diff --git a/courseData.txt b/courseData.txt new file mode 100644 index 0000000..e69de29 diff --git a/src/main/java/org/example/Course.java b/src/main/java/org/example/Course.java index e32b098..7715ca3 100644 --- a/src/main/java/org/example/Course.java +++ b/src/main/java/org/example/Course.java @@ -1,4 +1,9 @@ package org.example; +import java.io.*; +import java.util.List; +import java.util.ArrayList; + + /** * The Course class represents a course in a curriculum. @@ -96,4 +101,48 @@ public class Course { System.out.println("Course Code: " + courseCode); System.out.println("Course Credits: " + courseCredit); } + + /** + * Writes the information of the course to a file. + * + * @param filename The name of the file to write to. + */ + public void writeToFile(String filename) { + try (PrintWriter writer = new PrintWriter(new FileWriter(filename))) { + writer.println(courseName); + writer.println(courseCode); + writer.println(courseCredit); + // Add any other fields you want to save + } catch (IOException e) { + e.printStackTrace(); + } + } + + /** + * Reads course information from a file and returns a list of courses. + * + * @param filename The name of the file to read from. + * @return A list of Course objects read from the file. + */ + public static List readFromFile(String filename) { + List courses = new ArrayList<>(); + + try (BufferedReader reader = new BufferedReader(new FileReader(filename))) { + String line; + while ((line = reader.readLine()) != null) { + String courseName = line; + String courseCode = reader.readLine(); + int credits = Integer.parseInt(reader.readLine()); + // Read any other fields you saved + Course course = new Course(courseName, courseCode, credits); + courses.add(course); + } + } catch (IOException e) { + e.printStackTrace(); + } + + return courses; + } + + } diff --git a/src/test/java/org/example/CourseTest.java b/src/test/java/org/example/CourseTest.java new file mode 100644 index 0000000..b7c7620 --- /dev/null +++ b/src/test/java/org/example/CourseTest.java @@ -0,0 +1,134 @@ +package org.example; + +import org.junit.jupiter.api.Test; +import java.io.ByteArrayOutputStream; +import java.io.PrintStream; +import static org.junit.Assert.assertEquals; +import java.io.*; +import java.util.List; + +/** + * The CourseTest class contains unit tests for the Course class. + * It tests methods for printing course information, writing course data to a file, + * and reading course data from a file. + */ +class CourseTest { + private static final String TEMP_FILE = "test_course_data.txt"; + + /** + * Tests the printCourseInfo method of the Course class. + * Verifies that the method correctly prints course information to the console. + */ + @Test + void printCourseInfo() { + // Create a new Course object + Course course = new Course("Introduction to Programming", "CS101", 3); + + // Set up the expected output + String expectedCourseName = "Course Name: Introduction to Programming"; + String expectedCourseCode = "Course Code: CS101"; + String expectedCourseCredits = "Course Credits: 3"; + + // Redirect System.out to capture printed output + ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); + PrintStream originalOut = System.out; + System.setOut(new PrintStream(outputStream)); + + // Call the method to be tested + course.printCourseInfo(); + + // Reset System.out + System.setOut(originalOut); + + // Get the printed output + String printedOutput = outputStream.toString().trim(); // trim to remove trailing newline + + // Split the printed output into lines + String[] outputLines = printedOutput.split("\\r?\\n"); + + // Assert that each line matches the expected output + assertEquals(expectedCourseName, outputLines[0].trim()); + assertEquals(expectedCourseCode, outputLines[1].trim()); + assertEquals(expectedCourseCredits, outputLines[2].trim()); + } + + /** + * Tests the writeToFile method of the Course class. + * Verifies that course data is correctly written to a file and can be read back. + */ + @Test + void writeToFile() { + // Create a new course + Course course = new Course("Math", "C101", 3); + + // Write course data to the temporary file + course.writeToFile(TEMP_FILE); + + // Read course data from the temporary file + List courses = Course.readFromFile(TEMP_FILE); + + // Assert that the read data matches the original course + assertEquals(1, courses.size()); + Course readCourse = courses.get(0); + assertEquals("Math", readCourse.getCourseName()); + assertEquals("C101", readCourse.getCourseCode()); + assertEquals(3, readCourse.getCourseCredit()); + + // Delete the temporary file + deleteTempFile(); + } + + /** + * Tests the readFromFile method of the Course class. + * Verifies that course data can be correctly read from a file. + */ + @Test + void readFromFile() { + // Create a temporary file with sample course data + createTempFile("Math", "C101", "3", "Science", "C201", "4"); + + // Read course data from the temporary file + List courses = Course.readFromFile(TEMP_FILE); + + // Assert that the read data matches the original course data + assertEquals(2, courses.size()); + + Course course1 = courses.get(0); + assertEquals("Math", course1.getCourseName()); + assertEquals("C101", course1.getCourseCode()); + assertEquals(3, course1.getCourseCredit()); + + Course course2 = courses.get(1); + assertEquals("Science", course2.getCourseName()); + assertEquals("C201", course2.getCourseCode()); + assertEquals(4, course2.getCourseCredit()); + + // Delete the temporary file + deleteTempFile(); + } + + /** + * Creates a temporary file with the provided data. + * + * @param data The data to write to the file. + */ + private void createTempFile(String... data) { + try (PrintWriter writer = new PrintWriter(new FileWriter(TEMP_FILE))) { + for (String line : data) { + writer.println(line); + } + } catch (IOException e) { + e.printStackTrace(); + } + } + + /** + * Deletes the temporary file used for testing. + */ + private void deleteTempFile() { + File file = new File(TEMP_FILE); + if (file.exists()) { + file.delete(); + } + } +} \ No newline at end of file