First commit

Homework 1/src/testing/WeightedTotalStrategyTest.java

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+package testing;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.*;
+
+import grading.Grade;
+import grading.WeightedTotalStrategy;
+import grading.SizeException;
+
+class WeightedTotalStrategyTest
+{
+  private static final String HOMEWORK_KEY = "HW";
+  private static final String MIDTERM_KEY = "Midterm";
+  private static final String FINAL_KEY = "Final";
+  private static final String TOTAL_KEY = "Total";
+
+  @Test
+  void calculateTest()
+  {
+    List<Grade> grades = new ArrayList<Grade>();
+    grades.add(new Grade(HOMEWORK_KEY, 40.0));
+    grades.add(new Grade(MIDTERM_KEY, (Double) null));
+    grades.add(new Grade(FINAL_KEY, 100.0));
+
+    Map<String, Double> weights = new HashMap<String, Double>();
+    weights.put(MIDTERM_KEY, 2.0);
+    weights.put(FINAL_KEY, 3.0);
+
+    WeightedTotalStrategy defaultStrategy = new WeightedTotalStrategy();
+
+    assertThrows(SizeException.class,
+        () -> defaultStrategy.calculate(TOTAL_KEY, (List<Grade>) null));
+    assertThrows(SizeException.class,
+        () -> defaultStrategy.calculate(TOTAL_KEY, new ArrayList<Grade>()));
+
+    Grade total = defaultStrategy.calculate(TOTAL_KEY, grades);
+
+    assertEquals(TOTAL_KEY, total.getKey());
+    assertEquals(140.0, total.getValue());
+
+    WeightedTotalStrategy strategy = new WeightedTotalStrategy(weights);
+
+    Grade weightedTotal = strategy.calculate(TOTAL_KEY, grades);
+
+    assertEquals(TOTAL_KEY, weightedTotal.getKey());
+    assertEquals(340.0, weightedTotal.getValue());
+  }
+}