diff --git a/packages/server/src/api/routes/tests/attachment.spec.ts b/packages/server/src/api/routes/tests/attachment.spec.ts
index e230b0688a..aa02ea898e 100644
--- a/packages/server/src/api/routes/tests/attachment.spec.ts
+++ b/packages/server/src/api/routes/tests/attachment.spec.ts
@@ -29,7 +29,7 @@ describe("/api/applications/:appId/sync", () => {
         let resp = (await config.api.attachment.process(
           "ohno.exe",
           Buffer.from([0]),
-          { expectStatus: 400 }
+          { status: 400 }
         )) as unknown as APIError
         expect(resp.message).toContain("invalid extension")
       })
@@ -40,7 +40,7 @@ describe("/api/applications/:appId/sync", () => {
         let resp = (await config.api.attachment.process(
           "OHNO.EXE",
           Buffer.from([0]),
-          { expectStatus: 400 }
+          { status: 400 }
         )) as unknown as APIError
         expect(resp.message).toContain("invalid extension")
       })
@@ -51,7 +51,7 @@ describe("/api/applications/:appId/sync", () => {
         undefined as any,
         undefined as any,
         {
-          expectStatus: 400,
+          status: 400,
         }
       )) as unknown as APIError
       expect(resp.message).toContain("No file provided")
diff --git a/packages/server/src/tests/utilities/api/application.ts b/packages/server/src/tests/utilities/api/application.ts
index f215a98edb..da3d7cefd8 100644
--- a/packages/server/src/tests/utilities/api/application.ts
+++ b/packages/server/src/tests/utilities/api/application.ts
@@ -5,16 +5,11 @@ import {
   type FetchAppDefinitionResponse,
   type FetchAppPackageResponse,
 } from "@budibase/types"
-import TestConfiguration from "../TestConfiguration"
 import { Expectations, TestAPI } from "./base"
 import { AppStatus } from "../../../db/utils"
 import { constants } from "@budibase/backend-core"
 
 export class ApplicationAPI extends TestAPI {
-  constructor(config: TestConfiguration) {
-    super(config)
-  }
-
   create = async (
     app: CreateAppRequest,
     expectations?: Expectations
diff --git a/packages/server/src/tests/utilities/api/attachment.ts b/packages/server/src/tests/utilities/api/attachment.ts
index a466f1a67e..bb33ef04bb 100644
--- a/packages/server/src/tests/utilities/api/attachment.ts
+++ b/packages/server/src/tests/utilities/api/attachment.ts
@@ -1,35 +1,16 @@
-import {
-  APIError,
-  Datasource,
-  ProcessAttachmentResponse,
-} from "@budibase/types"
-import TestConfiguration from "../TestConfiguration"
-import { TestAPI } from "./base"
+import { ProcessAttachmentResponse } from "@budibase/types"
+import { Expectations, TestAPI } from "./base"
 import fs from "fs"
 
 export class AttachmentAPI extends TestAPI {
-  constructor(config: TestConfiguration) {
-    super(config)
-  }
-
   process = async (
     name: string,
     file: Buffer | fs.ReadStream | string,
-    { expectStatus } = { expectStatus: 200 }
+    expectations?: Expectations
   ): Promise<ProcessAttachmentResponse> => {
-    const result = await this.request
-      .post(`/api/attachments/process`)
-      .attach("file", file, name)
-      .set(this.config.defaultHeaders())
-
-    if (result.statusCode !== expectStatus) {
-      throw new Error(
-        `Expected status ${expectStatus} but got ${
-          result.statusCode
-        }, body: ${JSON.stringify(result.body)}`
-      )
-    }
-
-    return result.body
+    return await this._post(`/api/attachments/process`, {
+      files: { file: { name, file } },
+      expectations,
+    })
   }
 }
diff --git a/packages/server/src/tests/utilities/api/base.ts b/packages/server/src/tests/utilities/api/base.ts
index 8325c1caf6..9a6ff2e6ca 100644
--- a/packages/server/src/tests/utilities/api/base.ts
+++ b/packages/server/src/tests/utilities/api/base.ts
@@ -1,6 +1,6 @@
-import exp from "constants"
 import TestConfiguration from "../TestConfiguration"
 import { SuperTest, Test } from "supertest"
+import { ReadStream } from "fs"
 
 type Headers = Record<string, string | string[] | undefined>
 
@@ -9,6 +9,22 @@ export interface TestAPIOpts {
   status?: number
 }
 
+export interface AttachedFile {
+  name: string
+  file: Buffer | ReadStream | string
+}
+
+function isAttachedFile(file: any): file is AttachedFile {
+  if (file === undefined) {
+    return false
+  }
+  const attachedFile = file as AttachedFile
+  return (
+    Object.hasOwnProperty.call(attachedFile, "file") &&
+    Object.hasOwnProperty.call(attachedFile, "name")
+  )
+}
+
 export interface Expectations {
   status?: number
   contentType?: string | RegExp
@@ -21,7 +37,10 @@ export interface RequestOpts {
   query?: Record<string, string | undefined>
   body?: Record<string, any>
   fields?: Record<string, any>
-  files?: Record<string, any>
+  files?: Record<
+    string,
+    Buffer | ReadStream | string | AttachedFile | undefined
+  >
   expectations?: Expectations
 }
 
@@ -66,8 +85,8 @@ export abstract class TestAPI {
       headers = {},
       query = {},
       body,
-      fields,
-      files,
+      fields = {},
+      files = {},
       expectations,
     } = opts || {}
     const { status = 200, contentType = /json/ } = expectations || {}
@@ -89,30 +108,23 @@ export abstract class TestAPI {
     if (body) {
       request = request.send(body)
     }
-    if (fields) {
-      for (const [key, value] of Object.entries(fields)) {
-        request = request.field(key, value)
-      }
+    for (const [key, value] of Object.entries(fields)) {
+      request = request.field(key, value)
     }
-    if (files) {
-      for (const [key, value] of Object.entries(files)) {
-        request = request.attach(key, value)
+
+    for (const [key, value] of Object.entries(files)) {
+      if (isAttachedFile(value)) {
+        request = request.attach(key, value.file, value.name)
+      } else {
+        request = request.attach(key, value as any)
       }
     }
     if (contentType && status !== 204) {
-      if (contentType instanceof RegExp) {
-        request = request.expect("Content-Type", contentType)
-      } else {
-        request = request.expect("Content-Type", contentType)
-      }
+      request = request.expect("Content-Type", contentType as any)
     }
     if (expectations?.headers) {
       for (const [key, value] of Object.entries(expectations.headers)) {
-        if (value instanceof RegExp) {
-          request = request.expect(key, value)
-        } else {
-          request = request.expect(key, value)
-        }
+        request = request.expect(key, value as any)
       }
     }