Vendor dependencies for 0.3.0 release

vendor/jni/tests/jmap.rs

@@ -0,0 +1,43 @@
+#![cfg(feature = "invocation")]
+
+use jni::objects::{JMap, JObject, JString};
+
+mod util;
+use util::{attach_current_thread, unwrap};
+
+#[test]
+pub fn jmap_push_and_iterate() {
+    let mut env = attach_current_thread();
+    let data = &["hello", "world", "from", "test"];
+
+    // Create a new map. Use LinkedHashMap to have predictable iteration order
+    let map_object = unwrap(env.new_object("java/util/LinkedHashMap", "()V", &[]), &env);
+    let map = unwrap(JMap::from_env(&mut env, &map_object), &env);
+
+    // Push all strings
+    unwrap(
+        data.iter().try_for_each(|s| {
+            env.new_string(s)
+                .map(JObject::from)
+                .and_then(|s| map.put(&mut env, &s, &s).map(|_| ()))
+        }),
+        &env,
+    );
+
+    // Collect the keys using the JMap iterator
+    let mut collected = Vec::new();
+    unwrap(
+        map.iter(&mut env).and_then(|mut iter| {
+            while let Some(e) = iter.next(&mut env)? {
+                let s = JString::from(e.0);
+                let s = env.get_string(&s)?;
+                collected.push(String::from(s));
+            }
+            Ok(())
+        }),
+        &env,
+    );
+
+    let orig = data.to_vec();
+    assert_eq!(orig, collected);
+}