Function TestAllowNilZeroCopy

_generated/limits_test.go:1170–1387

(t *testing.T)

}

func TestAllowNilZeroCopy(t *testing.T) {
	// Test that zerocopy+allownil combination works correctly with security fixes

	t.Run("ZeroCopy_AllowNil_NilValues_UnmarshalMsg", func(t *testing.T) {
		data := AllowNilTestData{}

		// Create message with nil for zerocopy+allownil field
		buf := msgp.AppendMapHeader(nil, 1)
		buf = msgp.AppendString(buf, "nil_zc_slice")
		buf = msgp.AppendNil(buf)

		_, err := data.UnmarshalMsg(buf)
		if err != nil {
			t.Fatalf("UnmarshalMsg failed with zerocopy allownil nil value: %v", err)
		}

		// Field should remain nil
		if data.NilZCSlice != nil {
			t.Errorf("Expected NilZCSlice to remain nil, got %v", data.NilZCSlice)
		}
	})

	t.Run("ZeroCopy_AllowNil_EmptyData_UnmarshalMsg", func(t *testing.T) {
		data := AllowNilTestData{}

		// Create message with empty data for zerocopy+allownil field
		buf := msgp.AppendMapHeader(nil, 1)
		buf = msgp.AppendString(buf, "nil_zc_slice")
		buf = msgp.AppendBytes(buf, []byte{})

		_, err := data.UnmarshalMsg(buf)
		if err != nil {
			t.Fatalf("UnmarshalMsg failed with zerocopy allownil empty data: %v", err)
		}

		// Field should be allocated but empty
		if data.NilZCSlice == nil {
			t.Error("Expected NilZCSlice to be allocated (empty), got nil")
		}
		if len(data.NilZCSlice) != 0 {
			t.Errorf("Expected NilZCSlice to be empty, got length %d", len(data.NilZCSlice))
		}
	})

	t.Run("ZeroCopy_AllowNil_WithData_UnmarshalMsg", func(t *testing.T) {
		data := AllowNilTestData{}
		testData := []byte{1, 2, 3, 4, 5}

		// Create message with actual data for zerocopy+allownil field
		buf := msgp.AppendMapHeader(nil, 1)
		buf = msgp.AppendString(buf, "nil_zc_slice")
		buf = msgp.AppendBytes(buf, testData)

		originalBuf := make([]byte, len(buf))
		copy(originalBuf, buf)

		_, err := data.UnmarshalMsg(buf)
		if err != nil {