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8c763fb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | # Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
Describe 'Break statements with classes' -Tags "CI" {
function Get-Errors([string]$sourceCode) {
$tokens = $null
$errors = $null
$ast = [System.Management.Automation.Language.Parser]::ParseInput($sourceCode, [ref] $tokens, [ref] $errors)
return $errors
}
Context 'break is inside a class method' {
It 'reports parse error for break on non-existing label' {
$errors = Get-Errors @'
class A
{
static [int] foo()
{
while (1) { break some_label }
return 1
}
}
'@
$errors.Count | Should -Be 1
$errors[0].ErrorId | Should -BeExactly 'LabelNotFound'
}
It 'reports parse error for break outside of loop' {
$errors = Get-Errors @'
class A
{
static [int] foo()
{
break some_label
return 1
}
}
'@
$errors.Count | Should -Be 1
$errors[0].ErrorId | Should -BeExactly 'LabelNotFound'
}
It 'work fine, when break is legit' {
class C
{
static [int] foo()
{
foreach ($i in 101..102) {
break
}
return $i
}
}
[C]::foo() | Should -Be 101
}
}
Context 'continue inside a class method' {
It 'reports parse error for continue on non-existing label' {
$errors = Get-Errors @'
class A
{
static [int] foo()
{
while (1) { continue some_label }
return 1
}
}
'@
$errors.Count | Should -Be 1
$errors[0].ErrorId | Should -BeExactly 'LabelNotFound'
}
}
Context 'break is in called function' {
It 'doesn''t terminate caller method' -Skip {
function ImBreak() {
break
}
class C
{
static [int] getInt()
{
ImBreak
return 123
}
}
$canary = $false
try {
[C]::getInt() | Should -Be 123
$canary = $true
} finally {
$canary | Should -BeTrue
}
}
It 'doesn''t allow goto outside of function with break' -Skip {
function ImBreak() {
break label1
}
class C
{
static [int] getInt()
{
$count = 123
:label1
foreach ($i in 0..3) {
foreach ($i in 0..3) {
ImBreak
$count++
}
}
return $count
}
}
$canary = $false
try {
[C]::getInt() | Should -Be (123 + 4*4)
$canary = $true
} finally {
$canary | Should -BeTrue
}
}
}
Context 'no classes involved' {
It 'doesn''t report parse error for non-existing label' {
$errors = Get-Errors @'
function foo()
{
while (1) { break some_label }
while (1) { continue another_label }
return 1
}
'@
$errors.Count | Should -Be 0
}
}
}
|