test(cloudtrail): cover comma-separated input splitting at the tool boundary

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LJV2dCcAYvf1JuxquCMZAd

Author: waleedlatif1

apps/sim/tools/cloudtrail/operation-input.test.ts

@@ -0,0 +1,56 @@
+/**
+ * @vitest-environment node
+ *
+ * The CloudTrail block collects `trailNameList`, `resourceIdList`, and `queryParameters` as
+ * comma-separated strings, while their contracts require arrays. `operation.input` is the seam
+ * that converts them, and it runs before contract validation, so these fields must arrive at the
+ * contract already split. Regressing this would 400 every request that uses them.
+ */
+import { describe, expect, it } from 'vitest'
+import { describeTrailsTool } from '@/tools/cloudtrail/describe_trails'
+import { listTagsTool } from '@/tools/cloudtrail/list_tags'
+import { startQueryTool } from '@/tools/cloudtrail/start_query'
+
+const CONNECTION = {
+  awsRegion: 'us-east-1',
+  awsAccessKeyId: 'AKIAIOSFODNN7EXAMPLE',
+  awsSecretAccessKey: 'secret',
+}
+
+const TRAIL_ARN = 'arn:aws:cloudtrail:us-east-1:123456789012:trail/audit-trail'
+
+describe('cloudtrail operation input', () => {
+  it('splits comma-separated trail names for describe_trails', () => {
+    const input = describeTrailsTool.operation.input({
+      ...CONNECTION,
+      trailNameList: 'audit-trail, security-trail',
+    })
+
+    expect(input.trailNameList).toEqual(['audit-trail', 'security-trail'])
+  })
+
+  it('omits trailNameList entirely when it is blank', () => {
+    const input = describeTrailsTool.operation.input({ ...CONNECTION, trailNameList: '  ' })
+
+    expect(input.trailNameList).toBeUndefined()
+  })
+
+  it('splits comma-separated resource ARNs for list_tags', () => {
+    const input = listTagsTool.operation.input({
+      ...CONNECTION,
+      resourceIdList: `${TRAIL_ARN},${TRAIL_ARN}`,
+    })
+
+    expect(input.resourceIdList).toEqual([TRAIL_ARN, TRAIL_ARN])
+  })
+
+  it('splits comma-separated query template parameters for start_query', () => {
+    const input = startQueryTool.operation.input({
+      ...CONNECTION,
+      queryAlias: 'top-errors',
+      queryParameters: 'us-east-1, 2026-01-01',
+    })
+
+    expect(input.queryParameters).toEqual(['us-east-1', '2026-01-01'])
+  })
+})