1er commit

gradle/wrapper/gradle-wrapper.properties

+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"

gradlew.bat

+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle

+rootProject.name = 'students'
+

src/main/java/Cohort.java

+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A group of students.
+ */
+
+public class Cohort {
+  private final String name;
+  private final List<Student> students;
+
+  /**
+   * Constructs a cohort with a name equals to the specified {@code name} and no students.
+   * @param name the name of the constructed Cohort
+   */
+
+  public Cohort(String name) {
+    this.name = name;
+    this.students = new ArrayList<>();
+  }
+
+  /**
+   * Add the specified {@code student} to the students of the cohort.
+   * @param student the student to be added to the cohort
+   */
+  public void addStudent(Student student){
+    // TODO : add code
+  }
+
+  /**
+   * Returns the list of students of the cohort.
+   * @return the list of students of the cohort.
+   */
+  public List<Student> getStudents(){
+    // TODO : change code
+    return null;
+  }
+
+  /**
+   * Print via the standard output the name of the cohort and all results associated to the students with their average
+   * grade.
+   */
+  public void printStudentsResults(){
+    // TODO : add code
+  }
+
+  /**
+   * Returns the name of the cohort.
+   * @return the name of the cohort
+   */
+  @Override
+  public String toString() {
+    // TODO : change code
+    return null;
+  }
+}

src/main/java/Grade.java

+import java.util.List;
+
+/**
+ * A grade with a float value comprised between 0 and 20.
+ *
+ */
+public class Grade {
+  /**
+   * The maximum value of a grade.
+   */
+  private static final int MAXIMUM_GRADE = 20;
+  private final double value;
+
+  /**
+   * Constructs a grade with a value equals to the specified {@code value}.
+   *
+   * @param value the value of the constructed grade
+   */
+
+  public Grade(double value) {
+    this.value = value;
+  }
+
+  /**
+   * Returns the value of the grade as a double.
+   *
+   * @return the value of the grade
+   */
+
+  public double getValue() {
+    // TODO : change code
+    return 0.;
+  }
+
+  /**
+   * Returns a string representation of the grade in the format X.X/20.
+   * @return a string representation of the grade
+   */
+  @Override
+  public String toString() {
+    // TODO : change code
+    return null;
+  }
+
+  /**
+   * Returns a grade with a value equals to the arithmetic mean of the values of the grade in
+   * the specified list.
+   *
+   * @param grades a list of grades
+   * @return a grade corresponding to the mean of grade in {@code grades}
+   */
+  public static Grade averageGrade(List<Grade> grades){
+    // TODO : change code
+    return null;
+  }
+
+  /**
+   * Determines whether two grades are equal. Two instances of Grade are equal if the values
+   * of their {@code value} member field are the same.
+   * @param o  an object to be compared with this Grade
+   * @return {@code true} if the object to be compared is an instance of Grade and has the same value; {@code false}
+   * otherwise.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+
+    Grade grade = (Grade) o;
+
+    return Double.compare(grade.value, value) == 0;
+  }
+
+  /**
+   * Returns a hash code value for the object.
+   * @return a hash code value for this object.
+   */
+  @Override
+  public int hashCode() {
+    long temp = Double.doubleToLongBits(value);
+    return (int) (temp ^ (temp >>> 32));
+  }
+}

src/main/java/Main.java

+public class Main {
+  public static void main(String[] args){
+    // TODO: add code.
+  }
+}

