Appium python expert

Appium Python Expert

Specialist in mobile E2E test automation using Appium 2.x + Python + pytest. Covers Android (UIAutomator2) and iOS (XCUITest), Page Object Model, Allure reports, gestures táctiles, Appium Inspector y CI/CD integration.

---

Stack de referencia

Layer	Tool
Appium	2.x (drivers plugin-based)
Client	Appium-Python-Client >= 3.x
Test runner	pytest + pytest-html
Reporting	allure-pytest + Allure CLI
Android driver	uiautomator2
iOS driver	xcuitest
CI/CD	GitHub Actions, Jenkins
Utilities	python-dotenv
Inspector	Appium Inspector (desktop app)

---

Project Structure (reference)

project/
├── tests/
│   ├── android/
│   │   └── test_login_android.py
│   ├── ios/
│   │   └── test_login_ios.py
│   └── conftest.py
├── pages/
│   ├── base_page.py       ← gestures incluidos aquí
│   ├── login_page.py
│   └── home_page.py
├── config/
│   ├── capabilities_android.py
│   └── capabilities_ios.py
├── utils/
│   └── helpers.py
├── allure-results/        ← generado por pytest
├── allure-report/         ← generado por allure CLI
├── .env
├── pytest.ini
├── requirements.txt
└── README.md

---

Quick-start guide

1. Install Appium 2.x and drivers

npm install -g appium@latest
appium driver install uiautomator2
appium driver install xcuitest
appium driver list --installed   # verify

2. Python dependencies (requirements.txt)

Appium-Python-Client>=3.1.0
pytest>=8.0.0
pytest-html>=4.0.0
python-dotenv>=1.0.0
allure-pytest>=2.13.0

Allure también requiere el CLI separado: ver sección Allure Reports más abajo.

pip install -r requirements.txt

3. Environment variables (.env)

ANDROID_APP_PATH=/abs/path/to/app.apk
IOS_APP_PATH=/abs/path/to/app.ipa
APPIUM_HOST=127.0.0.1
APPIUM_PORT=4723
ANDROID_DEVICE_NAME=emulator-5554
IOS_DEVICE_NAME=iPhone 15
IOS_PLATFORM_VERSION=17.0

---

Capabilities

Android (config/capabilities_android.py)

import os
from dotenv import load_dotenv

load_dotenv()

ANDROID_CAPS = {
    "platformName": "Android",
    "appium:automationName": "UiAutomator2",
    "appium:deviceName": os.getenv("ANDROID_DEVICE_NAME", "emulator-5554"),
    "appium:app": os.getenv("ANDROID_APP_PATH"),
    "appium:noReset": False,
    "appium:newCommandTimeout": 120,
    "appium:autoGrantPermissions": True,
}

iOS (config/capabilities_ios.py)

import os
from dotenv import load_dotenv

load_dotenv()

IOS_CAPS = {
    "platformName": "iOS",
    "appium:automationName": "XCUITest",
    "appium:deviceName": os.getenv("IOS_DEVICE_NAME", "iPhone 15"),
    "appium:platformVersion": os.getenv("IOS_PLATFORM_VERSION", "17.0"),
    "appium:app": os.getenv("IOS_APP_PATH"),
    "appium:noReset": False,
    "appium:newCommandTimeout": 120,
    "appium:autoAcceptAlerts": True,
}

---

conftest.py (driver fixture)

import pytest
from appium import webdriver
from appium.options import AppiumOptions
from config.capabilities_android import ANDROID_CAPS
from config.capabilities_ios import IOS_CAPS
import os

APPIUM_URL = f"http://{os.getenv('APPIUM_HOST','127.0.0.1')}:{os.getenv('APPIUM_PORT','4723')}"

def get_driver(platform: str):
    caps = ANDROID_CAPS if platform == "android" else IOS_CAPS
    options = AppiumOptions().load_capabilities(caps)
    return webdriver.Remote(APPIUM_URL, options=options)

@pytest.fixture(scope="function")
def android_driver():
    driver = get_driver("android")
    yield driver
    driver.quit()

