagged struct; fields positional in declared order
+        // (tags, level), not alphabetical.
+        assert_eq!(
+            request.args["meta"],
+            json!({
+                "struct": {
+                    "constructor": 0,
+                    "fields": [
+                        { "list": [{ "int": 1 }, { "int": 2 }, { "int": 3 }] },
+                        { "int": 7 }
+                    ]
+                }
+            })
+        );
+
+        // Scalars stay bare for the resolver to coerce via the flat type.
+        assert_eq!(request.args["quantity"], json!(2000000));
+        assert_eq!(request.args["urgent"], json!(true));
+        assert_eq!(request.args["memo"], json!("deadbeef"));
+    }
+}
diff --git a/tests/fixtures/invoke.tii b/tests/fixtures/invoke.tii
new file mode 100644
index 0000000..86fc149
--- /dev/null
+++ b/tests/fixtures/invoke.tii
@@ -0,0 +1,91 @@
+{
+  "components": {
+    "schemas": {
+      "Meta": {
+        "properties": {
+          "level": {
+            "type": "integer"
+          },
+          "tags": {
+            "items": {
+              "type": "integer"
+            },
+            "type": "array"
+          }
+        },
+        "required": [
+          "tags",
+          "level"
+        ],
+        "type": "object"
+      }
+    }
+  },
+  "environment": {
+    "properties": {},
+    "required": [],
+    "type": "object"
+  },
+  "parties": {
+    "receiver": {},
+    "sender": {}
+  },
+  "profiles": {
+    "local": {
+      "environment": {},
+      "parties": {}
+    },
+    "mainnet": {
+      "environment": {},
+      "parties": {}
+    },
+    "preprod": {
+      "environment": {},
+      "parties": {}
+    },
+    "preview": {
+      "environment": {},
+      "parties": {}
+    }
+  },
+  "protocol": {
+    "name": "cshell-fix",
+    "scope": "unknown",
+    "version": "0.0.0"
+  },
+  "tii": {
+    "version": "v1beta0"
+  },
+  "transactions": {
+    "transfer": {
+      "params": {
+        "properties": {
+          "memo": {
+            "$ref": "https://tx3.land/specs/v1beta0/tii#/$defs/Bytes"
+          },
+          "meta": {
+            "$ref": "#/components/schemas/Meta"
+          },
+          "quantity": {
+            "type": "integer"
+          },
+          "urgent": {
+            "type": "boolean"
+          }
+        },
+        "required": [
+          "quantity",
+          "urgent",
+          "memo",
+          "meta"
+        ],
+        "type": "object"
+      },
+      "tir": {
+        "content": "ab6466656573a1694576616c506172616d6a457870656374466565736a7265666572656e6365738066696e7075747381a3646e616d6566736f75726365657574786f73a1694576616c506172616da16b457870656374496e7075748266736f75726365a56761646472657373a1694576616c506172616da16b45787065637456616c7565826673656e64657267416464726573736a6d696e5f616d6f756e74a16b4576616c4275696c74496ea16341646482a16641737365747381a366706f6c696379644e6f6e656a61737365745f6e616d65644e6f6e6566616d6f756e74a1694576616c506172616da16b45787065637456616c756582687175616e7469747963496e74a1694576616c506172616d6a4578706563744665657363726566644e6f6e65646d616e79f46a636f6c6c61746572616cf46872656465656d6572644e6f6e65676f75747075747382a46761646472657373a1694576616c506172616da16b45787065637456616c756582687265636569766572674164647265737365646174756da166537472756374a26b636f6e7374727563746f7200666669656c647383a1694576616c506172616da16b45787065637456616c756582646d656d6f654279746573a1694576616c506172616da16b45787065637456616c75658266757267656e7464426f6f6ca1694576616c506172616da16b45787065637456616c756582646d657461a166437573746f6d644d65746166616d6f756e74a16641737365747381a366706f6c696379644e6f6e656a61737365745f6e616d65644e6f6e6566616d6f756e74a1694576616c506172616da16b45787065637456616c756582687175616e7469747963496e74686f7074696f6e616cf4a46761646472657373a1694576616c506172616da16b45787065637456616c7565826673656e646572674164647265737365646174756d644e6f6e6566616d6f756e74a16b4576616c4275696c74496ea16353756282a16b4576616c4275696c74496ea16353756282a16a4576616c436f65726365a16a496e746f417373657473a1694576616c506172616da16b457870656374496e7075748266736f75726365a56761646472657373a1694576616c506172616da16b45787065637456616c7565826673656e64657267416464726573736a6d696e5f616d6f756e74a16b4576616c4275696c74496ea16341646482a16641737365747381a366706f6c696379644e6f6e656a61737365745f6e616d65644e6f6e6566616d6f756e74a1694576616c506172616da16b45787065637456616c756582687175616e7469747963496e74a1694576616c506172616d6a4578706563744665657363726566644e6f6e65646d616e79f46a636f6c6c61746572616cf4a16641737365747381a366706f6c696379644e6f6e656a61737365745f6e616d65644e6f6e6566616d6f756e74a1694576616c506172616da16b45787065637456616c756582687175616e7469747963496e74a1694576616c506172616d6a45787065637446656573686f7074696f6e616cf46876616c6964697479f6656d696e747380656275726e7380656164686f63806a636f6c6c61746572616c80677369676e657273f6686d6574616461746180",
+        "encoding": "hex",
+        "version": "v1beta0"
+      }
+    }
+  }
+}
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