Added unit tests

model/windModel_test.go

@@ -0,0 +1,28 @@
+package model
+
+import (
+	"testing"
+)
+
+type TestEntry struct {
+	Name     string
+	Input    float64
+	Expected string
+}
+
+func TestGetCardinalDir(t *testing.T) {
+	tests := []TestEntry{
+		{"Bounded value", 65.4, "ENE"},
+		{"Out of bound value", 450.3, "E"},
+	}
+
+	for _, test := range tests {
+		t.Run(test.Name, func(t *testing.T) {
+			got, _ := GetCardinalDir(test.Input)
+
+			if got != test.Expected {
+				t.Errorf("Got %s, wanted %s", got, test.Expected)
+			}
+		})
+	}
+}