Since all our snapshot tests' filenames end with .snapshot.js, we can run all the snapshot tests with a single command:

npm test snapshot

The first time you run the tests, as before, the snapshots will be created: 

If we check the __snapshots__ directory, we will find the three produced .snap files within. Their format is the same as with the React examples that we developed earlier. Let's just have a look at the <RegionsTable> one, which we showed earlier:

// Jest Snapshot v1, https://goo.gl/fbAQLP

exports[`RegionsTable renders correctly a list 1`] = `
<RCTScrollView
  style={
    Array [
      undefined,
      Object {
        "backgroundColor": "lightgray",
      },
    ]
  }
>
  <View>
    <View>
      <Text
        accessible={true}
        allowFontScaling={true}
        ellipsizeMode="tail"
      >
        Cerro Largo
      </Text>
    </View>
    <View>
      <Text
        accessible={true}
        allowFontScaling={true}
        ellipsizeMode="tail"
      >
        Maldonado
      </Text>
    </View>
    <View>
      <Text
        accessible={true}
        allowFontScaling={true}
        ellipsizeMode="tail"
      >
        Montevideo
      </Text>
    </View>
  </View>
</RCTScrollView>
`;

exports[`RegionsTable renders correctly an empty list 1`] = `
<View
  style={undefined}
>
  <Text
    accessible={true}
    allowFontScaling={true}
    ellipsizeMode="tail"
  >
    No regions.
  </Text>
</View>
`;

If in the future you run the tests again and nothing has been changed, then the results will be three PASS green messages:

Everything is working fine, so we can aver that writing snapshot tests doesn't add any complications to RN testing, and can be carried out without difficulty.