@pytest.fixture(scope="function")
def ios_driver():
    driver = get_driver("ios")
    yield driver
    driver.quit()

---

Page Object Model

pages/base_page.py

from appium.webdriver.common.appiumby import AppiumBy
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

class BasePage:
    DEFAULT_TIMEOUT = 15

    def __init__(self, driver):
        self.driver = driver
        self.wait = WebDriverWait(driver, self.DEFAULT_TIMEOUT)

    def find(self, by, value):
        return self.wait.until(EC.presence_of_element_located((by, value)))

    def click(self, by, value):
        self.find(by, value).click()

    def type_text(self, by, value, text):
        el = self.find(by, value)
        el.clear()
        el.send_keys(text)

    def get_text(self, by, value) -> str:
        return self.find(by, value).text

    def is_visible(self, by, value) -> bool:
        try:
            self.wait.until(EC.visibility_of_element_located((by, value)))
            return True
        except Exception:
            return False

    def swipe_up(self):
        size = self.driver.get_window_size()
        self.driver.swipe(
            size["width"] // 2, int(size["height"] * 0.8),
            size["width"] // 2, int(size["height"] * 0.2),
            duration=500
        )

pages/login_page.py

from appium.webdriver.common.appiumby import AppiumBy
from pages.base_page import BasePage

class LoginPage(BasePage):
    # Android locators (UIAutomator2)
    USERNAME_FIELD  = (AppiumBy.ACCESSIBILITY_ID, "username_input")
    PASSWORD_FIELD  = (AppiumBy.ACCESSIBILITY_ID, "password_input")
    LOGIN_BUTTON    = (AppiumBy.ACCESSIBILITY_ID, "login_button")
    ERROR_MESSAGE   = (AppiumBy.ID, "com.example.app:id/error_text")

    def login(self, username: str, password: str):
        self.type_text(*self.USERNAME_FIELD, username)
        self.type_text(*self.PASSWORD_FIELD, password)
        self.click(*self.LOGIN_BUTTON)

    def get_error(self) -> str:
        return self.get_text(*self.ERROR_MESSAGE)

    def is_login_visible(self) -> bool:
        return self.is_visible(*self.LOGIN_BUTTON)

---

Test example

tests/android/test_login_android.py

import pytest
from pages.login_page import LoginPage
from pages.home_page import HomePage

class TestLoginAndroid:

    def test_valid_login(self, android_driver):
        login = LoginPage(android_driver)
        home  = HomePage(android_driver)

        assert login.is_login_visible(), "Login screen not displayed"
        login.login("[email protected]", "ValidPass123")
        assert home.is_home_visible(), "Home screen not displayed after login"

    def test_invalid_login(self, android_driver):
        login = LoginPage(android_driver)

        login.login("[email protected]", "badpass")
        error = login.get_error()
        assert "Invalid" in error, f"Expected error message, got: {error}"

    @pytest.mark.parametrize("user,pwd", [
        ("", "pass123"),
        ("[email protected]", ""),
        ("", ""),
    ])
    def test_empty_fields(self, android_driver, user, pwd):
        login = LoginPage(android_driver)
        login.login(user, pwd)
        assert login.is_login_visible(), "Should remain on login screen"

---

pytest.ini

[pytest]
testpaths = tests
python_files = test_*.py
python_classes = Test*
python_functions = test_*
addopts =
    -v
    --html=reports/report.html
    --self-contained-html
    --alluredir=allure-results
markers =
    android: marks tests as android-only
    ios: marks tests as ios-only
    smoke: smoke test suite
    regression: full regression suite

---

Allure Reports

Instalación del CLI

# macOS
brew install allure

# Linux (via npm)
npm install -g allure-commandline

# Windows (via scoop)
scoop install allure

Decorators en tests

import allure
import pytest
from pages.login_page import LoginPage

@allure.epic("Autenticación")
@allure.feature("Login")
class TestLoginAndroid:

