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|
package utils
import (
"testing"
"github.com/stretchr/testify/assert"
)
// TestIncludesString is a function.
func TestIncludesString(t *testing.T) {
type scenario struct {
list []string
element string
expected bool
}
scenarios := []scenario{
{
[]string{"a", "b"},
"a",
true,
},
{
[]string{"a", "b"},
"c",
false,
},
{
[]string{"a", "b"},
"",
false,
},
{
[]string{""},
"",
true,
},
}
for _, s := range scenarios {
assert.EqualValues(t, s.expected, IncludesString(s.list, s.element))
}
}
func TestNextIndex(t *testing.T) {
type scenario struct {
testName string
list []int
element int
expected int
}
scenarios := []scenario{
{
// I'm not really fussed about how it behaves here
"no elements",
[]int{},
1,
-1,
},
{
"one element",
[]int{1},
1,
0,
},
{
"two elements",
[]int{1, 2},
1,
1,
},
{
"two elements, giving second one",
[]int{1, 2},
2,
1,
},
{
"three elements, giving second one",
[]int{1, 2, 3},
2,
2,
},
}
for _, s := range scenarios {
t.Run(s.testName, func(t *testing.T) {
assert.EqualValues(t, s.expected, NextIndex(s.list, s.element))
})
}
}
func TestPrevIndex(t *testing.T) {
type scenario struct {
testName string
list []int
element int
expected int
}
scenarios := []scenario{
{
// I'm not really fussed about how it behaves here
"no elements",
[]int{},
1,
0,
},
{
"one element",
[]int{1},
1,
0,
},
{
"two elements",
[]int{1, 2},
1,
0,
},
{
"three elements, giving second one",
[]int{1, 2, 3},
2,
0,
},
}
for _, s := range scenarios {
t.Run(s.testName, func(t *testing.T) {
assert.EqualValues(t, s.expected, PrevIndex(s.list, s.element))
})
}
}
|
