fix(workflows): sample aliased input types as their canonical type in mock payloads

Author: waleedlatif1

apps/sim/lib/workflows/triggers/run-options.test.ts

@@ -115,6 +115,20 @@ describe('file inputs through workflow run options', () => {
   })
 })
 
+describe('mock payloads for aliased field types', () => {
+  it('samples a json field as an object the run validation accepts', () => {
+    const [option] = resolveTriggerRunOptions({
+      start: {
+        type: 'start_trigger',
+        name: 'Start',
+        subBlocks: { inputFormat: { value: [{ name: 'payload', type: 'json' }] } },
+      },
+    })
+    expect(option.mockPayload).toEqual({ payload: {} })
+    expect(validateTriggerInput(option, option.mockPayload)).toEqual({ ok: true })
+  })
+})
+
 describe('workflow input discovery schemas', () => {
   it('matches optional defaults and describes stored-file and upload alternatives', () => {
     const [option] = resolveTriggerRunOptions({

apps/sim/lib/workflows/triggers/run-options.ts

@@ -7,6 +7,7 @@ import {
   normalizeInputFormatValue,
   parseInputFormatFiles,
 } from '@/lib/workflows/input-format'
+import { canonicalInputFormatFieldType } from '@/lib/workflows/input-format-schema'
 import { generateWorkflowInputShape } from '@/lib/workflows/input-schema'
 import {
   getLegacyStarterMode,
@@ -128,7 +129,7 @@ function triggerOutputsToJsonSchema(outputs: Record<string, unknown>): Record<st
 }
 
 function mockValueForType(type: string | undefined, name: string): unknown {
-  switch (type) {
+  switch (canonicalInputFormatFieldType(type)) {
     case 'number':
       return 42
     case 'boolean':