1 files changed, 46 insertions, 0 deletions
diff --git a/packages/connect/test/ws_orderbook_channel_test.ts b/packages/connect/test/ws_orderbook_channel_test.ts
new file mode 100644
index 000000000..f3dead9ae
--- /dev/null
+++ b/packages/connect/test/ws_orderbook_channel_test.ts
@@ -0,0 +1,46 @@
+import 'mocha';
+import * as _ from 'lodash';
+import * as dirtyChai from 'dirty-chai';
+import * as chai from 'chai';
+import {
+    WebSocketOrderbookChannel,
+} from '../src/index';
+
+chai.config.includeStack = true;
+chai.use(dirtyChai);
+const expect = chai.expect;
+
+describe('WebSocketOrderbookChannel', () => {
+    const websocketUrl = 'ws://localhost:8080';
+    const orderbookChannel = new WebSocketOrderbookChannel(websocketUrl);
+    const subscriptionOpts = {
+        baseTokenAddress: '0x323b5d4c32345ced77393b3530b1eed0f346429d',
+        quoteTokenAddress: '0xef7fff64389b814a946f3e92105513705ca6b990',
+        snapshot: true,
+        limit: 100,
+    };
+    const emptyOrderbookChannelHandler = {
+        onSnapshot: () => { _.noop(); },
+        onUpdate: () => { _.noop(); },
+        onError: () => { _.noop(); },
+        onClose: () => { _.noop(); },
+    };
+    describe('#subscribe', () => {
+        it('throws when subscriptionOpts does not conform to schema', () => {
+            const badSubscribeCall = orderbookChannel.subscribe.bind(
+                orderbookChannel, {}, emptyOrderbookChannelHandler);
+            // tslint:disable-next-line:max-line-length
+            expect(badSubscribeCall).throws('Expected subscriptionOpts to conform to schema /RelayerApiOrderbookChannelSubscribePayload\nEncountered: {}\nValidation errors: instance requires property "baseTokenAddress", instance requires property "quoteTokenAddress"');
+        });
+        it('throws when handler has the incorrect members', () => {
+            const badSubscribeCall = orderbookChannel.subscribe.bind(orderbookChannel, subscriptionOpts, {});
+            expect(badSubscribeCall)
+                .throws('Expected handler.onSnapshot to be of type function, encountered: undefined');
+        });
+        it('does not throw when inputs are of correct types', () => {
+            const goodSubscribeCall = orderbookChannel.subscribe.bind(
+                orderbookChannel, subscriptionOpts, emptyOrderbookChannelHandler);
+            expect(goodSubscribeCall).to.not.throw();
+        });
+    });
+});