DX-2907 Send DTMF

Author: brianluisgomez

bandwidth/model/bxml/verbs/__init__.py

@@ -2,6 +2,7 @@
 from .pause_recording import PauseRecording
 from .phone_number import PhoneNumber
 from .record import Record
+from .send_dtmf import SendDtmf
 from .sip_uri import SipUri
 from .tag import Tag
 from .transfer import Transfer

bandwidth/model/bxml/verbs/send_dtmf.py

@@ -0,0 +1,38 @@
+"""
+send_dtmf.py
+
+Bandwidth's SendDtmf BXML verb
+
+@copyright Bandwidth INC
+"""
+from ..terminal_verb import TerminalVerb
+
+
+class SendDtmf(TerminalVerb):
+
+    def __init__(
+        self, digits: str,
+        tone_duration: str=None, 
+        tone_interval: str=None,
+    ):
+        """Initialize a <SendDtmf> verb
+
+        Args:
+            digits (str): String containing the DTMF characters to be sent in a call. Allows a maximum of 50 characters. The digits will be sent one-by-one with a marginal delay.
+            tone_duration (str, optional): The length (in milliseconds) of each DTMF tone. Default value is 200. Range: decimal values between 50 - 5000.
+            tone_interval (str, optional): The duration of silence (in milliseconds) following each DTMF tone. Default value is 400. Range: decimal values between 50 - 5000.
+        """
+        self.digits = digits
+        self.tone_duration = tone_duration
+        self.tone_interval = tone_interval
+        super().__init__(
+            tag="SendDtmf",
+            content=self.digits
+        )
+
+    @property
+    def _attributes(self):
+        return {
+            "toneDuration": self.tone_duration,
+            "toneInterval": self.tone_interval
+        }

test/unit/bxml/test_send_dtmf.py

@@ -0,0 +1,33 @@
+"""
+test_send_dtmf.py
+
+Unit tests for the <SendDtmf> BXML verb
+
+@copyright Bandwidth Inc.
+"""
+import pytest
+import unittest
+
+from bandwidth.model.bxml.verb import Verb
+from bandwidth.model.bxml.verbs.send_dtmf import SendDtmf
+
+
+class TestSendDtmf(unittest.TestCase):
+
+    def setUp(self):
+        self.send_dtmf = SendDtmf(
+            digits="1234",
+            tone_duration="3",
+            tone_interval="5"
+        )
+        self.test_verb = Verb(tag="test")
+
+    def test_to_bxml(self):
+        expected = '<SendDtmf toneDuration="3" toneInterval="5">1234</SendDtmf>'
+        assert(expected == self.send_dtmf.to_bxml())
+
+
+    def test_add_verb(self):
+        with pytest.raises(AttributeError):
+            self.send_dtmf.add_verb(self.test_verb)
+