bme280_test.go

package bme280

import (
	"strings"
	"testing"
)

type nullBus struct{}

func (*nullBus) ReadReg(byte, []byte) error {
	return nil
}

func (*nullBus) WriteReg(byte, []byte) error {
	return nil
}

func TestRead(t *testing.T) {
	t.Run("fails if uninitialized", func(t *testing.T) {
		driver := New(&nullBus{})

		_, err := driver.Read()
		if err == nil || !strings.HasPrefix(err.Error(), "driver uninitialized") {
			t.Errorf("no or unexpected error: %s", err.Error())
		}
	})
}

type closerBus struct {
	closed bool
}

func (b *closerBus) ReadReg(byte, []byte) error {
	return nil
}

func (b *closerBus) WriteReg(byte, []byte) error {
	return nil
}

func (b *closerBus) Close() error {
	b.closed = true
	return nil
}

func TestClose(t *testing.T) {
	b := closerBus{}
	err := b.Close()
	if err != nil {
		t.Fatalf("close: %v", err)
	}

	if !b.closed {
		t.Errorf("expected closed")
	}
}