diff --git a/GreetingController.java b/GreetingController.java
new file mode 100644
index 0000000..2fea65e
--- /dev/null
+++ b/GreetingController.java
@@ -0,0 +1,47 @@
+package week4;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.web.servlet.MockMvc;
+
+@SpringBootTest
+@AutoConfigureMockMvc
+class GreetingControllerTests {
+
+	@Autowired
+	private MockMvc mockMvc;
+
+	@Test
+	void helloReturnsHelloWorld() throws Exception {
+		mockMvc.perform(get("/hello"))
+				.andExpect(status().isOk())
+				.andExpect(content().string("Hello World!"));
+	}
+
+	@Test
+	void helloNameReturnsPersonalizedGreeting() throws Exception {
+		mockMvc.perform(get("/hello/Ada"))
+				.andExpect(status().isOk())
+				.andExpect(content().string("Hello Ada!"));
+	}
+
+	@Test
+	void addReturnsSum() throws Exception {
+		mockMvc.perform(get("/add/7/5"))
+				.andExpect(status().isOk())
+				.andExpect(content().string("12"));
+	}
+
+	@Test
+	void multiplyReturnsProduct() throws Exception {
+		mockMvc.perform(get("/multiply/7/5"))
+				.andExpect(status().isOk())
+				.andExpect(content().string("35"));
+	}
+}
diff --git a/TimeController.java b/TimeController.java
new file mode 100644
index 0000000..20c512a
--- /dev/null
+++ b/TimeController.java
@@ -0,0 +1,44 @@
+package project4;
+
+import java.time.DayOfWeek;
+import java.time.LocalDate;
+import java.time.LocalTime;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+class TimeController {
+
+	private final TimeService timeService;
+
+	TimeController(TimeService timeService) {
+		this.timeService = timeService;
+	}
+
+	@GetMapping("/time")
+	LocalTime getTime() {
+		return timeService.getCurrentTime();
+	}
+
+	@GetMapping("/date")
+	LocalDate getDate() {
+		return timeService.getCurrentDate();
+	}
+
+	@GetMapping("/day")
+	DayOfWeek getDayOfWeek() {
+		return timeService.getCurrentDayOfWeek();
+	}
+
+	@GetMapping("/all")
+	TimeInformation getAllTimeInformation() {
+		return new TimeInformation(
+				timeService.getCurrentTime(),
+				timeService.getCurrentDate(),
+				timeService.getCurrentDayOfWeek());
+	}
+
+	record TimeInformation(LocalTime time, LocalDate date, DayOfWeek dayOfWeek) {
+	}
+}
diff --git a/TimeService.java b/TimeService.java
new file mode 100644
index 0000000..38bddd8
--- /dev/null
+++ b/TimeService.java
@@ -0,0 +1,23 @@
+package project4;
+
+import java.time.DayOfWeek;
+import java.time.LocalDate;
+import java.time.LocalTime;
+
+import org.springframework.stereotype.Service;
+
+@Service
+class TimeService {
+
+	LocalTime getCurrentTime() {
+		return LocalTime.now();
+	}
+
+	LocalDate getCurrentDate() {
+		return LocalDate.now();
+	}
+
+	DayOfWeek getCurrentDayOfWeek() {
+		return LocalDate.now().getDayOfWeek();
+	}
+}
diff --git a/WeatherControllerTests.java b/WeatherControllerTests.java
new file mode 100644
index 0000000..7f5654e
--- /dev/null
+++ b/WeatherControllerTests.java
@@ -0,0 +1,63 @@
+package project4;
+
+import static org.mockito.Mockito.when;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.test.context.bean.override.mockito.MockitoBean;
+import org.springframework.test.web.servlet.MockMvc;
+
+@WebMvcTest(WeatherController.class)
+class WeatherControllerTests {
+
+	@Autowired
+	private MockMvc mockMvc;
+
+	@MockitoBean
+	private WeatherService weatherService;
+
+	@Test
+	void temperatureReturnsCurrentTemperature() throws Exception {
+		when(weatherService.getCurrentTemperature()).thenReturn(22);
+
+		mockMvc.perform(get("/weather/temperature"))
+				.andExpect(status().isOk())
+				.andExpect(content().string("22"));
+	}
+
+	@Test
+	void conditionReturnsCurrentCondition() throws Exception {
+		when(weatherService.getWeatherCondition()).thenReturn("Sunny");
+
+		mockMvc.perform(get("/weather/condition"))
+				.andExpect(status().isOk())
+				.andExpect(content().string("Sunny"));
+	}
+
+	@Test
+	void windReturnsCurrentWindSpeed() throws Exception {
+		when(weatherService.getWindSpeed()).thenReturn(18);
+
+		mockMvc.perform(get("/weather/wind"))
+				.andExpect(status().isOk())
+				.andExpect(content().string("18"));
+	}
+
+	@Test
+	void allReturnsCompleteWeatherInformation() throws Exception {
+		when(weatherService.getCurrentTemperature()).thenReturn(9);
+		when(weatherService.getWeatherCondition()).thenReturn("Cloudy");
+		when(weatherService.getWindSpeed()).thenReturn(41);
+
+		mockMvc.perform(get("/weather/all"))
+				.andExpect(status().isOk())
+				.andExpect(jsonPath("$.temperature").value(9))
+				.andExpect(jsonPath("$.condition").value("Cloudy"))
+				.andExpect(jsonPath("$.windSpeed").value(41));
+	}
+}
diff --git a/WeatherService.java b/WeatherService.java
new file mode 100644
index 0000000..4d6bb08
--- /dev/null
+++ b/WeatherService.java
@@ -0,0 +1,25 @@
+package project4;
+
+import java.util.List;
+import java.util.concurrent.ThreadLocalRandom;
+
+import org.springframework.stereotype.Service;
+
+@Service
+class WeatherService {
+
+	private static final List<String> CONDITIONS = List.of("Sunny", "Rainy", "Cloudy", "Windy");
+
+	int getCurrentTemperature() {
+		return ThreadLocalRandom.current().nextInt(-10, 41);
+	}
+
+	String getWeatherCondition() {
+		int conditionIndex = ThreadLocalRandom.current().nextInt(CONDITIONS.size());
+		return CONDITIONS.get(conditionIndex);
+	}
+
+	int getWindSpeed() {
+		return ThreadLocalRandom.current().nextInt(0, 101);
+	}
+}