From 5e1131167fadba6687b7f72c23805c731d957278 Mon Sep 17 00:00:00 2001
From: Gallen <90502827+gongg21@users.noreply.github.com>
Date: Tue, 14 Nov 2023 12:14:59 +0800
Subject: [PATCH] Add UniqueCourseListTest.java

---
 .../model/course/UniqueCourseListTest.java    | 171 ++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 src/test/java/seedu/codesphere/model/course/UniqueCourseListTest.java

diff --git a/src/test/java/seedu/codesphere/model/course/UniqueCourseListTest.java b/src/test/java/seedu/codesphere/model/course/UniqueCourseListTest.java
new file mode 100644
index 00000000000..7c7b8d6fe24
--- /dev/null
+++ b/src/test/java/seedu/codesphere/model/course/UniqueCourseListTest.java
@@ -0,0 +1,171 @@
+package seedu.codesphere.model.course;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static seedu.codesphere.testutil.Assert.assertThrows;
+import static seedu.codesphere.testutil.TypicalCourses.CS1101S;
+import static seedu.codesphere.testutil.TypicalCourses.CS2100;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+import org.junit.jupiter.api.Test;
+
+import seedu.codesphere.model.course.exceptions.DuplicateCourseException;
+import seedu.codesphere.model.course.exceptions.CourseNotFoundException;
+import seedu.codesphere.testutil.CourseBuilder;
+
+public class UniqueCourseListTest {
+
+    private final UniqueCourseList uniqueCourseList = new UniqueCourseList();
+
+    @Test
+    public void contains_nullCourse_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> uniqueCourseList.contains(null));
+    }
+
+    @Test
+    public void contains_courseNotInList_returnsFalse() {
+        assertFalse(uniqueCourseList.contains(CS1101S));
+    }
+
+    @Test
+    public void contains_courseInList_returnsTrue() {
+        uniqueCourseList.add(CS1101S);
+        assertTrue(uniqueCourseList.contains(CS1101S));
+    }
+
+    @Test
+    public void contains_courseWithSameIdentityFieldsInList_returnsTrue() {
+        uniqueCourseList.add(CS1101S);
+        Course editedCourse = new CourseBuilder(CS1101S).build();
+        assertTrue(uniqueCourseList.contains(CS1101S));
+    }
+
+    @Test
+    public void add_nullCourse_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> uniqueCourseList.add(null));
+    }
+
+    @Test
+    public void add_duplicateCourse_throwsDuplicateStudentException() {
+        uniqueCourseList.add(CS1101S);
+        assertThrows(DuplicateCourseException.class, () -> uniqueCourseList.add(CS1101S));
+    }
+
+    @Test
+    public void setCourse_nullTargetCourse_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> uniqueCourseList.setCourse(null, CS1101S));
+    }
+
+    @Test
+    public void setCourse_nullEditedCourse_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> uniqueCourseList.setCourse(CS1101S, null));
+    }
+
+    @Test
+    public void setCourse_targetCourseNotInList_throwsStudentNotFoundException() {
+        assertThrows(CourseNotFoundException.class, () -> uniqueCourseList.setCourse(CS1101S, CS1101S));
+    }
+
+    @Test
+    public void setCourse_editedCourseIsSameCourse_success() {
+        uniqueCourseList.add(CS1101S);
+        uniqueCourseList.setCourse(CS1101S, CS1101S);
+        UniqueCourseList expectedUniqueCourseList = new UniqueCourseList();
+        expectedUniqueCourseList.add(CS1101S);
+        assertEquals(expectedUniqueCourseList, uniqueCourseList);
+    }
+
+    @Test
+    public void setCourse_editedCourseHasSameIdentity_success() {
+        uniqueCourseList.add(CS1101S);
+        Course editedCourse = new CourseBuilder(CS1101S).build();
+        uniqueCourseList.setCourse(CS1101S, editedCourse);
+        UniqueCourseList expectedUniqueStudentList = new UniqueCourseList();
+        expectedUniqueStudentList.add(editedCourse);
+        assertEquals(expectedUniqueStudentList, uniqueCourseList);
+    }
+
+    @Test
+    public void setCourse_editedCourseHasDifferentIdentity_success() {
+        uniqueCourseList.add(CS1101S);
+        uniqueCourseList.setCourse(CS1101S, CS2100);
+        UniqueCourseList expectedUniqueCourseList = new UniqueCourseList();
+        expectedUniqueCourseList.add(CS2100);
+        assertEquals(expectedUniqueCourseList, uniqueCourseList);
+    }
+
+    @Test
+    public void setCourse_editedCourseHasNonUniqueIdentity_throwsDuplicateStudentException() {
+        uniqueCourseList.add(CS1101S);
+        uniqueCourseList.add(CS2100);
+        assertThrows(DuplicateCourseException.class, () -> uniqueCourseList.setCourse(CS1101S, CS2100));
+    }
+
+    @Test
+    public void remove_nullCourse_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> uniqueCourseList.remove(null));
+    }
+
+    @Test
+    public void remove_courseDoesNotExist_throwsCourseNotFoundException() {
+        assertThrows(CourseNotFoundException.class, () -> uniqueCourseList.remove(CS1101S));
+    }
+
+    @Test
+    public void remove_existingCourse_removesCourse() {
+        uniqueCourseList.add(CS1101S);
+        uniqueCourseList.remove(CS1101S);
+        UniqueCourseList expectedUniqueStudentList = new UniqueCourseList();
+        assertEquals(expectedUniqueStudentList, uniqueCourseList);
+    }
+
+    @Test
+    public void setCourses_nullUniqueCourseList_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> uniqueCourseList.setCourses((UniqueCourseList) null));
+    }
+
+    @Test
+    public void setCourses_uniqueCourseList_replacesOwnListWithProvidedUniqueCourseList() {
+        uniqueCourseList.add(CS1101S);
+        UniqueCourseList expectedUniqueCourseList = new UniqueCourseList();
+        expectedUniqueCourseList.add(CS2100);
+        uniqueCourseList.setCourses(expectedUniqueCourseList);
+        assertEquals(expectedUniqueCourseList, uniqueCourseList);
+    }
+
+    @Test
+    public void setCourses_nullList_throwsNullPointerException() {
+        assertThrows(NullPointerException.class, () -> uniqueCourseList.setCourses((List<Course>) null));
+    }
+
+    @Test
+    public void setCourses_list_replacesOwnListWithProvidedList() {
+        uniqueCourseList.add(CS1101S);
+        List<Course> studentList = Collections.singletonList(CS2100);
+        uniqueCourseList.setCourses(studentList);
+        UniqueCourseList expectedUniqueStudentList = new UniqueCourseList();
+        expectedUniqueStudentList.add(CS2100);
+        assertEquals(expectedUniqueStudentList, uniqueCourseList);
+    }
+
+    @Test
+    public void setCourses_listWithDuplicateCourses_throwsDuplicateCourseException() {
+        List<Course> listWithDuplicateCourses = Arrays.asList(CS1101S, CS1101S);
+        assertThrows(DuplicateCourseException.class, () -> uniqueCourseList.setCourses(listWithDuplicateCourses));
+    }
+
+    @Test
+    public void asUnmodifiableObservableList_modifyList_throwsUnsupportedOperationException() {
+        assertThrows(UnsupportedOperationException.class, ()
+                -> uniqueCourseList.asUnmodifiableObservableList().remove(0));
+    }
+
+    @Test
+    public void toStringMethod() {
+        assertEquals(uniqueCourseList.asUnmodifiableObservableList().toString(), uniqueCourseList.toString());
+    }
+}