test(client-s3): integration for config 'authSchemePreference'

clients/client-s3/package.json

@@ -15,6 +15,8 @@
     "test": "yarn g:vitest run",
     "test:browser": "node ./test/browser-build/esbuild && yarn g:vitest run -c vitest.config.browser.ts",
     "test:browser:watch": "node ./test/browser-build/esbuild && yarn g:vitest watch -c vitest.config.browser.ts",
+    "test:integration": "yarn g:vitest run -c vitest.config.integ.ts",
+    "test:integration:watch": "yarn g:vitest watch -c vitest.config.integ.ts",
     "test:e2e": "yarn g:vitest run -c vitest.config.e2e.ts && yarn test:browser",
     "test:e2e:watch": "yarn g:vitest watch -c vitest.config.e2e.ts",
     "test:watch": "yarn g:vitest watch"

clients/client-s3/test/integ/authSchemePreference.integ.spec.ts

@@ -0,0 +1,45 @@
+import { FinalizeRequestMiddleware } from "@smithy/types";
+import { describe, expect, test as it } from "vitest";
+
+import { S3 } from "@aws-sdk/client-s3";
+import "@aws-sdk/signature-v4-crt";
+
+describe("authSchemePreference", () => {
+  const credentials = { accessKeyId: "key", secretAccessKey: "secret" };
+  const Bucket = `arn:aws:s3-outposts:us-west-2:123456789012:outpost/op-01234567890123456/accesspoint/abc-111`;
+  const Key = "key";
+  const Body = "body";
+
+  const SIGNATURE_PREFIX: Record<string, string> = {
+    sigv4: "AWS4-HMAC-SHA256",
+    sigv4a: "AWS4-ECDSA-P256-SHA256",
+  };
+
+  const interceptorMiddleware: FinalizeRequestMiddleware<any, any> = (next, context) => (args) => {
+    // middleware intercept the request and return it early
+    const request = args.request;
+    return Promise.resolve({
+      output: { $metadata: { attempts: 0, httpStatusCode: 200 }, request, context },
+      response: {},
+    });
+  };
+
+  const getAuthorizationHeader = (headers: Record<string, string>) =>
+    headers["authorization"] || headers["Authorization"];
+
+  it.each([
+    ["sigv4a", undefined],
+    ["sigv4a", ["sigv3"]],
+    ["sigv4", ["sigv4"]],
+    ["sigv4", ["sigv4", "sigv4a"]],
+    ["sigv4a", ["sigv4a"]],
+    ["sigv4a", ["sigv4a", "sigv4"]],
+  ])("selects '%s' when authSchemePreference: %s", async (output, authSchemePreference) => {
+    const client = new S3({ credentials, authSchemePreference });
+    client.middlewareStack.add(interceptorMiddleware, { step: "finalizeRequest", priority: "low" });
+    const result: any = await client.putObject({ Bucket, Key, Body });
+
+    const authorizationHeader = getAuthorizationHeader(result.request.headers);
+    expect(authorizationHeader.startsWith(SIGNATURE_PREFIX[output])).toBe(true);
+  });
+});

clients/client-s3/vitest.config.integ.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    include: ["**/*.integ.spec.ts"],
+    environment: "node",
+  },
+});