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find_test.go
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find_test.go
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package it
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestIndexOf(t *testing.T) {
r := Range(4)
i := IndexOf(r, 2)
assert.Equal(t, 2, i)
r = Range(4)
i = IndexOf(r, 4)
assert.Equal(t, -1, i)
}
func TestFind(t *testing.T) {
r := Range(4)
_, i, ok := Find(r, func(v int) bool { return v == 2 })
assert.Equal(t, 2, i)
assert.True(t, ok)
r = Range(4)
_, i, ok = Find(r, func(v int) bool { return v == 4 })
assert.Equal(t, -1, i)
assert.False(t, ok)
}
func TestFindOrElse(t *testing.T) {
r := Range(4)
i := FindOrElse(r, -1, func(v int) bool { return v == 2 })
assert.Equal(t, 2, i)
r = Range(4)
i = FindOrElse(r, 0, func(v int) bool { return v == 4 })
assert.Equal(t, 0, i)
}
func TestContains(t *testing.T) {
assert.True(t, Contains(Range(4), 2))
assert.False(t, Contains(Range(4), 4))
assert.False(t, Contains(Range(4), 5))
}
func TestContainsBy(t *testing.T) {
assert.True(t, ContainsBy(Range(4), func(v int) bool { return v == 2 }))
assert.False(t, ContainsBy(Range(4), func(v int) bool { return v == 4 }))
assert.False(t, ContainsBy(Range(4), func(v int) bool { return v == 5 }))
}
func TestMax(t *testing.T) {
r := Range(0)
v, ok := Max(r)
assert.Equal(t, 0, v)
assert.False(t, ok)
r = Range(4)
v, ok = Max(r)
assert.Equal(t, 3, v)
assert.True(t, ok)
r = RangeByStep(3, 0, -1)
v, ok = Max(r)
assert.Equal(t, 3, v)
assert.True(t, ok)
}
func TestMin(t *testing.T) {
r := Range(0)
v, ok := Min(r)
assert.Equal(t, 0, v)
assert.False(t, ok)
r = Range(4)
v, ok = Min(r)
assert.Equal(t, 0, v)
assert.True(t, ok)
r = RangeByStep(3, 0, -1)
v, ok = Min(r)
assert.Equal(t, 1, v)
assert.True(t, ok)
}
func TestMaxBy(t *testing.T) {
r := Range(0)
v, ok := MaxBy(r, func(a, b int) bool { return a > b })
assert.Equal(t, 0, v)
assert.False(t, ok)
r = Range(4)
v, ok = MaxBy(r, func(a, b int) bool { return a > b })
assert.Equal(t, 3, v)
assert.True(t, ok)
r = RangeByStep(3, 0, -1)
v, ok = MaxBy(r, func(a, b int) bool { return a > b })
assert.Equal(t, 3, v)
assert.True(t, ok)
}