293 lines
9.1 KiB
PowerShell
293 lines
9.1 KiB
PowerShell
# Copyright (c) Microsoft Corporation.
|
|
# Licensed under the MIT License.
|
|
|
|
Describe 'Line Continuance' -Tags 'CI' {
|
|
BeforeAll {
|
|
function ExecuteCommand {
|
|
param ([string]$command)
|
|
[powershell]::Create().AddScript($command).Invoke()
|
|
}
|
|
|
|
$whitespace = "`t `f`v$([char]0x00a0)$([char]0x0085)"
|
|
}
|
|
|
|
Context 'Lines ending with a backtick that parse and execute without error' {
|
|
It 'Lines ending with a single backtick' {
|
|
$script = @'
|
|
'Hello' + `
|
|
' world'
|
|
'@
|
|
ExecuteCommand $script | Should -BeExactly 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a single backtick followed only by a CR (old-style Mac line ending)' {
|
|
$script = "'Hello' + ```r' world'"
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a single backtick followed by whitespace' {
|
|
$script = @'
|
|
# The first line of this command ends with trailing whitespace
|
|
'Hello' + `
|
|
'@ + $whitespace + @'
|
|
|
|
' world'
|
|
'@
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a single backtick followed by whitespace and a comment' {
|
|
$script = @'
|
|
'Hello' + ` # You can place comments after whitespace following backticks
|
|
' world'
|
|
'@
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a single backtick followed by a comment line and then the continued line' {
|
|
$script = @'
|
|
'Hello' + `
|
|
# You can place comments in the middle of a continued line
|
|
' world'
|
|
'@
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
}
|
|
|
|
Context 'Lines ending with a backtick that do not parse' {
|
|
It 'Lines ending with a single backtick followed immediately by a comment' {
|
|
$script = @'
|
|
'Hello' + `# This is not a valid comment
|
|
' world'
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'ExpectedValueExpression'
|
|
}
|
|
|
|
It 'Lines ending with two backticks' {
|
|
$script = @'
|
|
'Hello' + ``
|
|
' world'
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'ExpectedValueExpression'
|
|
}
|
|
}
|
|
|
|
Context 'Lines ending with a pipe that parse and execute without error' {
|
|
It 'Lines ending with a pipe' {
|
|
$script = @'
|
|
'Hello' |
|
|
ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a pipe followed only by a CR (old-style Mac line ending)' {
|
|
$script = "'Hello' |`r ForEach-Object {`"`$_ world`"}"
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a pipe followed by whitespace' {
|
|
$script = @'
|
|
# The next line ends with trailing whitespace
|
|
'Hello' |
|
|
'@ + $whitespace + @'
|
|
|
|
ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a pipe followed by a comment' {
|
|
$script = @'
|
|
'Hello' |# You can place comments after whitespace following pipes
|
|
ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
|
|
It 'Lines ending with a pipe followed by a comment line and then the continued command' {
|
|
$script = @'
|
|
'Hello' |
|
|
# You can place comments in the middle of a continued pipeline
|
|
ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -Be 'Hello world'
|
|
}
|
|
}
|
|
|
|
Context 'Lines ending with a pipe that do not parse' {
|
|
It 'Lines ending with a single pipe followed by an empty line' {
|
|
$script = @'
|
|
'Hello' |
|
|
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'EmptyPipeElement'
|
|
}
|
|
|
|
It 'Lines ending with a single pipe followed by a line that starts with a pipe' {
|
|
$script = @'
|
|
'Hello' |
|
|
|
|
|
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'EmptyPipeElement'
|
|
}
|
|
}
|
|
|
|
Context 'Parsing and executing without error while using a pipe at the beginning of a line to continue the previous line' {
|
|
It 'Line continuance using a pipe at the start of a subsequent line' {
|
|
$script = @'
