Tests

packages/server/__mocks__/oracledb.ts

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+module OracleDbMock {
+  // mock execute
+  const execute = jest.fn(() => ({
+    rows: [
+      {
+        a: "string",
+        b: 1,
+      },
+    ],
+  }))
+
+  const close = jest.fn()
+
+  // mock connection
+  function Connection() {}
+  Connection.prototype.execute = execute
+  Connection.prototype.close = close
+
+  // mock oracledb
+  const oracleDb: any = {}
+  oracleDb.getConnection = jest.fn(() => {
+    // @ts-ignore
+    return new Connection()
+  })
+
+  // expose mocks
+  oracleDb.executeMock = execute
+  oracleDb.closeMock = close
+
+  module.exports = oracleDb
+}

packages/server/src/integrations/tests/oracle.spec.js

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+const oracledb = require("oracledb")
+const OracleIntegration = require("../oracle")
+jest.mock("oracledb")
+
+class TestConfiguration {
+  constructor(config = {}) {
+    this.integration = new OracleIntegration.integration(config) 
+  }
+}
+
+const options = { autoCommit: true }
+
+describe("Oracle Integration", () => {
+  let config 
+
+  beforeEach(() => {
+    jest.clearAllMocks()
+    config = new TestConfiguration()
+  })
+
+  afterEach(() => {
+    expect(oracledb.closeMock).toHaveBeenCalled()
+    expect(oracledb.closeMock).toHaveBeenCalledTimes(1)
+  })
+
+  it("calls the create method with the correct params", async () => {
+    const sql = "insert into users (name, age) values ('Joe', 123);"
+    await config.integration.create({
+      sql
+    })
+    expect(oracledb.executeMock).toHaveBeenCalledWith(sql, [], options)
+    expect(oracledb.executeMock).toHaveBeenCalledTimes(1)
+  })
+
+  it("calls the read method with the correct params", async () => {
+    const sql = "select * from users;"
+    await config.integration.read({
+      sql
+    })
+    expect(oracledb.executeMock).toHaveBeenCalledWith(sql, [], options)
+    expect(oracledb.executeMock).toHaveBeenCalledTimes(1)
+  })
+
+  it("calls the update method with the correct params", async () => {
+    const sql = "update table users set name = 'test';"
+    const response = await config.integration.update({ 
+      sql
+    })
+    expect(oracledb.executeMock).toHaveBeenCalledWith(sql, [], options)
+    expect(oracledb.executeMock).toHaveBeenCalledTimes(1)
+  })
+
+  it("calls the delete method with the correct params", async () => {
+    const sql = "delete from users where name = 'todelete';"
+    await config.integration.delete({
+      sql
+    })
+    expect(oracledb.executeMock).toHaveBeenCalledWith(sql, [], options)
+    expect(oracledb.executeMock).toHaveBeenCalledTimes(1)
+  })
+
+  describe("no rows returned", () => {
+    beforeEach(() => {
+      oracledb.executeMock.mockImplementation(() => ({ rows: [] }))
+    })
+
+    it("returns the correct response when the create response has no rows", async () => {
+    const sql = "insert into users (name, age) values ('Joe', 123);"
+      const response = await config.integration.create({ 
+        sql
+      })
+      expect(response).toEqual([{ created: true }])
+      expect(oracledb.executeMock).toHaveBeenCalledTimes(1)
+    })
+
+    it("returns the correct response when the update response has no rows", async () => {
+      const sql = "update table users set name = 'test';"
+      const response = await config.integration.update({ 
+        sql
+      })
+      expect(response).toEqual([{ updated: true }])
+      expect(oracledb.executeMock).toHaveBeenCalledTimes(1)
+    })
+
+    it("returns the correct response when the delete response has no rows", async () => {
+      const sql = "delete from users where name = 'todelete';"
+      const response = await config.integration.delete({ 
+        sql
+      })
+      expect(response).toEqual([{ deleted: true }])
+      expect(oracledb.executeMock).toHaveBeenCalledTimes(1)
+    })
+  })
+})