feat(ai): add Z.ai image generation (#37780)
Co-authored-by: Aiden Cline <rekram1-node@users.noreply.github.com>
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8 changed files with 391 additions and 2 deletions
28
packages/ai/test/fixtures/recordings/zai-images/generates-an-image.json
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28
packages/ai/test/fixtures/recordings/zai-images/generates-an-image.json
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@ -0,0 +1,28 @@
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{
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"version": 1,
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"metadata": {
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"tags": ["prefix:zai-images", "provider:zai", "protocol:zai-images"],
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"name": "zai-images/generates-an-image",
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"recordedAt": "2026-07-19T16:03:55.761Z"
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},
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"interactions": [
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{
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"transport": "http",
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"request": {
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"method": "POST",
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"url": "https://api.z.ai/api/paas/v4/images/generations",
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"headers": {
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"content-type": "application/json"
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},
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"body": "{\"model\":\"cogview-4-250304\",\"prompt\":\"A simple flat red circle centered on a plain white background.\",\"size\":\"1024x1024\",\"quality\":\"standard\",\"user_id\":\"opencode-image-test\"}"
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},
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"response": {
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"status": 200,
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"headers": {
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"content-type": "application/json; charset=UTF-8"
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},
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"body": "{\"created\":1784477028,\"data\":[{\"url\":\"https://mfile.z.ai/1784477035500-43574eab2b6e402da9063d6ac22dfefb.png?ufileattname=202607200003482062c3bba9b04f7d_watermark.png\"}],\"id\":\"202607200003482062c3bba9b04f7d\",\"request_id\":\"202607200003482062c3bba9b04f7d\"}"
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}
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}
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]
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}
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@ -6,7 +6,7 @@ import {
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type ImageRequestFor,
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type ImageRoute,
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} from "../src"
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import { Google, OpenAI, XAI } from "../src/providers"
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import { Google, OpenAI, XAI, ZAI } from "../src/providers"
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type GoogleLikeOptions = {
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readonly aspectRatio?: "1:1" | "16:9"
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@ -99,6 +99,20 @@ Image.generate({ model: xai, prompt: "A lighthouse", options: { n: "2" } })
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// @ts-expect-error Known xAI string options retain their value kind.
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Image.generate({ model: xai, prompt: "A lighthouse", options: { resolution: 2 } })
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const zai = ZAI.configure({ apiKey: "test" }).image("any-model-id")
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// @ts-expect-error Image generation options are request-scoped, not provider configuration.
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ZAI.configure({ image: { options: { quality: "hd" } } })
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Image.generate({
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model: zai,
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prompt: "A lighthouse",
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options: { quality: "future-quality", userID: "user-123", future_option: true },
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})
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Image.generate({ model: zai, prompt: "A lighthouse", options: { user_id: "raw-user" } })
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// @ts-expect-error Known Z.ai string options retain their value kind.
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Image.generate({ model: zai, prompt: "A lighthouse", options: { quality: 1 } })
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// @ts-expect-error Known Z.ai user IDs retain their value kind.
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Image.generate({ model: zai, prompt: "A lighthouse", options: { userID: 1 } })
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declare const generic: ImageModel<ImageOptions>
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Image.generate({ model: generic, prompt: "A lighthouse", options: { arbitrary: true } })
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32
packages/ai/test/provider/zai-images.recorded.test.ts
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packages/ai/test/provider/zai-images.recorded.test.ts
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import { describe, expect } from "bun:test"
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import { Effect } from "effect"
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import { Image } from "../../src"
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import { ZAI } from "../../src/providers"
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import { recordedTests } from "../recorded-test"
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const model = ZAI.configure({ apiKey: process.env.ZAI_API_KEY ?? "fixture" }).image("cogview-4-250304")
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const recorded = recordedTests({
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prefix: "zai-images",
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provider: "zai",
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protocol: "zai-images",
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requires: ["ZAI_API_KEY"],
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})
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describe("Z.ai Images recorded", () => {
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recorded.effect("generates an image", () =>
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Effect.gen(function* () {
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const response = yield* Image.generate({
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model,
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prompt: "A simple flat red circle centered on a plain white background.",
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options: { size: "1024x1024", quality: "standard", userID: "opencode-image-test" },
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})
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expect(response.images).toHaveLength(1)
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expect(response.image?.mediaType).toBe("application/octet-stream")
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expect(response.image?.data).toBeString()
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expect(response.image?.data).toStartWith("https://")
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expect(response.providerMetadata?.zai).toBeDefined()
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}),
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)
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})
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130
packages/ai/test/provider/zai-images.test.ts
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130
packages/ai/test/provider/zai-images.test.ts
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@ -0,0 +1,130 @@
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import { describe, expect } from "bun:test"
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import { Effect, Layer } from "effect"
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import { HttpClientRequest } from "effect/unstable/http"
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import { Image, ImageClient } from "../../src"
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import { ZAI } from "../../src/providers"
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import { it } from "../lib/effect"
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import { dynamicResponse, fixedResponse } from "../lib/http"
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describe("Z.ai Images", () => {
