testflows.texts 2.0.211209.1173148

TestFlows - Texts

TestFlows-Texts

TestFlows.com Open-Source Software Testing Framework Texts

Use testflows.texts Python module to help you write auto verified software documentation by combining your text with the verification procedure of the described functionality in the same source file while leveraging the power and flexibility of TestFlows.com Open-Source Test Framework.

Source files for auto verified documentation by convention have .tfd extension and are written using Markdown. Therefore, all .tfd files are valid Markdown files. However, .tfd files are only the source files for your documentation that must be executed using tfs document run command to produce final Markdown documentation files.

$ tfs document run --input my_document.tfd --output my_document.md

Requirements

• Python3 >= 3.8

Install

You can install testflows.texts using pip3 command:

pip3 install --upgrade testflows.texts

After installing testflows.texts you will also have tfs command available in your environment.

Writing Auto Verified Docs

Follow the example Markdown document to get to know how you can write auto verified docs yourself.

    ## This is a heading

    This file is written using Markdown where you can have any number
    of `python:testflows` code blocks that contain executable Python code.
    
    ```python:testflows
    # This is Python code that will be executed when .tfd document is run.
    
    msg = "Hello TestFlows Texts"
    ```
 
    The scope is shared between all the code blocks in the same document.
    
    ```python:testflows
    # so `msg` variable define above can also be accessed in this
    # `python:testflows` code block

    new_msg = msg + " Thanks for making verifying docs so easy!"
    ```
    
    The output of executing `.tfd` document using `tfs document run`
    is the final `.md` file with all the `python:testflows` code blocks
    removed and replaced with the text added to the document using
    the `text()` function.

    ```python:testflows
    # Let's use `text()` function to add some text to our document
    # dynamically in our Python code
 
    text("add this line to the final Markdown document")
    ```
    
    Any text outside the `python:testflows` code blocks are treated as Python
    f-strings. This allows you to specify expressions for substitutions.
    See [Python formatted string literals](https://docs.python.org/3/tutorial/inputoutput.html#formatted-string-literals)
    for more details.
    
    Here is an example where we will substitute the value of `msg` variable next {msg}.
    But with Python f-strings you can specify even complex expressions. For example, we can 
    convert our string in `msg` to title case as follows {msg.title()}.
    
    You can double your curly braces to escape them when substitution expression is not needed
    using `{{` or `}}`.
    
    By the way, your document can't contain any triple double quotes `"""`. If you need them then you have to
    add them inside the `python:testflows` code block using `text()` function. For example,
    
    ```python:testflows
    text('"""')
    ```
    
    Well, this is pretty much it. With `testflows.texts` you have full power of full featured
    test framework and Python language at your disposal to make sure your documentation always
    stays to date.

Using tfs document run

$ tfs document run -h
usage: tfs document run [-h] [-i path [path ...]] [-o [path]] [-f]

  ---- o o o ----
 |   o       o   |
 | 1 o 10010 o 0 |
 |   o       o   |    TestFlows.com Open-Source Software Testing Framework v1.7.211208.1222904
  ---  o o oxx --
 /           xx   \
/  ^^^        xx   \
 ------------------

Run executable document.

Executable documents are Markdown documents that
contain `python:testflows` code blocks which may contain
any Python code that will be run during document execution.  

All text within executable document except for the
`python:testflows` code blocks are treated as Python f-strings.
Therefore, you must escape any `{`, `}` characters by doubling
them, for example: `{{` or `}}`, otherwise they will be treated
as f-string expressions.

Text must not contain triple quotes `"""`. If you need them
then you must use `text()` function within `python:testflows` code block
to explicitly add them to the the text. 

For example:
    ```python:testflows
    text('adding triple quotes """ to text')
    ``` 

Specify '--' at the end of the command line options to pass
options to the executable document writer program itself.

For example:
   tfs document run -i <path>--o <path> -- --help

You must set PYTHONPATH when modules needed by the executable
document are not in the default path.

For example:
   PYTHONPATH=<path/to/module> tfs document run -i <path> -o <path>

The `--input` can take multiple files and in such case if `--output`
is specified it is treated as directory name.

For example,
   tfs document run -i `find $(pwd) -name "*.tfd"` -o . -f 
or
   tfs document run -i `find $(pwd) -name "*.tfd"` -o /path/to/output/dir -f 

If input is '-' (stdin) and output is '.' then output file is 'document.md'
which is created in the current working directory.

optional arguments:
  -h, --help                                   show this help message and exit
  -i path [path ...], --input path [path ...]  input file, use '-' for stdin, default: stdin
  -o [path], --output [path]                   output file or directory if multiple input files are
                                               passed, default: '.' or if input is stdin then '-'.
                                               The '.' means to create output file in the same
                                               directory as the input file having .md extension and
                                               the '-' means output to stdout.
  -f, --force                                  force to override existing output file if it already
                                               exists

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