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package calc
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestNumbers(t *testing.T) {
result, err := calc(`1`)
require.NoError(t, err)
require.EqualValues(t, 1, result)
}
func TestAddition(t *testing.T) {
result, err := calc(`1+1`)
require.NoError(t, err)
require.EqualValues(t, 2, result)
}
func TestSubtraction(t *testing.T) {
result, err := calc(`1-1`)
require.NoError(t, err)
require.EqualValues(t, 0, result)
}
func TestDivision(t *testing.T) {
result, err := calc(`1/2`)
require.NoError(t, err)
require.EqualValues(t, .5, result)
}
func TestMultiplication(t *testing.T) {
result, err := calc(`1*2`)
require.NoError(t, err)
require.EqualValues(t, 2, result)
}
func TestOrderOfOperations(t *testing.T) {
result, err := calc(`1+10*2`)
require.NoError(t, err)
require.EqualValues(t, 21, result)
}
func TestParenthesis(t *testing.T) {
result, err := calc(`(1+10)*2`)
require.NoError(t, err)
require.EqualValues(t, 22, result)
}
func TestRecursive(t *testing.T) {
result, err := calc(`(1+(2*(3-(4/(5)))))`)
require.NoError(t, err)
require.EqualValues(t, 5.4, result)
}
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