added couple of tests springframeworkguru#2

Author: cristiii

src/main/java/guru/springframework/sfgpetclinic/controllers/IndexController.java

@@ -8,6 +8,6 @@ public String index(){
     }
 
     public String oupsHandler(){
-        return "notimplemented";
+        throw new ValueNotFoundException();
     }
 }

src/main/java/guru/springframework/sfgpetclinic/controllers/ValueNotFoundException.java

@@ -0,0 +1,4 @@
+package guru.springframework.sfgpetclinic.controllers;
+
+public class ValueNotFoundException extends RuntimeException {
+}

src/test/java/guru/springframework/sfgpetclinic/controllers/IndexControllerTest.java

@@ -1,9 +1,15 @@
 package guru.springframework.sfgpetclinic.controllers;
 
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.condition.*;
+
+import java.time.Duration;
 
 import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assumptions.assumeTrue;
 
 class IndexControllerTest {
 
@@ -15,12 +21,62 @@ void setUp() {
     }
 
     @Test
+    @DisplayName("Test proper view name for index page")
     void index() {
         assertEquals("index", indexController.index());
     }
 
     @Test
+    @DisplayName("Test exception")
     void oupsHandler() {
-        assertEquals("notimplemented", indexController.oupsHandler(), () -> "this is some expensive message to build for test");
+        assertThrows(ValueNotFoundException.class, () -> {indexController.oupsHandler();});
+    }
+
+    @Test
+    @Disabled
+    void testTimeOut() {
+        assertTimeout(Duration.ofMillis(100), () -> {Thread.sleep(2000);
+            System.out.println("I got here!");});
+    }
+    @Test
+    @Disabled
+    void testTimeOutPrempt() {
+        assertTimeoutPreemptively(Duration.ofMillis(100), () -> {Thread.sleep(2000);
+            System.out.println("I got here again!");});
+    }
+
+    @Test
+    void testAssumptionTrue() {
+        assumeTrue("Cristi".equalsIgnoreCase(System.getenv("Cristi")));
+    }
+
+    @Test
+    @EnabledOnOs(OS.MAC)
+    void testOnMacOs() {
+
+    }
+
+    @Test
+    @EnabledOnOs(OS.WINDOWS)
+    void testOnWindows() {
+
+    }
+
+    @Test
+    @EnabledOnJre(JRE.JAVA_11)
+    void testOnJava11() {
+
+    }
+
+    @Test
+    @EnabledOnJre(JRE.OTHER)
+    void testOnJava17() {
+
+    }
+
+    @Test
+    @EnabledIfEnvironmentVariable(named = "USER", matches = "cristi")
+    void testIfUser() {
+
     }
 }