Migrate the other-dependencies test to wit-bindgen test (#1227)

This is a bit different from the other tests, it's mostly just a test
for Rust's behavior of the `generate!` macro.

Author: alexcrichton

crates/test-rust-wasm/src/bin/other-dependencies.rs

@@ -157,7 +157,8 @@ path = 'lib.rs'
             compile.output.with_extension("core.wasm")
         };
 
-        cmd.env("CARGO_MANIFEST_DIR", ".")
+        let manifest_dir = compile.component.path.parent().unwrap();
+        cmd.env("CARGO_MANIFEST_DIR", manifest_dir)
             .env(
                 "BINDINGS",
                 compile

crates/test/src/rust.rs

@@ -0,0 +1,5 @@
+package other:test;
+
+interface test {
+  f: func();
+}

tests/runtime-new/rust/other-dependencies/other.wit

@@ -0,0 +1,17 @@
+wit_bindgen::generate!({
+    inline: r#"
+        package test:deps;
+
+        world test {
+            import other:test/test;
+        }
+    "#,
+    path: "./other.wit",
+    with: {
+        "other:test/test": generate,
+    }
+});
+
+fn main() {
+    other::test::test::f();
+}

tests/runtime-new/rust/other-dependencies/runner.rs

@@ -0,0 +1,23 @@
+wit_bindgen::generate!({
+    inline: r#"
+        package test:deps;
+
+        world test {
+            export other:test/test;
+        }
+    "#,
+    path: "./other.wit",
+    with: {
+        "other:test/test": generate,
+    }
+});
+
+use crate::exports::other::test::test::Guest;
+
+struct Component;
+
+export!(Component);
+
+impl Guest for Component {
+    fn f() {}
+}

tests/runtime-new/rust/other-dependencies/test.rs

@@ -0,0 +1,8 @@
+// note that this isn't actually used since the auto-generated bindings are
+// ignored and the `generate!` macro is customized for this test as it's
+// specifically testing behavior of the `generate!` macro.
+
+package a:b;
+
+world test {}
+world runner {}

tests/runtime-new/rust/other-dependencies/test.wit

@@ -15,7 +15,6 @@ use wit_parser::{Resolve, WorldId, WorldItem};
 
 mod flavorful;
 mod options;
-mod other_dependencies;
 mod ownership;
 mod records;
 mod resource_alias;