added test for float input validation

weather_test.go

@@ -28,6 +28,20 @@ func TestWeatherHandler(t *testing.T) {
 	handler.ServeHTTP(rr, req)
 }
 
+func TestGetFloat(t *testing.T) {
+	var test float64
+	test, err := GetFloat("3.1410230")
+	if err != nil || test != 3.1410230 {
+		t.Errorf("should not return error: %s", err)
+	}
+
+	test, err = GetFloat("bogus")
+	if err == nil && test != 0 {
+		t.Errorf("Error should be present, but got value: %f  and error: %s", test, err)
+	}
+
+}
+
 func TestGetSingleForecast(t *testing.T) {
 	latitude :=	58.8569687273594
 	longitude := 5.85660630854479