diff --git a/ml-proto/test/grow-memory.wast b/ml-proto/test/grow-memory.wast
new file mode 100644
index 0000000000..07706ac4f6
--- /dev/null
+++ b/ml-proto/test/grow-memory.wast
@@ -0,0 +1,127 @@
+;; Withut a memory, can't use current_memory and grow_memory.
+(assert_invalid
+  (module
+    (func $cm (result i32)
+      (current_memory)
+    )
+  )
+  "memory operators require a memory section"
+)
+
+(assert_invalid
+  (module
+    (func $gm (param i32) (result i32)
+      (grow_memory (get_local 0))
+    )
+  )
+  "memory operators require a memory section"
+)
+
+;; Test Current Memory
+(module (memory 0 10)
+  (func $gm (param i32) (result i32)
+    (grow_memory (get_local 0))
+  )
+
+  (func $cm (result i32)
+    (current_memory)
+  )
+
+  (func $ldst8 (param i32) (param i32) (result i32)
+    (block
+      (i32.store8 (get_local 0) (get_local 1))
+      (i32.load8_u (get_local 0))
+    )
+  )
+
+  (func $ldst16 (param i32) (param i32) (result i32)
+    (block
+      (i32.store16 (get_local 0) (get_local 1))
+      (i32.load16_u (get_local 0))
+    )
+  )
+
+  (func $ldst32 (param i32) (param i32) (result i32)
+    (block
+      (i32.store (get_local 0) (get_local 1))
+      (i32.load (get_local 0))
+    )
+  )
+
+  (func $ldst64 (param i32) (param i64) (result i64)
+    (block
+      (i64.store (get_local 0) (get_local 1))
+      (i64.load (get_local 0))
+    )
+  )
+
+  (export "cm" $cm)
+  (export "gm" $gm)
+  (export "ldst8" $ldst8)
+  (export "ldst16" $ldst16)
+  (export "ldst32" $ldst32)
+  (export "ldst64" $ldst64)
+)
+
+;; Call current_memory on 0-sized memory
+(assert_return (invoke "cm") (i32.const 0))
+
+;; Growing by 0 is ok and doesn't map any new pages
+(assert_return (invoke "gm" (i32.const 0)) (i32.const 0))
+(assert_return (invoke "cm") (i32.const 0))
+(assert_trap (invoke "ldst8" (i32.const 0) (i32.const 42)) "out of bounds memory access")
+
+;; Can't grow by more than whats allowed
+(assert_return (invoke "gm" (i32.const 11)) (i32.const -1))
+(assert_return (invoke "cm") (i32.const 0))
+(assert_trap (invoke "ldst8" (i32.const 0) (i32.const 42)) "out of bounds memory access")
+
+;; Growing by X enables exactly X pages
+(assert_return (invoke "gm" (i32.const 1)) (i32.const 0))
+(assert_return (invoke "cm") (i32.const 1))
+(assert_return (invoke "ldst8" (i32.const 0) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst8" (i32.const 65535) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst16" (i32.const 65534) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst32" (i32.const 65532) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst64" (i32.const 65528) (i64.const 42)) (i64.const 42))
+(assert_trap (invoke "ldst8" (i32.const 65536) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst16" (i32.const 65535) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst32" (i32.const 65533) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst64" (i32.const 65529) (i64.const 42)) "out of bounds memory access")
+
+;; grow_memory returns last page size and again we've added only as many pages as requested.
+(assert_return (invoke "gm" (i32.const 2)) (i32.const 1))
+(assert_return (invoke "cm") (i32.const 3))
+
+;; and again we have only allocated 2 additional pages.
+(assert_return (invoke "ldst8" (i32.const 0) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst8" (i32.const 196607) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst16" (i32.const 196606) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst32" (i32.const 196604) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst64" (i32.const 196600) (i64.const 42)) (i64.const 42))
+(assert_trap (invoke "ldst8" (i32.const 196608) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst16" (i32.const 196607) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst32" (i32.const 196605) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst64" (i32.const 196601) (i64.const 42)) "out of bounds memory access")
+
+;; One more time can't grow by more than whats allowed and failed growing doesn't add new pages
+(assert_return (invoke "gm" (i32.const 8)) (i32.const -1))
+(assert_return (invoke "cm") (i32.const 3))
+(assert_return (invoke "ldst8" (i32.const 196607) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst16" (i32.const 196606) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst32" (i32.const 196604) (i32.const 42)) (i32.const 42))
+(assert_return (invoke "ldst64" (i32.const 196600) (i64.const 42)) (i64.const 42))
+(assert_trap (invoke "ldst8" (i32.const 196608) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst16" (i32.const 196607) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst32" (i32.const 196605) (i32.const 42)) "out of bounds memory access")
+(assert_trap (invoke "ldst64" (i32.const 196601) (i64.const 42)) "out of bounds memory access")
+
+;; Can't grow by number of pages that would overflow UINT32 when scaled by the wasm page size
+(assert_return (invoke "gm" (i32.const 65534)) (i32.const -1))
+(assert_return (invoke "cm") (i32.const 3))
+(assert_return (invoke "gm" (i32.const 65535)) (i32.const -1))
+(assert_return (invoke "cm") (i32.const 3))
+(assert_return (invoke "gm" (i32.const 65536)) (i32.const -1))
+(assert_return (invoke "cm") (i32.const 3))
+(assert_return (invoke "gm" (i32.const 65537)) (i32.const -1))
+(assert_return (invoke "cm") (i32.const 3))