Fuzz tests ERC1155

docs/modules/ROOT/pages/api/testing.adoc

@@ -39,6 +39,7 @@ use openzeppelin_testing::common;
 * xref:#testing-common-to_base_16_string[`++to_base_16_string(value)++`]
 * xref:#testing-common-to_base_16_string_no_padding[`++to_base_16_string_no_padding(value)++`]
 * xref:#testing-common-assert_entrypoint_not_found_error[`++assert_entrypoint_not_found_error(result, selector, contract_address)++`]
+* xref:#testing-common-repeat[`++repeat(element, n_times)++`]
 
 .Traits
 * xref:#testing-common-IntoBase16StringTrait[`++IntoBase16StringTrait++`]
@@ -75,6 +76,12 @@ prefix.
 Asserts that the syscall result of a call failed with an "Entrypoint not found" error,
 following the Starknet Foundry emitted error format.
 
+[.contract-item]
+[[testing-common-repeat]]
+==== `[.contract-item-name]#++repeat++#<T, +Drop<T>>(element: T, n_times: N) → Array<T>` [.item-kind]#function#
+
+Creates and returns a new array consisting of the given `element` repeated `n_times` times.
+
 [#testing-common-Traits]
 ==== Traits
 

packages/testing/src/common.cairo

@@ -71,3 +71,13 @@ pub fn assert_entrypoint_not_found_error<T, +Drop<T>>(
         panic!("{selector} call was expected to fail, but succeeded");
     }
 }
+
+/// Creates and returns a new array consisting of the given `element` repeated `n_times` times.
+pub fn repeat<T, N, +Copy<T>, +Drop<T>, +Into<N, u256>>(element: T, n_times: N) -> Array<T> {
+    let mut result = array![];
+    let len: u256 = n_times.into();
+    for _ in 0..len {
+        result.append(element);
+    };
+    result
+}

packages/token/src/tests/erc1155.cairo

@@ -1,2 +1,5 @@
 mod test_erc1155;
 mod test_erc1155_receiver;
+
+#[cfg(feature: 'fuzzing')]
+mod test_fuzz_erc1155;