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.

1 files changed, 36 insertions, 0 deletions

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