Add test to reproduce #1694 (#1727)

Co-authored-by: Leigh McCulloch <[email protected]>

cmd/crates/soroban-test/tests/it/build.rs

@@ -1,5 +1,8 @@
 use predicates::prelude::predicate;
+use soroban_cli::xdr::{Limited, Limits, ReadXdr, ScMetaEntry, ScMetaV0};
+use soroban_spec_tools::contract::Spec;
 use soroban_test::TestEnv;
+use std::io::Cursor;
 
 #[test]
 fn build_all() {
@@ -135,18 +138,50 @@ fn build_with_metadata() {
         .assert()
         .success();
 
-    // verify that the metadata added in the contract code via contractmetadata! macro is present
-    // as well as the meta that is included on build
-    let wasm_path = fixture_path.join(&outdir).join("add.wasm");
     sandbox
         .new_assert_cmd("contract")
         .current_dir(&fixture_path)
-        .arg("info")
-        .arg("meta")
-        .arg("--wasm")
-        .arg(wasm_path)
+        .arg("build")
+        .arg("--meta")
+        .arg("meta_replaced=some_new_meta")
+        .arg("--out-dir")
+        .arg(&outdir)
         .assert()
-        .success()
-        .stdout(predicate::str::contains("Description: A test add contract"))
-        .stdout(predicate::str::contains("contract meta: added on build"));
+        .success();
+
+    // verify that the metadata added in the contract code via contractmetadata! macro is present
+    // as well as the meta that is included on build
+    let wasm_path = fixture_path.join(&outdir).join("add.wasm");
+    let wasm = std::fs::read(wasm_path).unwrap();
+    let spec = Spec::new(&wasm).unwrap();
+    let meta = spec.meta_base64.unwrap();
+    let entries = ScMetaEntry::read_xdr_base64_iter(&mut Limited::new(
+        Cursor::new(meta.as_bytes()),
+        Limits::none(),
+    ))
+    .filter(|entry| match entry {
+        // Ignore the meta entries that the SDK embeds that capture the SDK and
+        // Rust version, since these will change often and are not really
+        // relevant to this test.
+        Ok(ScMetaEntry::ScMetaV0(ScMetaV0 { key, .. })) => {
+            let key = key.to_string();
+            !matches!(key.as_str(), "rsver" | "rssdkver")
+        }
+        _ => true,
+    })
+    .collect::<Result<Vec<_>, _>>()
+    .unwrap();
+
+    let expected_entries = vec![
+        ScMetaEntry::ScMetaV0(ScMetaV0 {
+            key: "Description".try_into().unwrap(),
+            val: "A test add contract".try_into().unwrap(),
+        }),
+        ScMetaEntry::ScMetaV0(ScMetaV0 {
+            key: "meta_replaced".try_into().unwrap(),
+            val: "some_new_meta".try_into().unwrap(),
+        }),
+    ];
+
+    assert_eq!(entries, expected_entries);
 }