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it.effect("generates through the Z.ai Images API", () =>
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Effect.gen(function* () {
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const response = yield* Image.generate({
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model: ZAI.configure({
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apiKey: "test",
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baseURL: "https://api.z.ai.test/api/paas/v4",
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headers: { "x-default": "yes" },
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http: { body: { configured: true, quality: "configured" }, query: { trace: "default" } },
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}).image("glm-image"),
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prompt: "A red circle on a white background",
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options: {
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quality: "hd",
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userID: "alias-user",
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user_id: "raw-user",
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future_option: true,
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},
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http: {
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headers: { "x-request": "yes" },
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query: { trace: "request" },
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body: { quality: "final", user_id: "final-user" },
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},
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})
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expect(response.images).toHaveLength(1)
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expect(response.image?.mediaType).toBe("application/octet-stream")
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expect(response.image?.data).toBe("https://cdn.z.ai/generated.png")
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expect(response.providerMetadata).toEqual({
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zai: {
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created: 1_760_335_349,
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id: "generation-1",
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requestID: "request-1",
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contentFilter: [{ role: "future-role", level: 4.5 }],
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},
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})
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}).pipe(
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Effect.provide(
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ImageClient.layer.pipe(
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Layer.provide(
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dynamicResponse((input) =>
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Effect.gen(function* () {
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const request = yield* HttpClientRequest.toWeb(input.request).pipe(Effect.orDie)
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expect(request.url).toBe("https://api.z.ai.test/api/paas/v4/images/generations?trace=request")
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expect(request.headers.get("authorization")).toBe("Bearer test")
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expect(request.headers.get("x-default")).toBe("yes")
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expect(request.headers.get("x-request")).toBe("yes")
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expect(JSON.parse(input.text)).toEqual({
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model: "glm-image",
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prompt: "A red circle on a white background",
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quality: "final",
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user_id: "final-user",
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future_option: true,
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configured: true,
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})
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return input.respond(
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JSON.stringify({
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created: 1_760_335_349,
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id: "generation-1",
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request_id: "request-1",
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data: [{ url: "https://cdn.z.ai/generated.png" }],
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content_filter: [{ role: "future-role", level: 4.5 }],
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}),
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{ headers: { "content-type": "application/json" } },
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)
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}),
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),
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),
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),
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),
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),
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)
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it.effect("lets raw native options override aliases", () =>
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Image.generate({
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model: ZAI.configure({ apiKey: "test" }).image("model"),
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prompt: "test",
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options: { quality: "future-quality", userID: "x", user_id: "raw-user" },
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}).pipe(
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Effect.provide(
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ImageClient.layer.pipe(
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Layer.provide(
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dynamicResponse((input) => {
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expect(JSON.parse(input.text)).toMatchObject({ quality: "future-quality", user_id: "raw-user" })
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return Effect.succeed(
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input.respond(JSON.stringify({ data: [{ url: "https://example.test/image.jpg" }] }), {
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headers: { "content-type": "application/json" },
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}),
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)
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}),
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),
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),
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),
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),
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)
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it.effect("rejects invalid response structures", () =>
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Effect.gen(function* () {
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const model = ZAI.configure({ apiKey: "test" }).image("model")
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const payloads = [
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{},
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{ data: [] },
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{ data: [{ b64_json: "image" }] },
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{ data: [{ url: 1 }] },
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{ data: [{ url: "https://example.test/image.jpg" }], content_filter: [{ role: 1, level: "high" }] },
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]
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yield* Effect.forEach(payloads, (payload) =>
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Image.generate({ model, prompt: "test" }).pipe(
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Effect.provide(
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ImageClient.layer.pipe(
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Layer.provide(
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fixedResponse(JSON.stringify(payload), { headers: { "content-type": "application/json" } }),
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),
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),
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),
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Effect.flip,
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Effect.tap((error) => Effect.sync(() => expect(error.reason._tag).toBe("InvalidProviderOutput"))),
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),
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)
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}),
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)
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})
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