13bdfedeb1
Differential Revision: D14057661 fbshipit-source-id: 7780ec117cbe5deb8cf9211b228b186bf97e1b1f
97 lines
3.1 KiB
Markdown
97 lines
3.1 KiB
Markdown
---
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id: testing
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title: Testing
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sidebar_label: Testing
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---
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Developer tools are only used if they work. We have built APIs to test plugins.
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## Android
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Start by creating your first test file in this directory `MyFlipperPluginTest.java`. In the test method body we create our plugin which we want to test as well as a `FlipperConnectionMock`. In this contrived example we simply assert that our plugin's connected status is what we expect.
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```java
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@RunWith(RobolectricTestRunner.class)
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public class MyFlipperPluginTest {
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@Test
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public void myTest() {
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final MyFlipperPlugin plugin = new MyFlipperPlugin();
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final FlipperConnectionMock connection = new FlipperConnectionMock();
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plugin.onConnect(connection);
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assertThat(plugin.connected(), equalTo(true));
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}
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}
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```
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There are two mock classes that are used to construct tests `FlipperConnectionMock` and `FlipperResponderMock`. Together these can be used to write very powerful tests to verify the end to end behavior of your plugin. For example we can test if for a given incoming message our plugin responds as we expect.
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```java
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@Test
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public void myTest() {
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final MyFlipperPlugin plugin = new MyFlipperPlugin();
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final FlipperConnectionMock connection = new FlipperConnectionMock();
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final FlipperResponderMock responder = new FlipperResponderMock();
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plugin.onConnect(connection);
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final FlipperObject params = new FlipperObject.Builder()
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.put("phrase", "flipper")
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.build();
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connection.receivers.get("myMethod").onReceive(params, responder);
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assertThat(responder.successes, hasItem(
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new FlipperObject.Builder()
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.put("phrase", "ranos")
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.build()));
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}
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```
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## C++
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Start by creating your first test file in this directory `MyFlipperPluginTests.cpp` and import the testing utilities from `fbsource//xplat/sonar/xplat:FlipperTestLib`. These utilities mock out core pieces of the communication channel so that you can test your plugin in isolation.
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```
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#include <MyFlipperPlugin/MyFlipperPlugin.h>
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#include <FlipperTestLib/FlipperConnectionMock.h>
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#include <FlipperTestLib/FlipperResponderMock.h>
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#include <folly/json.h>
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#include <gtest/gtest.h>
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namespace facebook {
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namespace flipper {
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namespace test {
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TEST(MyFlipperPluginTests, testDummy) {
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EXPECT_EQ(1 + 1, 2);
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}
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} // namespace test
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} // namespace flipper
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} // namespace facebook
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```
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Here is a simple test using these mock utilities to create a plugin, send some data, and assert that the result is as expected.
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```
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TEST(MyFlipperPluginTests, testDummy) {
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std::vector<folly::dynamic> successfulResponses;
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auto responder = std::make_unique<FlipperResponderMock>(&successfulResponses);
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auto conn = std::make_shared<FlipperConnectionMock>();
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MyFlipperPlugin plugin;
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plugin.didConnect(conn);
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folly::dynamic message = folly::dynamic::object("param1", "hello");
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folly::dynamic expectedResponse = folly::dynamic::object("response", "Hi there");
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auto receiver = conn->receivers_["someMethod"];
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receiver(message, std::move(responder));
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EXPECT_EQ(successfulResponses.size(), 1);
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EXPECT_EQ(successfulResponses.back(), expectedResponse);
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}
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```
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