Use Apache Commons Math for calculations and implement service tests

Implement TestResultService tests and supporting entity builders.
Switch to Apache Commons Math library for descriptive statistics.

3 files changed, 129 insertions, 0 deletions

diff --git a/src/test/java/com/stileeducation/markr/util/StudentBuilder.java b/src/test/java/com/stileeducation/markr/util/StudentBuilder.java
new file mode 100644
index 0000000..5189f19
--- /dev/null
+++ b/src/test/java/com/stileeducation/markr/util/StudentBuilder.java
@@ -0,0 +1,50 @@
+package com.stileeducation.markr.util;
+
+import com.stileeducation.markr.entity.Student;
+import com.stileeducation.markr.entity.TestResult;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class StudentBuilder {
+  private Long id;
+  private String firstName;
+  private String lastName;
+  private String studentNumber;
+  private Set<TestResult> testResults = new HashSet<>();
+
+  public StudentBuilder withId(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  public StudentBuilder withFirstName(String firstName) {
+    this.firstName = firstName;
+    return this;
+  }
+
+  public StudentBuilder withLastName(String lastName) {
+    this.lastName = lastName;
+    return this;
+  }
+
+  public StudentBuilder withStudentNumber(String studentNumber) {
+    this.studentNumber = studentNumber;
+    return this;
+  }
+
+  public StudentBuilder withTestResults(Set<TestResult> testResults) {
+    this.testResults = testResults;
+    return this;
+  }
+
+  public Student build() {
+    Student student = new Student();
+    student.setId(id);
+    student.setFirstName(firstName);
+    student.setLastName(lastName);
+    student.setStudentNumber(studentNumber);
+    student.setTestResults(testResults);
+    return student;
+  }
+}
\ No newline at end of file
diff --git a/src/test/java/com/stileeducation/markr/util/TestBuilder.java b/src/test/java/com/stileeducation/markr/util/TestBuilder.java
new file mode 100644
index 0000000..5c513f3
--- /dev/null
+++ b/src/test/java/com/stileeducation/markr/util/TestBuilder.java
@@ -0,0 +1,43 @@
+package com.stileeducation.markr.util;
+
+import com.stileeducation.markr.entity.Test;
+import com.stileeducation.markr.entity.TestResult;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class TestBuilder {
+  private Long id;
+  private String testId;
+  private Integer marksAvailable;
+  private Set<TestResult> testResults = new HashSet<>();
+
+  public TestBuilder withId(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  public TestBuilder withTestId(String testId) {
+    this.testId = testId;
+    return this;
+  }
+
+  public TestBuilder withMarksAvailable(Integer marksAvailable) {
+    this.marksAvailable = marksAvailable;
+    return this;
+  }
+
+  public TestBuilder withTestResults(Set<TestResult> testResults) {
+    this.testResults = testResults;
+    return this;
+  }
+
+  public Test build() {
+    Test test = new Test();
+    test.setId(id);
+    test.setTestId(testId);
+    test.setMarksAvailable(marksAvailable);
+    test.setTestResults(testResults);
+    return test;
+  }
+}
diff --git a/src/test/java/com/stileeducation/markr/util/TestResultBuilder.java b/src/test/java/com/stileeducation/markr/util/TestResultBuilder.java
new file mode 100644
index 0000000..db26e15
--- /dev/null
+++ b/src/test/java/com/stileeducation/markr/util/TestResultBuilder.java
@@ -0,0 +1,36 @@
+package com.stileeducation.markr.util;
+
+import com.stileeducation.markr.entity.Student;
+import com.stileeducation.markr.entity.Test;
+import com.stileeducation.markr.entity.TestResult;
+
+public class TestResultBuilder {
+  private Long id;
+  private Student student;
+  private Test test;
+  private Integer marksAwarded;
+
+  public TestResultBuilder withId(Long id) {
+    this.id = id;
+    return this;
+  }
+
+  public TestResultBuilder withStudent(Student student) {
+    this.student = student;
+    return this;
+  }
+
+  public TestResultBuilder withTest(Test test) {
+    this.test = test;
+    return this;
+  }
+
+  public TestResultBuilder withMarksAwarded(Integer marksAwarded) {
+    this.marksAwarded = marksAwarded;
+    return this;
+  }
+
+  public TestResult build() {
+    return new TestResult(id, student, test, marksAwarded);
+  }
+}
\ No newline at end of file