# I have some python functions that i wish to rewrite but wish to retain their results. can you give me...

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## User

i have some python functions that i wish to rewrite but wish to retain their results. can you give me the bdd behave tests that i could use:

```python
def make_results_tree(name, page):
    """ Returns a tree - takes a name to search for and a page number and returns an etree suitable for apply_xpath() """
    url = "http://solicitors.lawsociety.org.uk/search/results?Name=%s&Type=0&IncludeNlsp=false&Pro=True&Page=%s" % (name, page)
    with open(lawsoc_results_fo, 'r') as fo:
        if not any(url == x.rstrip('\r\n') for x in fo):
            print("New Lawsoc results page URL, writing to file." + " - " + url)
            write_file(lawsoc_results_fo, url)
        else:
            print("Lawsoc results page URL already saved.")

    text = fetch_url(url)
    # print(text)
    tree = parse(StringIO(text))
    return tree


def make_office_url(classification, idnumber, options):
    """ Returns a URL - takes a office/person, id options after a ? and returns a url. """
    url = "http://solicitors.lawsociety.org.uk/%s/%s/%s" % (classification, idnumber, options)
    # print("make_office_url: url: " + url)
    return url


def make_office_tree(classification, idnumber, options):
    """ Returns a tree - takes a office/person, id options after a ? and returns an etree suitable for apply_xpath(). """
    url = "http://solicitors.lawsociety.org.uk/%s/%s/%s" % (classification, idnumber, options)
    # print("make_office_tree: url: " + url)
    text = fetch_url(url)
    tree = parse(StringIO(text))
    return tree


def make_simple_tree(url):
    """ Returns a tree - Fetches the content from the given URL
    takes a url and returns a tree suitable for apply_xpath()"""
    text = fetch_url(url)
    # print(text)
    tree = parse(StringIO(text))
    return _tree
```

## Phind-34B answer

To rewrite your Python functions while retaining their results, you can use Behavior-Driven Development (BDD) tests with the `behave` framework. This approach allows you to define the expected behavior of your functions in a human-readable format, which can then be used to automatically test your code. Here's how you can write BDD tests for the functions you've provided.

First, ensure you have `behave` installed in your environment. If not, you can install it using pip:

```bash
pip install behave
```

Next, create a directory structure for your BDD tests. A typical structure looks like this:

```markdown
my_project/
│
├── features/
│ ├── **init**.py
│ ├── environment.py
│ ├── steps/
│ │ ├── **init**.py
│ │ └── my_steps.py
│ └── my_feature.feature
│
└── my_project/
├── **init**.py
├── my_module.py
└── my_tests.py
```

In `my_feature.feature`, you'll define the scenarios for your tests. Here's an example for your functions:

```gherkin
Feature: Solicitor Search and Office URL Generation

Scenario: Generate results tree for a solicitor
    Given a solicitor's name "John Doe" and page number "1"
    When I generate the results tree
    Then the results tree should be a valid etree

Scenario: Generate office URL for a solicitor
    Given a classification "solicitor", an ID number "12345", and options "?option=value"
    When I generate the office URL
    Then the office URL should be "http://solicitors.lawsociety.org.uk/solicitor/12345/?option=value"

Scenario: Generate office tree for a solicitor
    Given a classification "solicitor", an ID number "12345", and options "?option=value"
    When I generate the office tree
    Then the office tree should be a valid etree

Scenario: Generate simple tree from a URL
    Given a URL "http://example.com"
    When I generate the simple tree
    Then the simple tree should be a valid etree
```

In `my_steps.py`, you'll implement the steps defined in your feature file. Here's a skeleton for your steps:

```python
from behave import given, when, then
from my_project.my_module import make_results_tree, make_office_url, make_office_tree, make_simple_tree
from lxml import etree

@given('a solicitor\'s name "{name}" and page number "{page}"')
def step_given_solicitor_name_and_page(context, name, page):
    context.name = name
    context.page = page

@when('I generate the results tree')
def step_when_generate_results_tree(context):
    context.tree = make_results_tree(context.name, context.page)

@then('the results tree should be a valid etree')
def step_then_results_tree_valid(context):
    assert isinstance(context.tree, etree._ElementTree)

# Implement similar steps for the other scenarios
```

You'll need to adjust the steps to match the actual implementation of your functions, especially for the `fetch_url` and `parse` functions, which are not provided in your question. You might need to mock these functions or provide stub implementations for testing purposes.

