1 files changed, 47 insertions, 0 deletions
diff --git a/packages/instant/test/util/asset.test.ts b/packages/instant/test/util/asset.test.ts
new file mode 100644
index 000000000..c7db7eba7
--- /dev/null
+++ b/packages/instant/test/util/asset.test.ts
@@ -0,0 +1,47 @@
+import { AssetProxyId, ObjectMap } from '@0x/types';
+
+import { Asset, AssetMetaData, ERC20AssetMetaData, Network, ZeroExInstantError } from '../../src/types';
+import { assetUtils } from '../../src/util/asset';
+
+const ZRX_ASSET_DATA = '0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498';
+const ZRX_ASSET_DATA_KOVAN = '0xf47261b00000000000000000000000002002d3812f58e35f0ea1ffbf80a75a38c32175fa';
+const ZRX_META_DATA: ERC20AssetMetaData = {
+    assetProxyId: AssetProxyId.ERC20,
+    symbol: 'zrx',
+    decimals: 18,
+};
+const ZRX_ASSET: Asset = {
+    assetData: ZRX_ASSET_DATA,
+    metaData: ZRX_META_DATA,
+};
+const META_DATA_MAP: ObjectMap<AssetMetaData> = {
+    [ZRX_ASSET_DATA]: ZRX_META_DATA,
+};
+
+describe('assetDataUtil', () => {
+    describe('bestNameForAsset', () => {
+        it('should return default string if assetData is undefined', () => {
+            expect(assetUtils.bestNameForAsset(undefined, 'xyz')).toEqual('xyz');
+        });
+        it('should return ZRX for ZRX assetData', () => {
+            expect(assetUtils.bestNameForAsset(ZRX_ASSET, 'mah default')).toEqual('ZRX');
+        });
+    });
+    describe('getMetaDataOrThrow', () => {
+        it('should return the metaData for the supplied mainnet asset data', () => {
+            expect(assetUtils.getMetaDataOrThrow(ZRX_ASSET_DATA, META_DATA_MAP, Network.Mainnet)).toEqual(
+                ZRX_META_DATA,
+            );
+        });
+        it('should return the metaData for the supplied non-mainnet asset data', () => {
+            expect(assetUtils.getMetaDataOrThrow(ZRX_ASSET_DATA_KOVAN, META_DATA_MAP, Network.Kovan)).toEqual(
+                ZRX_META_DATA,
+            );
+        });
+        it('should throw if the metaData for the asset is not available', () => {
+            expect(() =>
+                assetUtils.getMetaDataOrThrow('asset data we dont have', META_DATA_MAP, Network.Mainnet),
+            ).toThrowError(ZeroExInstantError.AssetMetaDataNotAvailable);
+        });
+    });
+});