From 1b31d09278abdb30f74db3cb1c2635e2ad950c23 Mon Sep 17 00:00:00 2001
From: Moriz Wahl <moriz.wahl@gmx.de>
Date: Tue, 13 Dec 2022 20:42:20 +0100
Subject: [PATCH] add tests for semaphore

---
 .../resolver/TransactionResolver.test.ts      | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/backend/src/graphql/resolver/TransactionResolver.test.ts b/backend/src/graphql/resolver/TransactionResolver.test.ts
index 1d4fe5708..69673d47c 100644
--- a/backend/src/graphql/resolver/TransactionResolver.test.ts
+++ b/backend/src/graphql/resolver/TransactionResolver.test.ts
@@ -368,5 +368,74 @@ describe('send coins', () => {
         )
       })
     })
+
+    describe('more transactions to test semaphore', () => {
+      it('sends the coins four times in a row', async () => {
+        await expect(
+          mutate({
+            mutation: sendCoins,
+            variables: {
+              email: 'peter@lustig.de',
+              amount: 50,
+              memo: 'first transaction',
+            },
+          }),
+        ).resolves.toEqual(
+          expect.objectContaining({
+            data: {
+              sendCoins: 'true',
+            },
+          }),
+        )
+        await expect(
+          mutate({
+            mutation: sendCoins,
+            variables: {
+              email: 'peter@lustig.de',
+              amount: 50,
+              memo: 'second transaction',
+            },
+          }),
+        ).resolves.toEqual(
+          expect.objectContaining({
+            data: {
+              sendCoins: 'true',
+            },
+          }),
+        )
+        await expect(
+          mutate({
+            mutation: sendCoins,
+            variables: {
+              email: 'peter@lustig.de',
+              amount: 50,
+              memo: 'third transaction',
+            },
+          }),
+        ).resolves.toEqual(
+          expect.objectContaining({
+            data: {
+              sendCoins: 'true',
+            },
+          }),
+        )
+        await expect(
+          mutate({
+            mutation: sendCoins,
+            variables: {
+              email: 'peter@lustig.de',
+              amount: 50,
+              memo: 'fourth transaction',
+            },
+          }),
+        ).resolves.toEqual(
+          expect.objectContaining({
+            data: {
+              sendCoins: 'true',
+            },
+          }),
+        )
+      })
+    })
   })
 })