From 651fe2c0fb6c6f4f8378f17db0600cc87b0657e8 Mon Sep 17 00:00:00 2001
From: Mariusz Kuligowski <kulig15@gmail.com>
Date: Sun, 8 Apr 2018 19:24:50 +0200
Subject: [PATCH] Add unit tests for CarEngineFacade

---
 .../pattern/facade/CarEngineFacadeTest.java   | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 patterns/facade/src/test/java/com/baeldung/pattern/facade/CarEngineFacadeTest.java

diff --git a/patterns/facade/src/test/java/com/baeldung/pattern/facade/CarEngineFacadeTest.java b/patterns/facade/src/test/java/com/baeldung/pattern/facade/CarEngineFacadeTest.java
new file mode 100644
index 0000000000..dce5ce7df3
--- /dev/null
+++ b/patterns/facade/src/test/java/com/baeldung/pattern/facade/CarEngineFacadeTest.java
@@ -0,0 +1,85 @@
+package com.baeldung.pattern.facade;
+
+import ch.qos.logback.classic.Logger;
+import ch.qos.logback.classic.spi.ILoggingEvent;
+import ch.qos.logback.core.AppenderBase;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.*;
+
+public class CarEngineFacadeTest {
+
+
+    private InMemoryCustomTestAppender appender;
+
+
+    @Before
+    public void setUp() {
+        appender = new InMemoryCustomTestAppender();
+    }
+
+    @After
+    public void tearDown() {
+        appender.stop();
+    }
+
+
+    @Test
+    public void testStartEngine() {
+        CarEngineFacade carEngineFacade = new CarEngineFacade();
+        carEngineFacade.startEngine();
+        assertTrue(appender.logContains("Fuel injector ready to inject fuel."));
+        assertTrue(appender.logContains("Getting air measurements..."));
+        assertTrue(appender.logContains("Air provided!"));
+        assertTrue(appender.logContains("Fuel injector ready to inject fuel."));
+        assertTrue(appender.logContains("Fuel Pump is pumping fuel..."));
+        assertTrue(appender.logContains("Fuel injected."));
+        assertTrue(appender.logContains("Starting..."));
+        assertTrue(appender.logContains("Setting temperature upper limit to 90"));
+        assertTrue(appender.logContains("Cooling Controller ready!"));
+        assertTrue(appender.logContains("Setting radiator speed to 10"));
+        assertTrue(appender.logContains("Catalytic Converter switched on!"));
+    }
+
+
+    @Test
+    public void testStopEngine() {
+        CarEngineFacade carEngineFacade = new CarEngineFacade();
+        carEngineFacade.stopEngine();
+        assertTrue(appender.logContains("Stopping Fuel injector..."));
+        assertTrue(appender.logContains("Catalytic Converter switched off!"));
+        assertTrue(appender.logContains("Scheduled cooling with maximum allowed temperature 50"));
+        assertTrue(appender.logContains("Getting temperature from the sensor..."));
+        assertTrue(appender.logContains("Radiator switched on!"));
+        assertTrue(appender.logContains("Stopping Cooling Controller..."));
+        assertTrue(appender.logContains("Radiator switched off!"));
+        assertTrue(appender.logContains("Air controller switched off."));
+    }
+
+    private class InMemoryCustomTestAppender extends AppenderBase<ILoggingEvent> {
+
+        private List<ILoggingEvent> logs = new ArrayList<>();
+
+        public InMemoryCustomTestAppender() {
+            ((Logger) LoggerFactory.getLogger("root")).addAppender(this);
+            start();
+        }
+
+        @Override
+        protected void append(ILoggingEvent eventObject) {
+            logs.add(eventObject);
+        }
+
+        public boolean logContains(String message) {
+            return logs.stream().anyMatch(event -> event.getFormattedMessage().equals(message));
+        }
+    }
+
+
+}
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