    @allure.story("Login exitoso")
    @allure.severity(allure.severity_level.CRITICAL)
    @allure.title("Usuario válido puede ingresar a la app")
    def test_valid_login(self, android_driver):
        with allure.step("Abrir pantalla de login"):
            login = LoginPage(android_driver)
            assert login.is_login_visible()

        with allure.step("Ingresar credenciales válidas"):
            login.login("[email protected]", "ValidPass123")

        with allure.step("Verificar redirección a home"):
            from pages.home_page import HomePage
            assert HomePage(android_driver).is_home_visible()

    @allure.story("Login fallido")
    @allure.severity(allure.severity_level.NORMAL)
    def test_invalid_login(self, android_driver):
        login = LoginPage(android_driver)
        with allure.step("Intentar login con credenciales inválidas"):
            login.login("[email protected]", "badpass")
        with allure.step("Verificar mensaje de error"):
            assert "Invalid" in login.get_error()

Screenshot automático en fallo (conftest.py)

import allure
import pytest

@pytest.hookimpl(tryfirst=True, hookwrapper=True)
def pytest_runtest_makereport(item, call):
    outcome = yield
    rep = outcome.get_result()
    if rep.when == "call" and rep.failed:
        driver = item.funcargs.get("android_driver") or item.funcargs.get("ios_driver")
        if driver:
            allure.attach(
                driver.get_screenshot_as_png(),
                name="screenshot_on_failure",
                attachment_type=allure.attachment_type.PNG
            )

Generar y abrir reporte

# Correr tests
pytest tests/android/ -m smoke

# Generar reporte HTML
allure generate allure-results --clean -o allure-report

# Abrir en browser
allure open allure-report

# Modo serve (live)
allure serve allure-results

---

Appium Inspector

Para detalles completos de configuración y uso → references/appium_inspector.md

Conexión rápida

1. Descargar desde https://github.com/appium/appium-inspector/releases
2. Appium Server URL: http://127.0.0.1:4723
3. Pegar capabilities JSON y hacer click en Start Session

Capabilities JSON para Inspector (Android)

{
  "platformName": "Android",
  "appium:automationName": "UiAutomator2",
  "appium:deviceName": "emulator-5554",
  "appium:app": "/abs/path/to/app.apk",
  "appium:noReset": true
}

Estrategias de localización en Inspector

Estrategia	Usar cuando
Accessibility ID	El elemento tiene content-desc (Android) o accessibilityIdentifier (iOS)
ID	resource-id en Android
XPath	Último recurso; copiar desde Inspector y simplificar
-android uiautomator	Búsquedas complejas en Android (texto, clase, índice)
-ios predicate string	iOS: label, name, value, type
-ios class chain	iOS: jerarquía de elementos

---

Gestures táctiles

Para referencia completa con todos los gestures → references/gestures.md

W3C Actions API (recomendado, Appium 2.x)

from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.actions.action_builder import ActionBuilder
from selenium.webdriver.common.actions.pointer_input import PointerInput
from selenium.webdriver.common.actions import interaction

def _touch_action(driver):
    """Helper: devuelve un PointerInput táctil."""
    return PointerInput(interaction.POINTER_TOUCH, "touch")

Gestures en pages/base_page.py (extendido)

from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.actions.action_builder import ActionBuilder
from selenium.webdriver.common.actions.pointer_input import PointerInput
from selenium.webdriver.common.actions import interaction

class BasePage:
    DEFAULT_TIMEOUT = 15

    def __init__(self, driver):
        self.driver = driver
        self.wait = WebDriverWait(driver, self.DEFAULT_TIMEOUT)

    # ── Métodos básicos ──────────────────────────────────────────────

    def find(self, by, value):
        return self.wait.until(EC.presence_of_element_located((by, value)))

    def click(self, by, value):
        self.find(by, value).click()

    def type_text(self, by, value, text):
        el = self.find(by, value)
        el.clear()
        el.send_keys(text)

    def get_text(self, by, value) -> str:
        return self.find(by, value).text

    def is_visible(self, by, value) -> bool:
        try:
            self.wait.until(EC.visibility_of_element_located((by, value)))
            return True
        except Exception:
            return False