src/main/java/Student.java

+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A students with results.
+ */
+
+public class Student {
+  private final String firstName;
+  private final String lastName;
+  private final List<TeachingUnitResult> results;
+
+  /**
+   * Constructs a student with the specified first name and last name and no associated results.
+   *
+   * @param firstName the first name of the constructed student
+   * @param lastName the last name of the constructed student
+   */
+
+  public Student(String firstName, String lastName) {
+    this.firstName = firstName;
+    this.lastName = lastName;
+    this.results = new ArrayList<>();
+  }
+
+  /**
+   * Add a grade associated to a teaching unit to the results of the student.
+   *
+   * @param teachingUnitName the name of the teaching unit of the added result
+   * @param grade the grade of the added result
+   */
+  public void addResult(String teachingUnitName, Grade grade){
+    // TODO : add code
+  }
+
+  /**
+   * Returns a string representation of the student in the format first name last name.
+   * @return a string representation of the student
+   */
+  @Override
+  public String toString() {
+    // TODO : change code
+    return null;
+  }
+
+
+  /**
+   * Returns the grades of the student.
+   *
+   * @return the grades of the student
+   */
+  public List<Grade> getGrades(){
+    // TODO : change code
+    return null;
+  }
+
+  /**
+   * Returns the average grade of the student.
+   *
+   * @return the average grade of the student
+   */
+  public Grade averageGrade() {
+    // TODO : change code
+    return null;
+  }
+
+  /**
+   * Print via the standard output the name of the student, all results associated to the students and
+   * the average grade of the student.
+   */
+  public void printResults(){
+    // TODO : add code
+  }
+
+
+  /**
+   * Determines whether or not two students are equal. Two instances of Student are equal if the values
+   * of their {@code firtName}  and {@code lastName} member fields are the same.
+   * @param o  an object to be compared with this Student
+   * @return {@code true} if the object to be compared is an instance of Student and has the same name; {@code false}
+   * otherwise.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+
+    Student student = (Student) o;
+
+    if (!firstName.equals(student.firstName)) return false;
+    return lastName.equals(student.lastName);
+  }
+
+  /**
+   * Returns a hash code value for the object.
+   * @return a hash code value for this object.
+   */
+  @Override
+  public int hashCode() {
+    int result = firstName.hashCode();
+    result = 31 * result + lastName.hashCode();
+    return result;
+  }
+
+
+
+
+}

src/main/java/TeachingUnitResult.java

+/**
+ * A result corresponding to a grade associated with a teaching unit.
+ */
+
+public class TeachingUnitResult {
+  private final String teachingUnitName;
+  private final Grade grade;
+
+
+  /**
+   * Constructs an instance of TeachingUnitResult with a grade equals to the specified {@code grade}
+   * and a teaching unit name equals to the specified {@code teachingUnitName}.
+   *
+   * @param teachingUnitName the name of the teaching unit of the constructed TeachingUnitResult
+   * @param grade the grade of the constructed TeachingUnitResult
+   */
+
+  public TeachingUnitResult(String teachingUnitName, Grade grade) {
+    this.teachingUnitName = teachingUnitName;
+    this.grade = grade;
+  }
+
+  /**
+   * Returns the grade associated to the result.
+   *
+   * @return the grade associated to the result
+   */
+  public Grade getGrade() {
+    // TODO : change code
+    return null;
+  }
+
+  /**
+   * Returns a string representation of the result in the format Name of the teaching unit : X.X.
+   * @return a string representation of the result
+   */
+  @Override
+  public String toString() {
+    // TODO : change code
+    return null;
+  }
+
+
+  /**
+   * Determines whether or not two results are equal. Two instances of TeachingUnitResult are equal if the values
+   * of their {@code teachingUnitName} and {@code grade} member fields are the same.
+   * @param o  an object to be compared with this TeachingUnitResult
+   * @return {@code true} if the object to be compared is an instance of TeachingUnitResult and has the same grad and
+   * teaching unit name; {@code false} otherwise.
+   */
+  @Override
+  public boolean equals(Object o) {
+    if (this == o) return true;
+    if (o == null || getClass() != o.getClass()) return false;
+
+    TeachingUnitResult that = (TeachingUnitResult) o;
+
+    if (!teachingUnitName.equals(that.teachingUnitName)) return false;
+    return grade.equals(that.grade);
+  }
+
+  /**
+   * Returns a hash code value for the object.
+   * @return a hash code value for this object.
+   */
+  @Override
+  public int hashCode() {
+    int result = teachingUnitName.hashCode();
+    result = 31 * result + grade.hashCode();
+    return result;
+  }
+}

src/test/java/StandardOutputSandbox.java

+import java.io.ByteArrayOutputStream;
+import java.io.OutputStream;
+import java.io.PrintStream;
+
+
+public class StandardOutputSandbox implements Runnable {
+  static String NEW_LINE = System.getProperty("line.separator");
+  private final Runnable runnable;
+  private OutputStream outputStream;
+
+  StandardOutputSandbox(Runnable runnable) {
+    this.runnable = runnable;
+  }
+
+  public void run(){
+    outputStream = new ByteArrayOutputStream();
+    PrintStream printStream = new PrintStream(outputStream);
+    System.setOut(printStream);
+    runnable.run();
+    PrintStream originalOut = System.out;
+    System.setOut(originalOut);
+  }
+
+  String getProducedOutput() {
+    return outputStream.toString();
+  }
+}