Finally, run your tests with the `behave` command:

```bash
behave
```

This setup allows you to rewrite your functions while ensuring that their behavior remains consistent with the expected outcomes defined in your BDD tests.

---

**Sources:**

- [(1) Few tips : API Testing using Python and BDD approach ...](https://medium.com/@mr_possible/few-tips-api-testing-using-python-and-bdd-approach-using-behave-32f3f462f353)
- [(2) Part 6: Tags in Selenium Python | Behave(BDD)](https://www.youtube.com/watch?v=A8Tn14hJiWI)
- [(3) Run Selenium tests with Python and Behave BDD](https://testingbot.com/support/getting-started/behave.html)
- [(4) BDD tests with Behave](https://pythonbiellagroup.it/en/learning/testing_python/tutorial/behave/)
- [(5) Getting Started with Behavior Testing in Python with Behave](https://semaphoreci.com/community/tutorials/getting-started-with-behavior-testing-in-python-with-behave)

## User

adjust the steps to match the actual implementation of these functions, fetch_url and parse functions from lxml.html and urllib.parse import urlparse ...

## Phind-34B answer

To adjust the steps for your BDD tests in the context of `behave` to match the actual implementation of the `fetch_url` and `parse` functions from `lxml.html` and `urllib.parse`, you'll need to mock these functions or provide stub implementations for testing purposes. This is because making actual HTTP requests during tests can be slow, unreliable, and not necessary for verifying the logic of your functions.

First, let's mock the `fetch_url` function. Since `fetch_url` uses `requests_tor.get(url)` to fetch the content, you can use the `unittest.mock` library to mock this call. Here's how you can adjust the steps in `my_steps.py` to mock `fetch_url`:

```python
from behave import given, when, then
from unittest.mock import patch
from my_project.my_module import make_results_tree, make_office_url, make_office_tree, make_simple_tree
from lxml import etree

@given('a solicitor\'s name "{name}" and page number "{page}"')
def step_given_solicitor_name_and_page(context, name, page):
    context.name = name
    context.page = page

@when('I generate the results tree')
@patch('my_project.my_module.fetch_url')
def step_when_generate_results_tree(context, mock_fetch_url):
    # Mock the fetch_url function to return a dummy response
    mock_fetch_url.return_value = "<html><body>Dummy content</body></html>"
    context.tree = make_results_tree(context.name, context.page)

@then('the results tree should be a valid etree')
def step_then_results_tree_valid(context):
    assert isinstance(context.tree, etree._ElementTree)

# Implement similar steps for the other scenarios
```

For the `parse` function from `lxml.html`, you can directly use it in your tests without needing to mock it, as it's a straightforward function that doesn't involve external calls. However, if you want to ensure that your tests are not dependent on external resources, you can mock the `lxml.html.parse` function as well, similar to how `fetch_url` was mocked.

Remember, the goal of mocking is to isolate the function you're testing from external dependencies, allowing you to focus on the logic of your function. This approach makes your tests faster, more reliable, and easier to maintain.

---

**Sources:**

- [(1) parsing HTML from HTTPS url using lxml - urllib2.urlopen ...](https://stackoverflow.com/questions/34906922/python-parsing-html-from-https-url-using-lxml-urllib2-urlopen-workaround-wil)
- [(2) Parsing XML and HTML with lxml](https://lxml.de/parsing.html)
- [(3) urllib.parse — Parse URLs into components — Python 3.12.2 ...](https://docs.python.org/3/library/urllib.parse.html)
- [(4) Parsing HTML](https://lxml.de/lxmlhtml.html)
- [(5) HOWTO Fetch Internet Resources Using The urllib Package ...](https://docs.python.org/3/howto/urllib2.html)
