chore: add GetGenesis test helper

testutil/network/genesis.go

@@ -0,0 +1,30 @@
+package network
+
+import (
+ "reflect"
+ "testing"
+
+ "github.com/cosmos/gogoproto/proto"
+ "github.com/stretchr/testify/require"
+)
+
+// GetGenesisState retrieves the genesis state for a given module from the
+// underlying cosmos-sdk testutil network.
+func GetGenesisState[T proto.Message](t *testing.T, moduleName string, memnet InMemoryCosmosNetwork) T {
+ t.Helper()
+
+ require.NotEmptyf(t, memnet.GetNetwork(t), "in-memory network not started yet, call inMemoryNetworkWithSessions#Start() first")
+
+ var genesisState T
+ // NB: As this function is generic, it MUST use reflect in order to unmarshal
+ // the genesis state as the codec requries a reference to a concrete type pointer.
+ genesisStateType := reflect.TypeOf(genesisState)
+ genesisStateValue := reflect.New(genesisStateType.Elem())
+ genesisStatePtr := genesisStateValue.Interface().(proto.Message)
+
+ genesisStateJSON := memnet.GetNetworkConfig(t).GenesisState[moduleName]
+ err := memnet.GetNetworkConfig(t).Codec.UnmarshalJSON(genesisStateJSON, genesisStatePtr)
+ require.NoError(t, err)
+
+ return genesisStatePtr.(T)
+}