main_test.go

package main

import (
	"errors"
	"testing"
)

func TestParser(t *testing.T) {
	tests := []struct {
		in  string
		out Status
		err error
	}{
		{
			"CO2=1012,HUM=35.2,TMP=29.6",
			Status{
				co2:  1012,
				hum:  35.2,
				temp: 29.6,
			},
			nil,
		},
		{
			"CO2=1012,HUM=35.2,TMP=29.6\r\n",
			Status{
				co2:  1012,
				hum:  35.2,
				temp: 29.6,
			},
			nil,
		},
		{
			"CO2=90,HUM=1.0,TMP=1\r\n",
			Status{
				co2:  90,
				hum:  1.0,
				temp: 1,
			},
			nil,
		},
		{
			"CO2=90",
			Status{},
			ErrInvalidFormat,
		},
		{
			"",
			Status{},
			ErrInvalidFormat,
		},
	}

	for _, tt := range tests {
		stat, err := parser(tt.in)
		if !errors.Is(err, tt.err) {
			t.Errorf("expect error got %v, want %v", stat, tt.out)
		}
		if stat != tt.out {
			t.Errorf("got %v, want %v", stat, tt.out)
		}
	}
}