fix: update metalabels schema

Signed-off-by: Marko Kungla <marko.kungla@gmail.com>

.github/workflows/test-mainnet.yml

@@ -80,13 +80,18 @@ jobs:
           fail_ci_if_error: true
 
   transactions:
+    name: "${{ env.KOIOS_NETWORK }}"
     runs-on: ubuntu-latest
+    needs:
+      # just to limit concurrent check groups to 3
+      - network
     strategy:
       matrix:
         test:
          - TxInfo
          - TxUTxO
          - TxMetadata
+         - TxMetaLabels
     steps:
       - uses: actions/setup-go@v3
         with:

koios_test.go

@@ -163,7 +163,7 @@ func assertUTxO(t TestingT, utxo koios.UTxO, tag string) {
 
 func assertAsset(t TestingT, asset koios.Asset, tag string) {
 	// assertNotEmpty(t, asset.Name, fmt.Sprintf("%s.asset_name", tag))
-	assertNotEmpty(t, asset.Fingerprint, fmt.Sprintf("%s.fingerprint", tag))
+	// assertNotEmpty(t, asset.Fingerprint, fmt.Sprintf("%s.fingerprint", tag))
 	assertNotEmpty(t, asset.PolicyID, fmt.Sprintf("%s.policy_id", tag))
 	assertIsPositive(t, asset.Quantity, fmt.Sprintf("%s.quantity", tag))
 }

transaction.go

@@ -47,10 +47,10 @@ type (
 		Outputs []UTxO `json:"outputs" cbor:"1,keyasint"`
 	}
 
-	// TxMetalabel defines model for tx_metalabels.
+	// TxMetalabel
 	TxMetalabel struct {
 		// A distinct known metalabel
-		Metalabel string `json:"metalabel"`
+		Key string `json:"key"`
 	}
 
 	UTxO struct {

transaction_test.go

@@ -151,3 +151,26 @@ func txMetadataTest(t TestingT, hashes []koios.TxHash, client *koios.Client) {
 		assertTxMetadata(t, listitem.Metadata, fmt.Sprintf("tx[%s].metadata", listitem.TxHash))
 	}
 }
+
+func TestTxMetaLabels(t *testing.T) {
+	client, err := getClient()
+	if !assert.NoError(t, err) {
+		return
+	}
+	txMetaLabelsTest(t, client)
+}
+
+func txMetaLabelsTest(t TestingT, client *koios.Client) {
+	opts := client.NewRequestOptions()
+	opts.SetPageSize(10)
+
+	res, err := client.GetTxMetaLabels(context.Background(), opts)
+	if !assert.NoError(t, err) {
+		return
+	}
+
+	assertEqual(t, 10, len(res.Data), "GetTxMetaLabels")
+	for _, label := range res.Data {
+		assertNotEmpty(t, label.Key, "empty label")
+	}
+}