From 95b25b3d3bb1fab9ad4e2d7a6bceeb929dae090c Mon Sep 17 00:00:00 2001
From: Claus-Peter Huebner <claus-peter.huebner@email.de>
Date: Thu, 20 Jul 2023 23:32:10 +0200
Subject: [PATCH] add Darios TestClient

---
 backend/src/apis/DltConnectorClientTest.ts | 166 +++++++++++++++++++++
 1 file changed, 166 insertions(+)
 create mode 100644 backend/src/apis/DltConnectorClientTest.ts

diff --git a/backend/src/apis/DltConnectorClientTest.ts b/backend/src/apis/DltConnectorClientTest.ts
new file mode 100644
index 000000000..3512a1633
--- /dev/null
+++ b/backend/src/apis/DltConnectorClientTest.ts
@@ -0,0 +1,166 @@
+/* eslint-disable @typescript-eslint/no-unsafe-call */
+/* eslint-disable security/detect-object-injection */
+/* eslint-disable @typescript-eslint/no-unsafe-return */
+/* eslint-disable @typescript-eslint/no-unsafe-assignment */
+
+import { Connection } from '@dbTools/typeorm'
+import { Transaction as DbTransaction } from '@entity/Transaction'
+import { Decimal } from 'decimal.js-light'
+
+import { cleanDB, testEnvironment } from '@test/helpers'
+
+import { CONFIG } from '@/config'
+import { LogError } from '@/server/LogError'
+import { backendLogger as logger } from '@/server/logger'
+
+import { DltConnectorClient } from './DltConnectorClient'
+
+let con: Connection
+
+let testEnv: {
+  con: Connection
+}
+
+// Mock the GraphQLClient
+jest.mock('graphql-request', () => {
+  const originalModule = jest.requireActual('graphql-request')
+
+  let testCursor = 0
+
+  return {
+    __esModule: true,
+    ...originalModule,
+    GraphQLClient: jest.fn().mockImplementation((url: string) => {
+      if (url === 'invalid') {
+        throw new Error('invalid url')
+      }
+      return {
+        // why not using mockResolvedValueOnce or mockReturnValueOnce?
+        // I have tried, but it didn't work and return every time the first value
+        request: jest.fn().mockImplementation(() => {
+          testCursor++
+          if (testCursor === 4) {
+            return Promise.resolve(
+              // invalid, is 33 Bytes long as binary
+              {
+                transmitTransaction: {
+                  dltTransactionIdHex:
+                    '723e3fab62c5d3e2f62fd72ba4e622bcd53eff35262e3f3526327fe41bc516212A',
+                },
+              },
+            )
+          } else if (testCursor === 5) {
+            throw Error('Connection error')
+          } else {
+            return Promise.resolve(
+              // valid, is 32 Bytes long as binary
+              {
+                transmitTransaction: {
+                  dltTransactionIdHex:
+                    '723e3fab62c5d3e2f62fd72ba4e622bcd53eff35262e3f3526327fe41bc51621',
+                },
+              },
+            )
+          }
+        }),
+      }
+    }),
+  }
+})
+
+describe('undefined DltConnectorClient', () => {
+  it('invalid url', () => {
+    CONFIG.DLT_CONNECTOR_URL = 'invalid'
+    CONFIG.DLT_CONNECTOR = true
+    const result = DltConnectorClient.getInstance()
+    expect(result).toBeUndefined()
+    CONFIG.DLT_CONNECTOR_URL = 'http://dlt-connector:6010'
+  })
+
+  it('DLT_CONNECTOR is false', () => {
+    CONFIG.DLT_CONNECTOR = false
+    const result = DltConnectorClient.getInstance()
+    expect(result).toBeUndefined()
+    CONFIG.DLT_CONNECTOR = true
+  })
+})
+
+describe('transmitTransaction, without db connection', () => {
+  const transaction = new DbTransaction()
+  transaction.typeId = 2 // Example transaction type ID
+  transaction.amount = new Decimal('10.00') // Example amount
+  transaction.balanceDate = new Date() // Example creation date
+  transaction.id = 1 // Example transaction ID
+
+  it('cannot query for transaction id', async () => {
+    const result = await DltConnectorClient.getInstance()?.transmitTransaction(transaction)
+    expect(result).toBe(false)
+  })
+})
+
+describe('transmitTransaction', () => {
+  beforeAll(async () => {
+    testEnv = await testEnvironment(logger)
+    con = testEnv.con
+    await cleanDB()
+  })
+
+  afterAll(async () => {
+    await cleanDB()
+    await con.close()
+  })
+
+  const transaction = new DbTransaction()
+  transaction.typeId = 2 // Example transaction type ID
+  transaction.amount = new Decimal('10.00') // Example amount
+  transaction.balanceDate = new Date() // Example creation date
+  transaction.id = 1 // Example transaction ID
+
+  // data needed to let save succeed
+  transaction.memo = "I'm a dummy memo"
+  transaction.userId = 1
+  transaction.userGradidoID = 'dummy gradido id'
+
+  it('cannot find transaction in db', async () => {
+    const result = await DltConnectorClient.getInstance()?.transmitTransaction(transaction)
+    expect(result).toBe(false)
+  })
+
+  it('invalid transaction type', async () => {
+    const localTransaction = new DbTransaction()
+    localTransaction.typeId = 12
+    try {
+      await DltConnectorClient.getInstance()?.transmitTransaction(localTransaction)
+    } catch (e) {
+      expect(e).toMatchObject(
+        new LogError('invalid transaction type id: ' + localTransaction.typeId.toString()),
+      )
+    }
+  })
+
+  it('should transmit the transaction and update the dltTransactionId in the database', async () => {
+    await transaction.save()
+
+    const result = await DltConnectorClient.getInstance()?.transmitTransaction(transaction)
+    expect(result).toBe(true)
+  })
+
+  it('invalid dltTransactionId (maximal 32 Bytes in Binary)', async () => {
+    await transaction.save()
+
+    const result = await DltConnectorClient.getInstance()?.transmitTransaction(transaction)
+    expect(result).toBe(false)
+  })
+})
+
+describe('try transmitTransaction but graphql request failed', () => {
+  it('graphql request should throw', async () => {
+    const transaction = new DbTransaction()
+    transaction.typeId = 2 // Example transaction type ID
+    transaction.amount = new Decimal('10.00') // Example amount
+    transaction.balanceDate = new Date() // Example creation date
+    transaction.id = 1 // Example transaction ID
+    const result = await DltConnectorClient.getInstance()?.transmitTransaction(transaction)
+    expect(result).toBe(false)
+  })
+})