Use rejectedWith

2017-12-06 22:30:08 -06:00
parent 86e1fa8153
commit 0c23f5e07e
1 changed files with 4 additions and 9 deletions
--- a/packages/subproviders/test/unit/ledger_subprovider_test.ts
+++ b/packages/subproviders/test/unit/ledger_subprovider_test.ts
@@ -80,15 +80,10 @@ describe('LedgerSubprovider', () => {
        describe('failure cases', () => {
            it('cannot open multiple simultaneous connections to the Ledger device', async () => {
                const data = ethUtils.bufferToHex(ethUtils.toBuffer('hello world'));
-                try {
-                    const result = await Promise.all([
-                        ledgerSubprovider.getAccountsAsync(),
-                        ledgerSubprovider.signPersonalMessageAsync(data),
-                    ]);
-                    throw new Error('Multiple simultaneous calls succeeded when they should have failed');
-                } catch (err) {
-                    expect(err.message).to.be.equal(LedgerSubproviderErrors.MultipleOpenConnectionsDisallowed);
-                }
+                return expect(Promise.all([
+                    ledgerSubprovider.getAccountsAsync(),
+                    ledgerSubprovider.signPersonalMessageAsync(data),
+                ])).to.be.rejectedWith(LedgerSubproviderErrors.MultipleOpenConnectionsDisallowed);
            });
        });
    });