src/test/java/TestCohort.java

+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class TestCohort {
+  private static final Cohort cohort = new Cohort("L2 informatique");
+  private static final Student davidGoodenough = new Student("David", "Goodenough");
+  private static final Student jeanMichelBruitage = new Student("Jean-Michel", "Bruitage");
+  private static final Cohort l1Descartes = new Cohort("L1 Descartes");
+
+  @BeforeAll
+  static void addStudentsToCohort(){
+    jeanMichelBruitage.addResult("Programmation 2", TestGrade.zero);
+    jeanMichelBruitage.addResult("Structures discrètes", TestGrade.twenty);
+    davidGoodenough.addResult("Programmation 2", TestGrade.ten);
+    davidGoodenough.addResult("Structures discrètes", TestGrade.ten);
+    cohort.addStudent(davidGoodenough);
+    cohort.addStudent(jeanMichelBruitage);
+  }
+  @Test
+  void testGetStudentsIsEmpty_whenEmptyCohort(){
+    assertThat(l1Descartes.getStudents()).isEmpty();
+  }
+
+  @Test
+  void testGetStudents_whenCohortContainsStudents(){
+    assertThat(cohort.getStudents()).isEqualTo(List.of(davidGoodenough, jeanMichelBruitage));
+  }
+
+  @Test
+  void testPrintStudentsResults_whenCohortIsEmpty() {
+    StandardOutputSandbox standardOutputSandbox = new StandardOutputSandbox(l1Descartes::printStudentsResults);
+    String expectedOutput = "L1 Descartes" + StandardOutputSandbox.NEW_LINE + StandardOutputSandbox.NEW_LINE;
+    standardOutputSandbox.run();
+    assertThat(standardOutputSandbox.getProducedOutput()).isEqualTo(expectedOutput);
+  }
+
+  @Test
+  void testPrintStudentsResults_whenCohortContainsStudents() {
+    StandardOutputSandbox standardOutputSandbox = new StandardOutputSandbox(cohort::printStudentsResults);
+    String expectedOutput = "L2 informatique" + StandardOutputSandbox.NEW_LINE + StandardOutputSandbox.NEW_LINE
+            + "David Goodenough" + StandardOutputSandbox.NEW_LINE
+            + "Programmation 2 : 10.0/20" + StandardOutputSandbox.NEW_LINE
+            + "Structures discrètes : 10.0/20" + StandardOutputSandbox.NEW_LINE
+            + "Note moyenne : 10.0/20" + StandardOutputSandbox.NEW_LINE + StandardOutputSandbox.NEW_LINE
+            + "Jean-Michel Bruitage" + StandardOutputSandbox.NEW_LINE
+            + "Programmation 2 : 0.0/20" + StandardOutputSandbox.NEW_LINE
+            + "Structures discrètes : 20.0/20" + StandardOutputSandbox.NEW_LINE
+            + "Note moyenne : 10.0/20" + StandardOutputSandbox.NEW_LINE + StandardOutputSandbox.NEW_LINE;
+    standardOutputSandbox.run();
+    assertThat(standardOutputSandbox.getProducedOutput()).isEqualTo(expectedOutput);
+  }
+}

src/test/java/TestGrade.java

+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.within;
+
+class TestGrade {
+  static Grade twenty = new Grade(20);
+  static Grade zero = new Grade(0);
+  static Grade ten = new Grade(10);
+  private static final double EPSILON = 0.000001d;
+  private static final List<Grade> grades = List.of(zero, twenty, ten);
+  private static final List<Grade> gradesZero = List.of(zero, zero);
+
+  @Test
+  void testHashCode(){
+    assertThat(twenty.hashCode()).isEqualTo(new Grade(20).hashCode())
+            .isNotEqualTo(ten.hashCode())
+            .isNotEqualTo(zero.hashCode());
+  }
+
+  @Test
+  void testEquals(){
+    assertThat(twenty).isEqualTo(new Grade(20))
+            .isNotEqualTo(ten)
+            .isNotEqualTo(zero)
+            .isNotEqualTo(null)
+            .isNotEqualTo("20.0/20")
+            .isNotEqualTo(20.0);
+  }
+
+  @Test
+  void testGetValue() {
+    assertThat(twenty.getValue()).isCloseTo(20, within(EPSILON));
+    assertThat(zero.getValue()).isCloseTo(0, within(EPSILON));
+  }
+
+  @Test
+  void testToString() {
+    assertThat(twenty.toString()).isEqualTo("20.0/20");
+    assertThat(zero.toString()).isEqualTo("0.0/20");
+
+  }
+
+  @Test
+  void testAverageGrade(){
+    assertThat(Grade.averageGrade(grades)).isEqualTo(ten);
+    assertThat(Grade.averageGrade(gradesZero)).isEqualTo(zero);
+  }
+}