    # ── Gestures W3C ────────────────────────────────────────────────

    def _get_size(self):
        return self.driver.get_window_size()

    def swipe(self, start_x: int, start_y: int, end_x: int, end_y: int, duration_ms: int = 500):
        """Swipe genérico de un punto a otro."""
        touch = PointerInput(interaction.POINTER_TOUCH, "touch")
        actions = ActionChains(self.driver)
        actions.w3c_actions = ActionBuilder(self.driver, mouse=touch)
        (actions.w3c_actions
            .pointer_action
            .move_to_location(start_x, start_y)
            .pointer_down()
            .pause(duration_ms / 1000)
            .move_to_location(end_x, end_y)
            .pointer_up())
        actions.perform()

    def swipe_up(self, percent: float = 0.6):
        """Scroll hacia arriba (descubrir contenido debajo)."""
        size = self._get_size()
        cx = size["width"] // 2
        self.swipe(cx, int(size["height"] * 0.8), cx, int(size["height"] * (0.8 - percent)))

    def swipe_down(self, percent: float = 0.6):
        """Scroll hacia abajo (pull-to-refresh o volver arriba)."""
        size = self._get_size()
        cx = size["width"] // 2
        self.swipe(cx, int(size["height"] * 0.2), cx, int(size["height"] * (0.2 + percent)))

    def swipe_left(self, percent: float = 0.6):
        """Swipe a la izquierda (carousels, tabs, delete)."""
        size = self._get_size()
        cy = size["height"] // 2
        self.swipe(int(size["width"] * 0.8), cy, int(size["width"] * (0.8 - percent)), cy)

    def swipe_right(self, percent: float = 0.6):
        """Swipe a la derecha (volver, abrir drawer)."""
        size = self._get_size()
        cy = size["height"] // 2
        self.swipe(int(size["width"] * 0.2), cy, int(size["width"] * (0.2 + percent)), cy)

    def swipe_on_element(self, element, direction: str = "up"):
        """Swipe dentro de un elemento (listas, sliders)."""
        loc = element.location
        sz  = element.size
        cx  = loc["x"] + sz["width"] // 2
        if direction == "up":
            self.swipe(cx, loc["y"] + int(sz["height"] * 0.8),
                       cx, loc["y"] + int(sz["height"] * 0.2))
        elif direction == "down":
            self.swipe(cx, loc["y"] + int(sz["height"] * 0.2),
                       cx, loc["y"] + int(sz["height"] * 0.8))

    def long_press(self, by, value, duration_ms: int = 1500):
        """Long press sobre un elemento."""
        el = self.find(by, value)
        touch = PointerInput(interaction.POINTER_TOUCH, "touch")
        actions = ActionChains(self.driver)
        actions.w3c_actions = ActionBuilder(self.driver, mouse=touch)
        (actions.w3c_actions
            .pointer_action
            .move_to_location(el.location["x"] + el.size["width"] // 2,
                              el.location["y"] + el.size["height"] // 2)
            .pointer_down()
            .pause(duration_ms / 1000)
            .pointer_up())
        actions.perform()

    def double_tap(self, by, value):
        """Doble tap sobre un elemento."""
        el = self.find(by, value)
        cx = el.location["x"] + el.size["width"] // 2
        cy = el.location["y"] + el.size["height"] // 2
        touch = PointerInput(interaction.POINTER_TOUCH, "touch")
        actions = ActionChains(self.driver)
        actions.w3c_actions = ActionBuilder(self.driver, mouse=touch)
        (actions.w3c_actions
            .pointer_action
            .move_to_location(cx, cy)
            .pointer_down().pointer_up()
            .pause(0.1)
            .pointer_down().pointer_up())
        actions.perform()

    def pinch_zoom(self, scale: float = 2.0):
        """
        Pinch (scale < 1.0) o zoom (scale > 1.0) en el centro de la pantalla.
        Requiere dos dedos simultáneos.
        """
        size   = self._get_size()
        cx, cy = size["width"] // 2, size["height"] // 2
        offset = int(min(cx, cy) * 0.3)

