[QUESTION] How to test output of rich.Table?

[Imipenem]

Hey, first thanks for this awesome package.

I have a small question on how to test for output of a rich Table, assume I have the following code:

table = Table(title=f'[bold]MyTitle of {myproject}', ="blue", header_style=Style(color="blue", bold=True), box=HEAVY_HEAD)

        table.add_column("Column1", justify="left", style="green", no_wrap=True)
        table.add_column("Column2", justify="left")
        table.add_column("Column3", justify="left")

        for item in mylist:
            table.add_row(f'[bold]{template[0]}', template[1], template[2], template[3], template[4])

        console = Console()
        console.print(table)

Now while testing this (with different values for myproject) using pytest I'd like to check if this table meets some requirements (so I'd like to check for example if the title is right).

How would one do this?
My naive approach was just to capture the output with pytest (basically a big string) a test whether it contains my desired title. However this does not work, as the output is something like:

MyTitle of title1                        \n┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━... PyPi.     │           │         │\n└────────────────────────────┴────────────┴──────────────┴───────────┴─────────┘\n

So TL;DR: Is there any nice way to test the output of a table? Thanks in advance ;)

[willmcgugan]

The easiest way to capture output from rich is to set the file to a StringIO. Something like this:

console = Console(file=io.StringIO(), width=120)
console.print(table)
output = console.file.getvalue()

You could also test the attributes of the Table object directly. e.g. assert table.title == "MyTitle".

[Imipenem]

I see that looks good, thanks for the quick reply.

[gmankab]

another way - https://rich.readthedocs.io/en/stable/reference/console.html#rich.console.Console.export_text

console = rich.console.Console(
    record = True
)

console.print(
    '[red]hello world!'
)

text = console.export_text()

it will be printed in console and saved in variable

[timothygebhard]

To add to @gmankab's answer: If you just want your rendered table in string without writing it to the terminal, you might want to have a look at capturing:

from rich.console import Console
console = Console()
with console.capture() as capture:
    console.print(table)
table_str = capture.get()

[gmankab]

@timothygebhard thanks

[noisy]

The easiest way to capture output from rich is to set the file to a StringIO. Something like this:

console = Console(file=io.StringIO(), width=120)
console.print(table)
output = console.file.getvalue()

You could also test the attributes of the Table object directly. e.g. assert table.title == "MyTitle".

@willmcgugan that's works. But how to print to file a table with a color info?

[willmcgugan]

https://rich.readthedocs.io/en/latest/console.html#capturing-output

[noisy]

@willmcgugan Ok. Thanks. At the end I was able to do this, so I called it a success :)