src/test/java/TestStudent.java

+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class TestStudent {
+  private static final Student johnWoo = new Student("John", "Woo");
+  private static final Student jeanMichelBruitage = new Student("Jean-Michel", "Bruitage");
+  private static final Student davidGoodenough = new Student("David", "Goodenough");
+
+  @BeforeAll
+  static void addResultsToStudents(){
+    johnWoo.addResult("Programmation 2", TestGrade.twenty);
+    johnWoo.addResult("Structures discrètes", TestGrade.twenty);
+    davidGoodenough.addResult("Programmation 2", TestGrade.ten);
+    davidGoodenough.addResult("Structures discrètes", TestGrade.zero);
+    jeanMichelBruitage.addResult("Programmation 2", TestGrade.ten);
+    jeanMichelBruitage.addResult("Structures discrètes", TestGrade.twenty);
+  }
+
+  @Test
+  void testHashCode(){
+    assertThat(jeanMichelBruitage.hashCode()).isEqualTo(new Student("Jean-Michel", "Bruitage").hashCode())
+            .isNotEqualTo(davidGoodenough.hashCode());
+  }
+
+  @Test
+  void testEquals(){
+    assertThat(jeanMichelBruitage).isEqualTo(new Student("Jean-Michel", "Bruitage"))
+            .isNotEqualTo(davidGoodenough)
+            .isNotEqualTo(null)
+            .isNotEqualTo("Jean-Michel Bruitage");
+  }
+
+  @Test
+  void testToString() {
+    assertThat(jeanMichelBruitage.toString()).isEqualTo("Jean-Michel Bruitage");
+    assertThat(davidGoodenough.toString()).isEqualTo("David Goodenough");
+  }
+
+  @Test
+  void testGetGrades() {
+    assertThat(johnWoo.getGrades()).isEqualTo(List.of(TestGrade.twenty, TestGrade.twenty));
+    assertThat(davidGoodenough.getGrades()).isEqualTo(List.of(TestGrade.ten, TestGrade.zero));
+    assertThat(jeanMichelBruitage.getGrades()).isEqualTo(List.of(TestGrade.ten, TestGrade.twenty));
+  }
+
+  @Test
+  void testGetAverageGrade() {
+    assertThat(johnWoo.averageGrade()).isEqualTo(TestGrade.twenty);
+    assertThat(davidGoodenough.averageGrade()).isEqualTo(new Grade(5));
+    assertThat(jeanMichelBruitage.averageGrade()).isEqualTo(new Grade(15));
+  }
+
+  @Test
+  void testPrintResults() {
+    StandardOutputSandbox standardOutputSandbox = new StandardOutputSandbox(johnWoo::printResults);
+    String expectedOutput =
+            "John Woo" + StandardOutputSandbox.NEW_LINE
+            + "Programmation 2 : 20.0/20" + StandardOutputSandbox.NEW_LINE
+            + "Structures discrètes : 20.0/20" + StandardOutputSandbox.NEW_LINE
+            + "Note moyenne : 20.0/20" + StandardOutputSandbox.NEW_LINE;
+    standardOutputSandbox.run();
+    assertThat(standardOutputSandbox.getProducedOutput()).isEqualTo(expectedOutput);
+  }
+}
\ No newline at end of file

src/test/java/TestTeachingUnitResult.java

+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class TestTeachingUnitResult {
+  private static final TeachingUnitResult twentyAtProg =
+          new TeachingUnitResult("Programmation 2", TestGrade.twenty);
+  private static final TeachingUnitResult zeroAtStructDiscrete =
+          new TeachingUnitResult("Structures discrètes", TestGrade.zero);
+
+  @Test
+  void testGetGrade() {
+    assertThat(twentyAtProg.getGrade()).isEqualTo(TestGrade.twenty);
+    assertThat(zeroAtStructDiscrete.getGrade()).isEqualTo(TestGrade.zero);
+  }
+
+  @Test
+  void testToString() {
+    assertThat(twentyAtProg.toString()).isEqualTo("Programmation 2 : 20.0/20");
+    assertThat(zeroAtStructDiscrete.toString()).isEqualTo("Structures discrètes : 0.0/20");
+  }
+}