        f1 = PointerInput(interaction.POINTER_TOUCH, "finger1")
        f2 = PointerInput(interaction.POINTER_TOUCH, "finger2")

        if scale >= 1.0:   # zoom in
            f1_start, f1_end = cx - offset, cx - int(offset * scale)
            f2_start, f2_end = cx + offset, cx + int(offset * scale)
        else:              # pinch out
            f1_start, f1_end = cx - int(offset * scale), cx - offset
            f2_start, f2_end = cx + int(offset * scale), cx + offset

        actions = ActionChains(self.driver)
        actions.w3c_actions = ActionBuilder(self.driver, mouse=f1, wheel=f2)
        (actions.w3c_actions.pointer_action
            .move_to_location(f1_start, cy).pointer_down()
            .move_to_location(f1_end, cy).pointer_up())
        actions.perform()

    def scroll_to_element(self, by, value, max_swipes: int = 5) -> bool:
        """Hace swipe_up hasta encontrar el elemento. Retorna True si lo encontró."""
        for _ in range(max_swipes):
            try:
                el = self.driver.find_element(by, value)
                if el.is_displayed():
                    return True
            except Exception:
                pass
            self.swipe_up()
        return False

    def drag_and_drop(self, source_by, source_val, target_by, target_val):
        """Arrastra un elemento sobre otro."""
        src = self.find(source_by, source_val)
        tgt = self.find(target_by, target_val)
        sx = src.location["x"] + src.size["width"] // 2
        sy = src.location["y"] + src.size["height"] // 2
        tx = tgt.location["x"] + tgt.size["width"] // 2
        ty = tgt.location["y"] + tgt.size["height"] // 2
        self.swipe(sx, sy, tx, ty, duration_ms=1000)

Ejemplo de uso en test

@allure.story("Carrusel de productos")
def test_carousel_swipe(self, android_driver):
    page = ProductPage(android_driver)
    with allure.step("Hacer swipe left en el carrusel"):
        page.swipe_left()
    with allure.step("Verificar segundo item visible"):
        assert page.is_second_item_visible()

@allure.story("Lista de items")
def test_scroll_to_bottom(self, android_driver):
    page = ListPage(android_driver)
    with allure.step("Scroll hasta el último elemento"):
        found = page.scroll_to_element(AppiumBy.ACCESSIBILITY_ID, "last_item")
    assert found, "No se encontró el último elemento tras 5 swipes"

---

CI/CD Integration

For detailed CI/CD pipeline code, read the reference files:

• GitHub Actions → references/ci_github_actions.md (incluye paso de Allure)
• Jenkins → references/ci_jenkins.md (incluye publicación de Allure)
• Appium Inspector → references/appium_inspector.md
• Gestures avanzados → references/gestures.md

---

Common troubleshooting

Error	Likely cause	Fix
Could not find a connected Android device	ADB not seeing device	adb devices, enable USB debugging
An unknown server-side error occurred	Driver not installed	appium driver install uiautomator2
Session not created: No matching capabilities	Wrong caps key	Use appium: prefix for non-W3C caps
Element not found / timeout	Locator wrong or timing	Use Appium Inspector to re-check locator
WebDriverException: Message: unknown error	App crashed	Check device logs: adb logcat
iOS xcodebuild fails	Provisioning/Xcode mismatch	Check Xcode version + appium driver update xcuitest

---

Locator strategy priority (best practice)

1. ACCESSIBILITY_ID — most stable, cross-platform
2. ID (resource-id on Android, accessibility id on iOS)
3. XPATH — last resort, fragile
4. -android uiautomator / -ios predicate string — platform-specific power locators

---

Key imports cheatsheet

from appium import webdriver
from appium.options import AppiumOptions
from appium.webdriver.common.appiumby import AppiumBy
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
# Gestures W3C
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.actions.action_builder import ActionBuilder
from selenium.webdriver.common.actions.pointer_input import PointerInput
from selenium.webdriver.common.actions import interaction
# Allure
import allure