Add unit test

lib/runtime/wasmer/config_test.go

@@ -0,0 +1,35 @@
+// Copyright 2022 ChainSafe Systems (ON)
+// SPDX-License-Identifier: LGPL-3.0-only
+
+package wasmer
+
+import (
+	"testing"
+
+	"github.com/ChainSafe/gossamer/lib/runtime"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_Config_SetTestVersion(t *testing.T) {
+	t.Run("panics with nil *testing.T", func(t *testing.T) {
+		var c Config
+		assert.PanicsWithValue(t,
+			"*testing.T argument cannot be nil. Please don't use this function outside of Go tests.",
+			func() {
+				c.SetTestVersion(nil, runtime.Version{})
+			})
+	})
+
+	t.Run("set test version", func(t *testing.T) {
+		var c Config
+		testVersion := runtime.Version{
+			StateVersion: 1,
+		}
+
+		c.SetTestVersion(t, testVersion)
+
+		require.NotNil(t, c.testVersion)
+		assert.Equal(t, testVersion, *c.testVersion)
+	})
+}