Question buttons do not work in Bot Framework Emulator

Start with BotFrameworkDriver.php around lines 55 and 118, then inspect the related case in BotFrameworkDriverTest.php around line 537. Run the driver tests and reproduce a question-button response in the Bot Framework Emulator. Done means the button response is parsed without a 500 error and the test covers the format emitted by question buttons.

Setup
I'm using the Botframework Emulator with Botman Studio and the bot framework driver.

Issue

• Start a new conversation that responds with a question.
• Click on button to respond.
• Response isn't parsed with a 500 error.

There appears to be an issue where the HTML tag that is being given to the question buttons as a response is in a different format to what is expected by the driver as a response.

Conversation

You said:
Start conversation
Huh - you woke me up. What do you need?
Tell a joke
Give me a fancy quote
You said:
Tell a joke <botman value="joke" />

Requests

[14:23:16] -> message Start conversation
[14:23:16] POST 200 directline/conversations//activities
[14:23:18]<- message application/vnd.microsoft.card.hero
[14:23:18] POST 200 conversations//activities
[14:23:20]-> message Tell a joke <botman value="joke" />
[14:23:21] POST 500 directline/conversations//activities

Error

ErrorException: Undefined offset: 1 in file /Users/hfh83/Documents/Projects/StatusBot/vendor/botman/driver-botframework/src/BotFrameworkDriver.php on line 60

This is because this regex doesn't match the pattern

BotFrameworkDriver.php

55 preg_match('/<botman value="(.*)"><\/botman>/', $message->getText(), $matches);

The issue is that when the question buttons are generated as part of the convertQuestion method on line 118 of BotFrameworkDriver.php sets the HTML tag used for this to the shorthand ending in /> instead of a separate closing tag that's expected as shown above.

BotFrameworkDriver.php

118 'value' => $button['text'].'<botman value="'.$button['value'].'" />',

The test used to check this has the closing tag as part of the test so the test passes, despite this being incorrect

BotFrameworkDriverTest.php

537  $text = 'I use botman with Skype<botman value="yes"></botman>'

Solution

Change
BotFrameworkDriver.php

55 preg_match('/<botman value="(.*)"><\/botman>/', $message->getText(), $matches);

to
BotFrameworkDriver.php

55 preg_match('/<botman value="(.*)" \/>/', $message->getText(), $matches);

I'll submit a pull request with the changes needed to fix this.