ConvertTo-Expression | Serializes an object to a PowerShell expression | Command Line Interface library
kandi X-RAY | ConvertTo-Expression Summary
kandi X-RAY | ConvertTo-Expression Summary
Serializes an object to a PowerShell expression
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QUESTION
For my hobby project ConvertTo-Expression
, I am rebuilding my test (Pester 5) script. I would like to automate the It
(and possibly the Context
part) as there are large number of syntax formats to test for and the function actually roundtrips which &([ScriptBlock]::Create("$Expression"))
. For a Minimal, Reproducible Example, I am using ConvertTo-Json
which roundtrips with ConvertTo-Json
.
My goal for this question is basically to create an easy test syntax whether the concerned function correctly roundtrips, e.g.:
Test -Compress '{"a":1}'
I would like to do something like this:
...ANSWER
Answered 2020-Nov-24 at 15:28I found a way to do it using the -TestCases
parameter:
QUESTION
For my hobby project ConvertTo-Expression
, I would like the output expression of my cmdlet (by default) compliant with the Constrained Language mode. For this, I might include a hardcoded list with Allowed Types:
ANSWER
Answered 2020-Nov-12 at 20:21How can I check (in full language mode) if a specific type is compliant with constrained language mode?
You can use something like the following, based on the Test-TypePermitted
function defined further below:
QUESTION
This question is related to:
Unquoted tokens in argument mode involving variable references and subexpressions: why are they sometimes split into multiple arguments?.
I got this Remove quotes in HashTables Keys when possible request for my ConvertTo-Expression
project.
The point is that it is not fully clear to me when keys should actually be quoted in hash tables.
As with argument values, the use of unquoted hash table keys is limited to certain characters.
Several characters (including spaces) are not allowed, e.g.:
ANSWER
Answered 2020-Jul-06 at 12:01I have been playing with AST, but that requires me to build a
ScriptBlock
first, which is considered unsafe.
This is (fortunately) not true - you can produce an AST from source code without compiling an enclosing [scriptblock]
by calling Parser.ParseInput()
:
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