Re: [go-nuts] Is there a way to specify or use the tmp directory used in testing?

2022-02-25 Thread Leam Hall 

My apologies for taking so long to respond; a new job and cold weather have 
taken up most of my time.

I have two versions of the application; one CLI and one web. The programs create 
characters for games and fiction, and use data text files relative to the binary ( 
/data/* ) to get names. The reason for not embedding names into the 
binary is so the data files can be altered to suit the user's needs. They may want 
Elven names, or Chinese, or whatever. The web program also uses template files, but 
those could probably be embedded.

The tests for the CLI work 
(https://github.com/makhidkarun/crewgen/blob/master/cmd/teamgen/main_test.go), but I have 
not figured out how to make the web version tests work 
(https://github.com/makhidkarun/crewgen/blob/master/cmd/crewgen/main_test.go). If I 
uncomment lines 38-57 of the web tests and run "go test" in that directory, I 
get:

###
Building crewgen...
Running crewgen tests...
Running in /tmp/TestHandleDocroot84710494/001, with 
/home/leam/lang/git/makhidkarun/crewgen/cmd/crewgen as dir.
open /tmp/go-build3480032656/b001/data/human_male_first.txt: no such file or 
directory
open /tmp/go-build3480032656/b001/data/human_last.txt: no such file or directory
open /tmp/go-build3480032656/b001/data/human_female_first.txt: no such file or 
directory
open /tmp/go-build3480032656/b001/data/human_last.txt: no such file or directory
2022/02/25 04:48:27 open /tmp/go-build3480032656/b001/web/layout.tmpl: no such 
file or directory
--- FAIL: TestHandleDocroot (0.00s)
--- FAIL: TestHandleDocroot/BaseCrewgenRun (0.00s)
main_test.go:53: Response code is 500
###

It seems that identifying the /tmp/go-build* directory would be useful, in that 
I could write testdata files there and do better tests. Otherwise, building in 
a specified pre-existing location so I can make sure the data files are already 
in place.

Thoughts?

Leam



On 2/23/22 09:26, David Finkel wrote:



On Wed, Feb 23, 2022 at 8:53 AM Leam Hall mailto:leamh...@gmail.com>> wrote:

My program uses data and template files located relative to the binary. 
Since go test creates the binary under test in /tmp/go-build., there are no 
data or template files. How do I either specify what directory to build in so I 
can create the files, or get the tmp directory name before the tests are run so 
I can write files to it?


When go test runs tests, they run with the current working directory inside the 
package's directory, so relative paths should work.

Another option that you might want to consider is using //go:embed directives to 
embed those files in your binary. (package doc: https://pkg.go.dev/embed 
)
This way you never need to resolve anything relative to the binary again.

Note: unless you use mlock(2) embedding in the binary shouldn't bloat memory 
usage, since the data will only be paged into memory at first-access.


Thanks!

Leam

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Re: [go-nuts] Is there a way to specify or use the tmp directory used in testing?

2022-02-23 Thread David Finkel 
On Wed, Feb 23, 2022 at 1:47 PM Gergely Brautigam 
wrote:

> Hi!
>
> The best way to do it is, to have these files in a folder next to the test
> called `testdata` and then when the test starts, simply copy them into a
> temp location. And then make your program work with an environment property
> or setting which can configure the path in which is loads these files from
> and set that environment property for the test to the Temp folder you just
> copied your files to.
>
> And don't forget to defer os.RemoveAll(tmp) :)
>
You don't need this if you use t.TempDir
 to create the tempdir. :)