|
|
'Hello'
|
|
| ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -BeExactly 'Hello world'
|
|
}
|
|
|
|
It 'Line continuance using a pipe at the start of a subsequent line after a CR (old-style Mac line ending)' {
|
|
$script = "'Hello'`r | ForEach-Object {`"`$_ world`"}"
|
|
ExecuteCommand $script | Should -BeExactly 'Hello world'
|
|
}
|
|
|
|
It 'Longer line continuance using pipes at the start of subsequent lines' {
|
|
$script = @'
|
|
1..10
|
|
| ForEach-Object {($_ -shl 1) + $_}
|
|
| Where-Object {$_ % 2 -eq 0}
|
|
| Sort-Object -Descending
|
|
'@
|
|
ExecuteCommand $script | Should -Be @(30, 24, 18, 12, 6)
|
|
}
|
|
|
|
It 'Line continuance using a comment line followed by a pipe at the start of a subsequent line' {
|
|
$script = @'
|
|
'Hello'
|
|
# You can place comments before continued pipelines
|
|
| ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -BeExactly 'Hello world'
|
|
}
|
|
|
|
It 'Longer line continuance using pipes at the start of subsequent lines (with comments)' {
|
|
$script = @'
|
|
1..10
|
|
# Times three
|
|
| ForEach-Object {($_ -shl 1) + $_}
|
|
# Even only
|
|
| Where-Object {$_ % 2 -eq 0}
|
|
# Reverse order
|
|
| Sort-Object -Descending
|
|
'@
|
|
ExecuteCommand $script | Should -Be @(30, 24, 18, 12, 6)
|
|
}
|
|
|
|
It 'Line continuance using a pipe on a line by itself' {
|
|
$script = @'
|
|
'Hello'
|
|
|
|
|
ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -BeExactly 'Hello world'
|
|
}
|
|
|
|
|
|
It 'Longer line continuance using pipes on lines by themselves' {
|
|
$script = @'
|
|
1..10
|
|
|
|
|
ForEach-Object {($_ -shl 1) + $_}
|
|
|
|
|
Where-Object {$_ % 2 -eq 0}
|
|
|
|
|
Sort-Object -Descending
|
|
'@
|
|
ExecuteCommand $script | Should -Be @(30, 24, 18, 12, 6)
|
|
}
|
|
|
|
It 'Line continuance using a pipe on a line by itself (with comments)' {
|
|
$script = @'
|
|
'Hello'
|
|
|
|
|
# You can place comments before continued pipelines
|
|
ForEach-Object {"$_ world"}
|
|
'@
|
|
ExecuteCommand $script | Should -BeExactly 'Hello world'
|
|
}
|
|
|
|
It 'Longer line continuance using pipes on lines by themselves (with comments)' {
|
|
$script = @'
|
|
1..10
|
|
|
|
|
# Times three
|
|
ForEach-Object {($_ -shl 1) + $_}
|
|
|
|
|
# Even only
|
|
Where-Object {$_ % 2 -eq 0}
|
|
|
|
|
# Reverse order
|
|
Sort-Object -Descending
|
|
'@
|
|
ExecuteCommand $script | Should -Be @(30, 24, 18, 12, 6)
|
|
}
|
|
}
|
|
|
|
Context 'Lines starting with a pipe that do not parse' {
|
|
It 'Lines starting with a single pipe with nothing after it' {
|
|
$script = @'
|
|
'Hello'
|
|
| # Nothing to see here, move along
|
|
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'EmptyPipeElement'
|
|
}
|
|
|
|
It 'Lines starting with a single pipe with blank lines after it' {
|
|
$script = @'
|
|
'Hello'
|
|
|
|
|
|
|
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'EmptyPipeElement'
|
|
}
|
|
|
|
It 'Lines starting with a single pipe that have a blank line before it' {
|
|
$script = @'
|
|
'Hello'
|
|
|
|
| ForEach-Object {"$_ world"}
|
|
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'EmptyPipeElement'
|
|
}
|
|
|
|
It 'Lines starting with a single pipe that have a line with whitespace before it' {
|
|
$script = @"
|
|
'Hello'
|
|
$whitespace
|
|
| ForEach-Object {"`$_ world"}
|
|
"@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'EmptyPipeElement'
|
|
}
|
|
|
|
It 'Lines starting with a single pipe that have a line with nothing but a backtick before it' {
|
|
$script = @'
|
|
'Hello'
|
|
`
|
|
| ForEach-Object {"$_ world"}
|
|
|
|
'@
|
|
$err = { ExecuteCommand $script } | Should -Throw -ErrorId 'ParseException' -PassThru
|
|
$err.Exception.InnerException.ErrorRecord.FullyQualifiedErrorId | Should -BeExactly 'EmptyPipeElement'
|
|
}
|
|
|
|
}
|
|
}
|