passing canvas models tests

Management.Test/Features/SemesterPlannerTests.cs

@@ -1,10 +1,36 @@
+using CanvasModel.EnrollmentTerms;
+
 namespace Management.Test;
 
 public class SemesterPlannerTests
 {
   [Test]
-  public void TestCanCreatePlannerFromCanvasSemester()
+  public void TestCanCreatePlanner()
   {
-    // var 
+    var canvasTerm = new EnrollmentTermModel(
+      Id: 1,
+      Name: "one",
+      StartAt: new DateTime(2022, 1, 1),
+      EndAt: new DateTime(2022, 1, 2)
+    );
+
+    var semester = new SemesterPlanner(canvasTerm);
+
+    semester.Months.Count().Should().Be(1);
+  }
+  
+  [Test]
+  public void TestNewPlannerHasCorrectNumberOfMonths()
+  {
+    var canvasTerm = new EnrollmentTermModel(
+      Id: 1,
+      Name: "one",
+      StartAt: new DateTime(2022, 1, 1),
+      EndAt: new DateTime(2022, 2, 1)
+    );
+
+    var semester = new SemesterPlanner(canvasTerm);
+
+    semester.Months.Count().Should().Be(2);
   }
 }

Management/Features/Calendar/SemesterPlanner.cs

@@ -1,4 +1,13 @@
+using CanvasModel.EnrollmentTerms;
+
 public class SemesterPlanner
 {
+  public IEnumerable<CalendarMonth> Months { get; }
+  public SemesterPlanner(EnrollmentTermModel canvasTerm)
+  {
+    var monthsInTerm = canvasTerm.EndAt?.Month - canvasTerm.StartAt?.Month
+      ?? throw new Exception($"Canvas Term must have a start and end date. Term: {canvasTerm.Id}, start: {canvasTerm.StartAt}, end: {canvasTerm.EndAt}");
 
+    Months = Enumerable.Range(1, monthsInTerm).Select(_ => new CalendarMonth());
+  }
 }