>
> On Wednesday, 23 February 2022 at 16:30:06 UTC+1 david@gmail.com
> wrote:
>
>> On Wed, Feb 23, 2022 at 8:53 AM Leam Hall  wrote:
>>
>>> My program uses data and template files located relative to the binary.
>>> Since go test creates the binary under test in /tmp/go-build., there
>>> are no data or template files. How do I either specify what directory to
>>> build in so I can create the files, or get the tmp directory name before
>>> the tests are run so I can write files to it?
>>>
>>
>> When go test runs tests, they run with the current working directory
>> inside the package's directory, so relative paths should work.
>>
>> Another option that you might want to consider is using //go:embed
>> directives to embed those files in your binary. (package doc:
>> https://pkg.go.dev/embed)
>> This way you never need to resolve anything relative to the binary again.
>>
>> Note: unless you use mlock(2) embedding in the binary shouldn't bloat
>> memory usage, since the data will only be paged into memory at first-access.
>>
>>>
>>> Thanks!
>>>
>>> Leam
>>>
>>> --
>>> Site Automation Engineer   (reuel.net/resume)
>>> Scribe: The Domici War (domiciwar.net)
>>> General Ne'er-do-well  (github.com/LeamHall)
>>>
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>>> Groups "golang-nuts" group.
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>>> .
>>>
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Re: [go-nuts] Is there a way to specify or use the tmp directory used in testing?

2022-02-23 Thread David Finkel 
On Wed, Feb 23, 2022 at 8:53 AM Leam Hall  wrote:

> My program uses data and template files located relative to the binary.
> Since go test creates the binary under test in /tmp/go-build., there
> are no data or template files. How do I either specify what directory to
> build in so I can create the files, or get the tmp directory name before
> the tests are run so I can write files to it?
>

When go test runs tests, they run with the current working directory inside
the package's directory, so relative paths should work.

Another option that you might want to consider is using //go:embed
directives to embed those files in your binary. (package doc:
https://pkg.go.dev/embed)
This way you never need to resolve anything relative to the binary again.

Note: unless you use mlock(2) embedding in the binary shouldn't bloat
memory usage, since the data will only be paged into memory at first-access.

>
> Thanks!
>
> Leam
>
> --
> Site Automation Engineer   (reuel.net/resume)
> Scribe: The Domici War (domiciwar.net)
> General Ne'er-do-well  (github.com/LeamHall)
>
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Re: [go-nuts] Is there a way to specify or use the tmp directory used in testing?

2022-02-23 Thread Amnon 
Use t.TestDir()
https://pkg.go.dev/testing#T.TempDir
On Wednesday, 23 February 2022 at 14:37:54 UTC mlevi...@gmail.com wrote:

> Use absolute paths? Feels like you're trying to bend something very hard 
> here
>
> On Wed, Feb 23, 2022 at 2:54 PM Leam Hall  wrote:
>
>> My program uses data and template files located relative to the binary. 
>> Since go test creates the binary under test in /tmp/go-build., there 
>> are no data or template files. How do I either specify what directory to 
>> build in so I can create the files, or get the tmp directory name before 
>> the tests are run so I can write files to it?
>>
>> Thanks!
>>
>> Leam
>>
>> -- 
>> Site Automation Engineer   (reuel.net/resume)
>> Scribe: The Domici War (domiciwar.net)
>> General Ne'er-do-well  (github.com/LeamHall)
>>
>> -- 
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>> "golang-nuts" group.
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>> https://groups.google.com/d/msgid/golang-nuts/7d8cf3dc-14ab-315f-ce5a-9e3cca877e17%40gmail.com
>> .
>>
>

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Re: [go-nuts] Is there a way to specify or use the tmp directory used in testing?

2022-02-23 Thread Levieux Michel 
Use absolute paths? Feels like you're trying to bend something very hard
here

On Wed, Feb 23, 2022 at 2:54 PM Leam Hall  wrote:

> My program uses data and template files located relative to the binary.
> Since go test creates the binary under test in /tmp/go-build., there
> are no data or template files. How do I either specify what directory to
> build in so I can create the files, or get the tmp directory name before
> the tests are run so I can write files to it?
>
> Thanks!
>
> Leam
>
> --
> Site Automation Engineer   (reuel.net/resume)
> Scribe: The Domici War (domiciwar.net)
> General Ne'er-do-well  (github.com/LeamHall)
>
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> .
>

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[go-nuts] Is there a way to specify or use the tmp directory used in testing?

2022-02-23 Thread Leam Hall 

My program uses data and template files located relative to the binary. Since 
go test creates the binary under test in /tmp/go-build., there are no data 
or template files. How do I either specify what directory to build in so I can 
create the files, or get the tmp directory name before the tests are run so I 
can write files to it?

Thanks!

Leam

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