RN-Android build成apk后就是一个十分正常的android应用了。用android正常的test framework就可以对它进行automation test。前几天用Appium试着跑了一下demo，发现其中还是有坑的。
RN中最基本的component例如View和TextInput都有一个prop叫testID -> 这里是官网说明。 可以用来做end-to-end test的locator。那么它应该显示在哪里呢？根据facebook的code，看起来应该是作为content description出现：
ReactTestHelper.java
/**
* Gets the view with a given react test ID in the UI hierarchy. React test ID is currently
* propagated into view content description.
*/
public static View getViewWithReactTestId(View rootView, String testId) {
return findChild(rootView, hasTagValue(testId));
}于是在demo中某个render加了类似如下testID:
render: function() {
return (
<View style = {styles.container}>
...
<View style = {styles.input}>
<TextInput
...
placeholder = {'Your Account'}
testID = 'debug-signin-username-input' />
</View>
<View style = {styles.input}>
<TextInput
...
placeholder = {'Your Password'}
testID = 'debug-signin-passwd-input' />
</View>
...
</View>
);
},build好后用uiautomator一看，content-desc是空的：
网上搜了搜发现这个帖子，原文-> React Native put testID into the tag of view, and accessibilityLabel into content description。accessibilityLabel这个prop目前View才有，于是改成以下：
render: function() {
return (
<View style = {styles.container}>
...
<View
style = {styles.input}
accessibilityLabel = 'username-input'>
<TextInput
...
placeholder = {'Your Account'} />
</View>
<View
style = {styles.input}
accessibilityLabel = 'passwd-input'>
<TextInput
...
placeholder = {'Your Password'} />
</View>
<TouchableNativeFeedback>
<View style={styles.submit}
accessibilityLabel = 'signin-submit'>
<Text style={styles.submitText}>
SIGN IN
</Text>
</View>
</TouchableNativeFeedback>
</View>
);
},再用uiautomator看，content-desc有了：
测试代码如下：
def test_find_elements(self):
sleep(5)
user_input = self.driver.find_element_by_accessibility_id("username-input")
user_input.click()
user_input.send_keys('test_account')
pwd_input = self.driver.find_element_by_accessibility_id("passwd-input")
pwd_input.click()
pwd_input.send_keys('123456')
signin_submit = self.driver.find_element_by_accessibility_id("signin-submit")
signin_submit.click()启动Appium跑测试代码，通过。
