Add maestro E2E test for purchase through paywall

Made-with: Cursor

Author: ajpallares

e2e-tests/maestro/config.yaml

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+# config.yaml
+
+executionOrder:
+  continueOnFailure: false
+
+flows:
+  - e2e_tests/*

e2e-tests/maestro/e2e_tests/purchase_through_paywall.yaml

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+# This flow tests the purchase through paywall flow.
+# It navigates to the purchase screen, verifies initial entitlements,
+# presents the paywall, makes a purchase, and verifies entitlements update.
+
+appId: com.revenuecat.automatedsdktests
+name: Purchase through paywall
+
+---
+- clearState
+- pressKey: home
+- launchApp
+- takeScreenshot: purchase_through_paywall - Initial state after launch
+- extendedWaitUntil:
+    visible: "Test Cases"
+    timeout: 30000
+- takeScreenshot: purchase_through_paywall - After Test Cases visible
+- assertVisible: "Test Cases"
+- tapOn:
+    text: "Purchase through paywall"
+- extendedWaitUntil:
+    visible: "Entitlements: none"
+    timeout: 15000
+- assertVisible: "Entitlements: none"
+- assertVisible: "Present Paywall"
+- tapOn:
+    text: "Present Paywall"
+- assertVisible: "Paywall V2"
+- tapOn:
+    text: "Yearly"
+- tapOn:
+    text: "Continue"
+- runFlow:
+    file: ../utils/confirm_purchase.yaml
+- extendedWaitUntil:
+    visible: "Entitlements: pro"
+    timeout: 15000
+- assertVisible: "Entitlements: pro"

e2e-tests/maestro/utils/confirm_purchase.yaml

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+# This flow handles the Test Store purchase confirmation.
+
+appId: com.revenuecat.automatedsdktests
+name: Confirm purchase - Test Store Purchase Alert
+
+---
+- assertVisible: "Test.*Purchase"
+- tapOn:
+    text: "(?i)test valid purchase"