Add TOML config regression tests

packages/e2e/data/invalid-tomls/bad-syntax.toml

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+# Invalid TOML: malformed syntax (missing closing quote)
+client_id = "__E2E_CLIENT_ID__"
+name = "Bad Syntax App
+application_url = "https://example.com"
+embedded = true

packages/e2e/data/invalid-tomls/invalid-prefix.toml

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+# Invalid TOML: app_proxy with invalid prefix value
+client_id = "__E2E_CLIENT_ID__"
+name = "Invalid Prefix App"
+application_url = "https://example.com"
+embedded = true
+
+[app_proxy]
+url = "https://example.com/proxy"
+subpath = "test"
+prefix = "not-a-valid-prefix"

packages/e2e/data/invalid-tomls/invalid-webhook.toml

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+# Invalid TOML: bad webhook config (missing required uri)
+client_id = "__E2E_CLIENT_ID__"
+name = "Invalid Webhook App"
+application_url = "https://example.com"
+embedded = true
+
+[webhooks]
+api_version = "2025-01"
+
+  [[webhooks.subscriptions]]
+  topics = ["products/create"]

packages/e2e/data/invalid-tomls/unknown-section.toml

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+# Invalid TOML: unknown top-level section
+client_id = "__E2E_CLIENT_ID__"
+name = "Unknown Section App"
+application_url = "https://example.com"
+embedded = true
+
+[completely_made_up_section]
+foo = "bar"
+baz = 123

packages/e2e/data/invalid-tomls/wrong-type.toml

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+# Invalid TOML: wrong types for known fields
+client_id = "__E2E_CLIENT_ID__"
+name = "Wrong Type App"
+application_url = "https://example.com"
+embedded = "not-a-boolean"
+
+[access_scopes]
+scopes = 12345
+use_legacy_install_flow = "nope"

packages/e2e/data/valid-app/package.json

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+{
+  "name": "e2e-toml-regression-test",
+  "version": "1.0.0",
+  "private": true
+}

packages/e2e/data/valid-app/shopify.app.toml

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+# Comprehensive shopify.app.toml for E2E regression testing
+# client_id is injected at runtime by the toml-app fixture
+client_id = "__E2E_CLIENT_ID__"
+name = "E2E TOML Regression Test"
+application_url = "https://example.com"
+embedded = true
+
+[access_scopes]
+scopes = "read_products,write_products,read_orders"
+use_legacy_install_flow = false
+
+[access.admin]
+direct_api_mode = "online"
+embedded_app_direct_api_access = true
+
+[auth]
+redirect_urls = [
+  "https://example.com/auth/callback",
+  "https://example.com/auth/shopify/callback",
+]
+
+[webhooks]
+api_version = "2025-01"
+
+  [[webhooks.subscriptions]]
+  topics = ["products/create"]
+  uri = "https://example.com/webhooks/products/create"
+
+  [[webhooks.subscriptions]]
+  topics = ["orders/create"]
+  uri = "https://example.com/webhooks/orders/create"
+
+[app_proxy]
+url = "https://example.com/proxy"
+subpath = "e2e-test"
+prefix = "apps"
+
+[pos]
+embedded = false
+
+[build]
+automatically_update_urls_on_dev = true
+include_config_on_deploy = true
+
+[app_preferences]
+url = "https://example.com/preferences"

packages/e2e/setup/toml-app.ts

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+/* eslint-disable no-restricted-imports */
+import {authFixture} from './auth.js'
+import * as path from 'path'
+import * as fs from 'fs'
+import {fileURLToPath} from 'url'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
+
+const FIXTURE_DIR = path.join(__dirname, '../data/valid-app')
+
+/**
+ * Test fixture that copies the full-toml fixture into a temp directory,
+ * injects the real client_id, and exposes the path to tests.
+ */
+export const tomlAppFixture = authFixture.extend<{tomlAppDir: string}>({
+  tomlAppDir: async ({env, authLogin: _authLogin}, use) => {
+    const appDir = fs.mkdtempSync(path.join(env.tempDir, 'toml-app-'))
+
+    // Copy fixture files
+    for (const file of fs.readdirSync(FIXTURE_DIR)) {
+      fs.copyFileSync(path.join(FIXTURE_DIR, file), path.join(appDir, file))
+    }
+
+    // Inject real client_id
+    const tomlPath = path.join(appDir, 'shopify.app.toml')
+    const toml = fs.readFileSync(tomlPath, 'utf8')
+    fs.writeFileSync(tomlPath, toml.replace('__E2E_CLIENT_ID__', env.clientId))
+
+    await use(appDir)
+
+    fs.rmSync(appDir, {recursive: true, force: true})
+  },
+})

