Use minimum limit as initial table size (#196)

lib/runtime-core/src/memory/mod.rs

@@ -306,3 +306,21 @@ impl Clone for SharedMemory {
         unimplemented!()
     }
 }
+
+#[cfg(test)]
+mod memory_tests {
+
+    use super::{Memory, MemoryDescriptor, Pages};
+
+    #[test]
+    fn test_initial_memory_size() {
+        let unshared_memory = Memory::new(MemoryDescriptor {
+            minimum: Pages(10),
+            maximum: Some(Pages(20)),
+            shared: false,
+        })
+        .unwrap();
+        assert_eq!(unshared_memory.size(), Pages(10));
+    }
+
+}