Merge branch 'test-assignments-due'

main.go

@@ -10,5 +10,9 @@ func main() {
 	fmt.Println("Hello COS316!")
 
 	assignment_due := utils.AssignmentDueToday(time.Now())
-	fmt.Println("Could there be an assignment due today?", assignment_due)
+	fmt.Printf(
+		"Today is a %s. Could there be an assignment due today? %t\n",
+		time.Now().Weekday(),
+		assignment_due,
+	)
 }

utils/assignments_test.go

@@ -0,0 +1,30 @@
+package utils
+
+import (
+	"testing"
+	"math/rand"
+	"time"
+)
+
+// https://stackoverflow.com/a/43497333, CC BY-SA 3.0 @mkopriva
+func randdate() time.Time {
+    min := time.Date(1970, 1, 0, 0, 0, 0, 0, time.UTC).Unix()
+    max := time.Date(2070, 1, 0, 0, 0, 0, 0, time.UTC).Unix()
+    delta := max - min
+
+    sec := rand.Int63n(delta) + min
+    return time.Unix(sec, 0)
+}
+
+func TestAssignmentDueToday(t *testing.T) {
+	for i := 0; i < 1000; i++ {
+		// Generate a random date. If its a Wednesday,
+		// an assignment should be due...
+		date := randdate()
+
+		if (date.Weekday() == time.Wednesday) != AssignmentDueToday(date) {
+			t.Errorf("Assignment should be due on %s!", date);
+		}
+	}
+}
+