packages/e2e/tests/toml-config-invalid.spec.ts

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+/* eslint-disable no-console */
+/* eslint-disable no-restricted-imports */
+import {authFixture as test} from '../setup/auth.js'
+import {requireEnv} from '../setup/env.js'
+import {expect} from '@playwright/test'
+import * as path from 'path'
+import * as fs from 'fs'
+import {fileURLToPath} from 'url'
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+const INVALID_TOMLS_DIR = path.join(__dirname, '../data/invalid-tomls')
+
+const invalidTomls = fs.readdirSync(INVALID_TOMLS_DIR).filter((file) => file.endsWith('.toml'))
+
+test.describe('TOML config invalid', () => {
+  for (const tomlFile of invalidTomls) {
+    const label = tomlFile.replace('.toml', '')
+
+    test(`deploy rejects invalid toml: ${label}`, async ({cli, env}) => {
+      requireEnv(env, 'clientId')
+
+      // Set up temp dir with invalid toml + minimal package.json
+      const appDir = fs.mkdtempSync(path.join(env.tempDir, `invalid-toml-${label}-`))
+      try {
+        const toml = fs
+          .readFileSync(path.join(INVALID_TOMLS_DIR, tomlFile), 'utf8')
+          .replace('__E2E_CLIENT_ID__', env.clientId)
+        fs.writeFileSync(path.join(appDir, 'shopify.app.toml'), toml)
+        fs.writeFileSync(
+          path.join(appDir, 'package.json'),
+          JSON.stringify({name: `invalid-${label}`, version: '1.0.0', private: true}),
+        )
+
+        const result = await cli.exec(['app', 'deploy', '--path', appDir, '--force'], {
+          timeout: 2 * 60 * 1000,
+        })
+        const output = result.stdout + result.stderr
+        console.log(`[${label}] exit code: ${result.exitCode}\n[${label}] output:\n${output}`)
+        expect(result.exitCode, `expected deploy to fail for ${label}, but it succeeded:\n${output}`).not.toBe(0)
+      } finally {
+        fs.rmSync(appDir, {recursive: true, force: true})
+      }
+    })
+  }
+})

packages/e2e/tests/toml-config.spec.ts

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+/* eslint-disable no-console */
+import {tomlAppFixture as test} from '../setup/toml-app.js'
+import {requireEnv} from '../setup/env.js'
+import {expect} from '@playwright/test'
+
+test.describe('TOML config regression', () => {
+  test('deploy succeeds with fully populated toml', async ({cli, env, tomlAppDir}) => {
+    requireEnv(env, 'clientId')
+
+    const result = await cli.exec(['app', 'deploy', '--path', tomlAppDir, '--force'], {
+      timeout: 5 * 60 * 1000,
+    })
+    const output = result.stdout + result.stderr
+    expect(result.exitCode, `deploy failed:\n${output}`).toBe(0)
+  })
+
+  test('dev starts with fully populated toml', async ({cli, env, tomlAppDir}) => {
+    test.setTimeout(5 * 60 * 1000)
+    requireEnv(env, 'clientId', 'storeFqdn')
+
+    const proc = await cli.spawn(['app', 'dev', '--path', tomlAppDir], {
+      env: {CI: ''},
+    })
+
+    try {
+      await proc.waitForOutput('Ready, watching for changes in your app', 3 * 60 * 1000)
+
+      const output = proc.getOutput()
+      expect(output).toContain('q')
+
+      proc.sendKey('q')
+      const exitCode = await proc.waitForExit(30_000)
+      expect(exitCode, `dev exited with non-zero code. Output:\n${proc.getOutput()}`).toBe(0)
+    } catch (error) {
+      const captured = proc.getOutput()
+      console.error(`[toml-config dev] Captured PTY output:\n${captured}`)
+      throw error
+    } finally {
+      proc.kill()
+    }
+  })
+})