P1ch5

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "java.configuration.updateBuildConfiguration": "interactive"
+}

pom.xml

@@ -17,6 +17,12 @@
 			<version>5.5.1</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.23.1</version>
+            <scope>test</scope>
+        </dependency>
 	</dependencies>
 	<build>
 		<plugins>

src/main/java/com/openclassrooms/testing/Calculator.java

@@ -1,5 +1,8 @@
 package com.openclassrooms.testing;
 
+import java.util.HashSet;
+import java.util.Set;
+
 public class Calculator {
 
 	public int add(int a, int b) {
@@ -18,4 +21,16 @@ public void longCalculation() {
 		}
 	}
 
+	public Set<Integer> digitsSet(int number) {
+		Set<Integer> integers = new HashSet<Integer>();
+		String numberString = String.valueOf(number);
+
+		for (int i = 0; i < numberString.length(); i++){
+			integers.add(Integer.parseInt(numberString, i, i +1 ,10 ));
+		}
+
+
+		return integers;
+	}
+
 }

src/test/java/com/openclassrooms/testing/CalculatorTest.java

@@ -5,7 +5,11 @@
 import java.text.MessageFormat;
 import java.time.Duration;
 import java.time.Instant;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
+import static org.assertj.core.api.Assertions.*;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeAll;
@@ -51,14 +55,14 @@ public static void showTestDuration() {
 	@Test
 	public void testAddTwoPositiveNumbers() {
 		// Arrange
-		int a = 2;
+		int a = 8;
 		int b = 3;
 
 		// Act
 		int somme = calculatorUnderTest.add(a, b);
 
 		// Assert
-		assertEquals(5, somme);
+		assertThat(somme).isEqualTo(5);
 	}
 
 	@Test
@@ -71,7 +75,8 @@ public void multiply_shouldReturnTheProduct_ofTwoIntegers() {
 		int produit = calculatorUnderTest.multiply(a, b);
 
 		// Assert
-		assertEquals(462, produit);
+
+		assertThat(produit).isEqualTo(462);
 	}
 
 	@ParameterizedTest(name = "{0} x 0 doit être égal à 0")
@@ -83,7 +88,8 @@ public void multiply_shouldReturnZero_ofZeroWithMultipleIntegers(int arg) {
 		int actualResult = calculatorUnderTest.multiply(arg, 0);
 
 		// Assert -- ça vaut toujours zéro !
-		assertEquals(0, actualResult);
+
+		assertThat(actualResult).isEqualTo(0);
 	}
 
 	@ParameterizedTest(name = "{0} + {1} doit être égal à {2}")
@@ -95,7 +101,8 @@ public void add_shouldReturnTheSum_ofMultipleIntegers(int arg1, int arg2, int ex
 		int actualResult = calculatorUnderTest.add(arg1, arg2);
 
 		// Assert
-		assertEquals(expectResult, actualResult);
+
+		assertThat(actualResult).isEqualTo(expectResult);
 	}
 
 	@Timeout(1)
@@ -110,4 +117,19 @@ public void longCalcul_shouldComputeInLessThan1Second() {
 		// ...
 	}
 
+
+    @Test
+public void listDigits_shouldReturnsTheListOfDigits_ofPositiveInteger() {
+	// GIVEN
+	int number = 95897;
+
+	// WHEN
+	Set<Integer> actualDigits = calculatorUnderTest.digitsSet(number);
+
+	// THEN
+	Set<Integer> expectedDigits = Stream.of(5, 7, 8, 9).collect(Collectors.toSet());
+	assertEquals(expectedDigits, actualDigits);
+}
+
+
 }