JUnit5 - Use CsvFileSource instead of MethodSource (#42)

Author: olgapuig

src/test/java/com/systelab/seed/patient/control/BodyMassIndexCalculatorTest.java

@@ -7,59 +7,26 @@
 import io.qameta.allure.TmsLink;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.MethodSource;
-
-import java.util.Arrays;
-import java.util.List;
+import org.junit.jupiter.params.provider.CsvFileSource;
 
 public class BodyMassIndexCalculatorTest {
 
-    static class Scenario {
-        public Double weight;
-        public Double height;
-        public Double expectedResult;
-
-        public Scenario(Double weight, Double height, Double expectedResult) {
-            this.weight = weight;
-            this.height = height;
-            this.expectedResult = expectedResult;
-        }
-    }
-
-    static List<Scenario> scenarios() {
-        // @formatter:off
-        return Arrays.asList(
-                new Scenario(0.0, 0.0, null),
-                new Scenario(-1.0, 0.0, null),
-                new Scenario(-1.0, 1.0, null),
-                new Scenario(1.0, -1.0, null),
-                new Scenario(1.0, 0.0, null),
-                new Scenario(5.0, 0.1, null),
-                new Scenario(30.0, 0.5, 120.0),
-                new Scenario(45.0, 1.0, 45.0),
-                new Scenario(65.0, 1.40, 33.2),
-                new Scenario(75.0, 1.8, 23.1),
-                new Scenario(95.0, 1.8, 29.3),
-                new Scenario(78.5, 1.805, 24.1)
-        );
-        // @formatter:on
-    }
-
     @Step("Action: Calculate the BMI with a weight of {0} kg and a height of {1} meters")
     public void printScenario(Double weight, Double height) {
     }
 
     @TmsLink("TC1234_Formulas")
     @Feature("Goal: This test case is intended to verify the correct calculation of the Body Mass Index")
     @ParameterizedTest
-    @MethodSource("scenarios")
-    public void checkBMICalculationForCorrectValuesTest(Scenario scenario) {
-        printScenario(scenario.weight, scenario.height);
-        Double bmiCalculated = BodyMassIndexCalculator.getBMI(scenario.weight, scenario.height);
-        if (scenario.expectedResult == null)
+    @CsvFileSource(resources = "/bodyMassIndexCalculator.csv")
+    public void checkBMICalculationForCorrectValuesTest(Double weight, Double height, String expectedResultStr) {
+        Double expectedResult = expectedResultStr.equals("null") ? null : Double.parseDouble(expectedResultStr);
+        printScenario(weight, height);
+        Double bmiCalculated = BodyMassIndexCalculator.getBMI(weight, height);
+        if (expectedResult == null)
             TestUtil.checkObjectIsNull("BMI", bmiCalculated);
         else
-            TestUtil.checkField("BMI", scenario.expectedResult, bmiCalculated);
+            TestUtil.checkField("BMI", expectedResult, bmiCalculated);
     }
 
     //This is an example of a Single Test in the same class with Parameterized Tests

src/test/resources/bodyMassIndexCalculator.csv

@@ -0,0 +1,12 @@
+0.0, 0.0, null
+-1.0, 0.0, null
+-1.0, 1.0, null
+1.0, -1.0, null
+1.0, 0.0, null
+5.0, 0.1, null
+30.0, 0.5, 120.0
+45.0, 1.0, 45.0
+65.0, 1.40, 33.2
+75.0, 1.8, 23.1
+95.0, 1.8, 29.3
+78.5, 1.805, 24.1