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class_test.go
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class_test.go
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package errors
import (
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"testing"
)
// TestClass tests creation of the `Major` subclassification.
func TestClass(t *testing.T) {
t.Run("Major", func(t *testing.T) {
resetEmptyContainer()
firstMjr, err := NewMajor()
require.NoError(t, err)
assert.Equal(t, 1, int(firstMjr))
var secondMjr Major
assert.NotPanics(t, func() { secondMjr = MustNewMajor() })
assert.Equal(t, 2, int(secondMjr))
firstClass, err := NewMajorClass(firstMjr)
if assert.NoError(t, err) {
assert.Equal(t, firstMjr, firstClass.Major())
}
var secondClass Class
assert.NotPanics(t, func() { secondClass = MustNewMajorClass(secondMjr) })
assert.Equal(t, secondMjr, secondClass.Major())
var notDefinedMajor Major
assert.Panics(t, func() { MustNewMajorClass(notDefinedMajor) })
minorsLen := len(container.minors)
indexesLen := len(container.indexes)
topMjr := container.major
for i := 0; i < 20; i++ {
_, err := NewMajor()
require.NoError(t, err)
}
assert.NotEqual(t, minorsLen, len(container.minors))
assert.NotEqual(t, indexesLen, len(container.indexes))
assert.Equal(t, topMjr+20, container.major)
// on testing purpose change top major to max uint8 value.
maxMajor := Major((2 << 7) - 1)
container.major = maxMajor
_, err = NewMajor()
require.Error(t, err)
assert.Panics(t, func() { MustNewMajor() })
})
t.Run("Minor", func(t *testing.T) {
resetEmptyContainer()
mjr, err := NewMajor()
require.NoError(t, err)
assert.Equal(t, 1, int(mjr))
mnr1, err := NewMinor(mjr)
if assert.NoError(t, err) {
assert.Equal(t, 1, int(mnr1))
}
var mnr2 Minor
getMnr2 := func() { mnr2 = MustNewMinor(mjr) }
assert.NotPanics(t, getMnr2)
assert.Equal(t, 2, int(mnr2))
assert.Panics(t, func() { MustNewMinor(Major(0)) })
firstClass, err := NewMinorClass(mjr, mnr1)
if assert.NoError(t, err) {
assert.Equal(t, mjr, firstClass.Major())
assert.Equal(t, mnr1, firstClass.Minor())
assert.False(t, firstClass.Index().Valid())
}
var secondClass Class
assert.NotPanics(t, func() { secondClass = MustNewMinorClass(mjr, mnr2) })
assert.Equal(t, mjr, secondClass.Major())
assert.Equal(t, mnr2, secondClass.Minor())
assert.False(t, secondClass.Index().Valid(), "%b", secondClass)
var (
invMjr Major
invMnr Minor
)
assert.False(t, invMjr.Valid())
assert.False(t, invMnr.Valid())
_, err = NewMinorClass(invMjr, mnr1)
assert.Error(t, err)
assert.Panics(t, func() { MustNewMinorClass(mjr, invMnr) })
initLen := len(container.indexes[mjr])
for i := 0; i < 20; i++ {
_, err = NewMinor(mjr)
assert.NoError(t, err)
}
assert.NotEqual(t, initLen, len(container.indexes[mjr]))
container.minors[mjr] = maxMinorValue
_, err = NewMinor(mjr)
require.Error(t, err)
assert.Panics(t, func() { MustNewMinor(mjr) })
})
t.Run("Index", func(t *testing.T) {
resetEmptyContainer()
mjr, err := NewMajor()
require.NoError(t, err)
assert.True(t, mjr.Valid())
mnr, err := NewMinor(mjr)
require.NoError(t, err)
inx1, err := NewIndex(mjr, mnr)
if assert.NoError(t, err) {
assert.Equal(t, 1, int(inx1))
assert.True(t, inx1.Valid())
}
var inx2 Index
assert.False(t, inx2.Valid())
if assert.NotPanics(t, func() { inx2 = MustNewIndex(mjr, mnr) }) {
assert.Equal(t, 2, int(inx2))
assert.True(t, inx2.Valid())
}
var (
invMjr Major
invMnr Minor
)
require.False(t, invMjr.Valid())
require.False(t, invMnr.Valid())
_, err = NewIndex(invMjr, mnr)
assert.Error(t, err)
assert.Panics(t, func() { MustNewIndex(mjr, invMnr) })
inx1Class, err := NewClass(mjr, mnr, inx1)
if assert.NoError(t, err) {
assert.Equal(t, mjr, inx1Class.Major())
assert.Equal(t, mnr, inx1Class.Minor())
assert.Equal(t, inx1, inx1Class.Index())
}
var inx2Class Class
assert.False(t, inx2Class.Major().Valid())
assert.False(t, inx2Class.Minor().Valid())
assert.False(t, inx2Class.Index().Valid())
if assert.NotPanics(t, func() { inx2Class = MustNewClass(mjr, mnr, inx2) }) {
assert.Equal(t, mjr, inx2Class.Major())
assert.Equal(t, mnr, inx2Class.Minor())
assert.Equal(t, inx2, inx2Class.Index())
}
assert.NotEqual(t, inx2Class, inx1Class)
var invIndex Index
assert.Panics(t, func() { MustNewClass(mjr, invMnr, inx2) })
assert.Panics(t, func() { MustNewClass(invMjr, mnr, inx2) })
assert.Panics(t, func() { MustNewClass(mjr, mnr, invIndex) })
c, err := NewClassWIndex(mjr, mnr)
require.NoError(t, err)
var c2 Class
assert.NotPanics(t, func() { c2 = MustNewClassWIndex(mjr, mnr) })
assert.NotEqual(t, c, c2)
_, err = NewClassWIndex(invMjr, mnr)
assert.Error(t, err)
_, err = NewClassWIndex(mjr, invMnr)
assert.Error(t, err)
assert.Panics(t, func() { MustNewClassWIndex(invMjr, mnr) })
container.indexes[mjr][mnr] = maxIndexValue
_, err = NewIndex(mjr, mnr)
require.Error(t, err)
assert.Panics(t, func() { MustNewIndex(mjr, mnr) })
})
}
func resetContainer() {
container = &classContainer{}
initClasses()
}
func resetEmptyContainer() {
container = &classContainer{}
}