diff --git a/x/airdrop/types/genesis.go b/x/airdrop/types/genesis.go
index 532304440..03565f6ae 100644
--- a/x/airdrop/types/genesis.go
+++ b/x/airdrop/types/genesis.go
@@ -80,7 +80,7 @@ func (gs *GenesisState) Validate() error {
 	return nil
 }
 
-// GetGenesisStateFromAppState returns x/bank GenesisState given raw application
+// GetGenesisStateFromAppState returns x/airdrop GenesisState given raw application
 // genesis state.
 func GetGenesisStateFromAppState(cdc codec.JSONCodec, appState map[string]json.RawMessage) *GenesisState {
 	var genesisState GenesisState
diff --git a/x/airdrop/types/genesis_test.go b/x/airdrop/types/genesis_test.go
index 04548c1c5..e445833b9 100644
--- a/x/airdrop/types/genesis_test.go
+++ b/x/airdrop/types/genesis_test.go
@@ -16,6 +16,9 @@ func TestGenesisState_Validate(t *testing.T) {
 		ZoneDrops    []*types.ZoneDrop
 		ClaimRecords []*types.ClaimRecord
 	}
+
+	defaultGenesis := types.DefaultGenesisState()
+
 	tests := []struct {
 		name    string
 		fields  fields
@@ -26,6 +29,15 @@ func TestGenesisState_Validate(t *testing.T) {
 			fields{},
 			false,
 		},
+		{
+			"default genesis",
+			fields{
+				defaultGenesis.Params,
+				defaultGenesis.ZoneDrops,
+				defaultGenesis.ClaimRecords,
+			},
+			false,
+		},
 		{
 			"duplicate zone drop",
 			fields{
diff --git a/x/airdrop/types/msgs_test.go b/x/airdrop/types/msgs_test.go
index 7950ffca6..77c7ad289 100644
--- a/x/airdrop/types/msgs_test.go
+++ b/x/airdrop/types/msgs_test.go
@@ -3,6 +3,7 @@ package types_test
 import (
 	"testing"
 
+	sdkmath "cosmossdk.io/math"
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/stretchr/testify/require"
 	"github.com/tendermint/tendermint/proto/tendermint/crypto"
@@ -100,6 +101,78 @@ func TestMsgClaim_ValidateBasic(t *testing.T) {
 			},
 			true,
 		},
+		{
+			"invalid proof no key",
+			fields{
+				ChainID: "cosmoshub-4",
+				Action:  int64(types.ActionInitialClaim),
+				Address: "cosmos1pgfzn0zhxjjgte7hprwtnqyhrn534lqk437x2w",
+				Proofs: []*cmtypes.Proof{
+					{
+						Key:       nil,
+						Data:      []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+						ProofOps:  &crypto.ProofOps{},
+						Height:    10,
+						ProofType: "lockup",
+					},
+				},
+			},
+			true,
+		},
+		{
+			"invalid proof no data",
+			fields{
+				ChainID: "cosmoshub-4",
+				Action:  int64(types.ActionInitialClaim),
+				Address: "cosmos1pgfzn0zhxjjgte7hprwtnqyhrn534lqk437x2w",
+				Proofs: []*cmtypes.Proof{
+					{
+						Key:       []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+						Data:      nil,
+						ProofOps:  &crypto.ProofOps{},
+						Height:    10,
+						ProofType: "lockup",
+					},
+				},
+			},
+			true,
+		},
+		{
+			"invalid proof no proof ops",
+			fields{
+				ChainID: "cosmoshub-4",
+				Action:  int64(types.ActionInitialClaim),
+				Address: "cosmos1pgfzn0zhxjjgte7hprwtnqyhrn534lqk437x2w",
+				Proofs: []*cmtypes.Proof{
+					{
+						Key:       []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+						Data:      []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+						ProofOps:  nil,
+						Height:    10,
+						ProofType: "lockup",
+					},
+				},
+			},
+			true,
+		},
+		{
+			"invalid proof no height",
+			fields{
+				ChainID: "cosmoshub-4",
+				Action:  int64(types.ActionInitialClaim),
+				Address: "cosmos1pgfzn0zhxjjgte7hprwtnqyhrn534lqk437x2w",
+				Proofs: []*cmtypes.Proof{
+					{
+						Key:       []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+						Data:      []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+						ProofOps:  &crypto.ProofOps{},
+						Height:    -1,
+						ProofType: "lockup",
+					},
+				},
+			},
+			true,
+		},
 		{
 			"valid",
 			fields{
@@ -187,7 +260,7 @@ func TestMsgIncentivePoolSpendValidateBasic(t *testing.T) {
 			true,
 		},
 		{
-			"invalid amount",
+			"non positive amount",
 			fields{
 				Authority: addr1,
 				ToAddress: addr2,
@@ -195,6 +268,18 @@ func TestMsgIncentivePoolSpendValidateBasic(t *testing.T) {
 			},
 			true,
 		},
+		{
+			"invalid amount",
+			fields{
+				Authority: addr1,
+				ToAddress: addr2,
+				Amount: sdk.Coins{sdk.Coin{
+					Denom:  "",
+					Amount: sdkmath.NewInt(1000),
+				}},
+			},
+			true,
+		},
 		{
 			"valid",
 			fields{
diff --git a/x/airdrop/types/zip_test.go b/x/airdrop/types/zip_test.go
index ceb843163..d90273de6 100644
--- a/x/airdrop/types/zip_test.go
+++ b/x/airdrop/types/zip_test.go
@@ -1,3 +1,61 @@
 package types_test
 
+import (
+	"bytes"
+	"compress/zlib"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/ingenuity-build/quicksilver/x/airdrop/types"
+)
+
 // TODO test
+
+func TestDecompress(t *testing.T) {
+	testString := "hello, world\n"
+	var b bytes.Buffer
+	w := zlib.NewWriter(&b)
+	_, err := w.Write([]byte(testString))
+	require.NoError(t, err)
+	require.NoError(t, w.Close())
+
+	tests := []struct {
+		name     string
+		data     []byte
+		expected []byte
+		wantErr  bool
+	}{
+		{
+			"no data",
+			nil,
+			nil,
+			true,
+		},
+		{
+			"no data",
+			[]byte{0, 0, 0},
+			nil,
+			true,
+		},
+
+		{
+			"valid data",
+			b.Bytes(),
+			[]byte(testString),
+			false,
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			got, err := types.Decompress(tc.data)
+			if tc.wantErr {
+				require.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+			require.Equal(t, tc.expected, got)
+		})
+	}
+}