package tst

import (
	"strconv"
	"testing"
)

// --- Must -----------------------------------------------------------------

func TestMust_NoError_Int(t *testing.T) {
	v := Must(123, nil)(t)
	AssertEqual(t, v, 123)
}

func TestMust_NoError_String(t *testing.T) {
	v := Must("hello", nil)(t)
	AssertEqual(t, v, "hello")
}

func TestMust_NoError_Slice(t *testing.T) {
	v := Must([]int{1, 2, 3}, nil)(t)
	AssertArrayEqual(t, v, []int{1, 2, 3})
}

func TestMust_NoError_Struct(t *testing.T) {
	type s struct {
		X int
		Y string
	}
	v := Must(s{X: 7, Y: "abc"}, nil)(t)
	AssertEqual(t, v, s{X: 7, Y: "abc"})
}

func TestMust_StrconvAtoi(t *testing.T) {
	v := Must(strconv.Atoi("42"))(t)
	AssertEqual(t, v, 42)
}

func TestMust_ZeroValueOnNoError(t *testing.T) {
	v := Must(0, nil)(t)
	AssertEqual(t, v, 0)
}

func TestMust_ReturnedFnIsNotNil(t *testing.T) {
	fn := Must("anything", nil)
	if fn == nil {
		t.Fatal("Must should return a non-nil function")
	}
}