Introduction

🪄 Dive into the world of SMS Sending Apps and see how seamlessly Keploy can be integrated with FastAPI and Twilio. Buckle up, it's gonna be a fun ride! 🎢

🛠️ Platform-Specific Requirements for Keploy

Below is a table summarizing the tools needed for both native and Docker installations of Keploy on MacOS, Windows, and Linux:

Operating System	Without Docker	Docker Installation	Prerequisites
MacOS			- Docker Desktop version must be 4.25.2 or above - For running Keploy on MacOS natively, refer to Guide
Windows			- Use WSL `wsl --install` - Windows 10 version 2004 and higher (Build 19041 and higher) or Windows 11
Linux			Linux kernel 5.15 or higher

On MacOS and Windows, additional tools are required for Keploy due to the lack of native eBPF support.

Keploy Installation

Quick Installation Using CLI

Let's get started by setting up the Keploy alias with this command:

 curl --silent -O -L https://keploy.io/install.sh && source install.sh

You should see something like this:

       ▓██▓▄
    ▓▓▓▓██▓█▓▄
     ████████▓▒
          ▀▓▓███▄      ▄▄   ▄               ▌
         ▄▌▌▓▓████▄    ██ ▓█▀  ▄▌▀▄  ▓▓▌▄   ▓█  ▄▌▓▓▌▄ ▌▌   ▓
       ▓█████████▌▓▓   ██▓█▄  ▓█▄▓▓ ▐█▌  ██ ▓█  █▌  ██  █▌ █▓
      ▓▓▓▓▀▀▀▀▓▓▓▓▓▓▌  ██  █▓  ▓▌▄▄ ▐█▓▄▓█▀ █▓█ ▀█▄▄█▀   █▓█
       ▓▌                           ▐█▌                   █▌
        ▓

Keploy CLI

Available Commands:
  example           Example to record and test via keploy
  config --generate generate the keploy configuration file
  record            record the keploy testcases from the API calls
  test              run the recorded testcases and execute assertions
  update            Update Keploy

Flags:
      --debug     Run in debug mode
  -h, --help      help for keploy
  -v, --version   version for keploy

Use "keploy [command] --help" for more information about a command.

🎉 Wohoo! You are all set to use Keploy.

Other Installation Methods

Install using Docker

Downloading and running Keploy in Docker

On macOS

Note : Keploy is not supported natively on MacOS, so you can follow the below method to run with docker

Open up a terminal window.
Create a bridge network in Docker using the following docker network create command:

docker network create keploy-network

Run the following command to start the Keploy container:

alias keploy="docker run --name keploy-v2 -p 16789:16789 --network keploy-network --privileged --pid=host -v $(pwd):$(pwd) -w $(pwd) -v /sys/fs/cgroup:/sys/fs/cgroup -v /sys/kernel/debug:/sys/kernel/debug -v /sys/fs/bpf:/sys/fs/bpf -v /var/run/docker.sock:/var/run/docker.sock --rm ghcr.io/keploy/keploy"

Downloading and running Keploy in Native

Prequisites:

Linux Kernel version 5.15 or higher
Run uname -a to verify the system architecture.
In case of Windows, use WSL with Ubuntu 20.04 LTS or higher.

Downloading and running Keploy On WSL/Linux AMD

On WSL/Linux AMD

Open the terminal Session.
Run the following command to download and install Keploy:

curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_linux_amd64.tar.gz" | tar xz --overwrite -C /tmp
sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin/keploy

On WSL/Linux ARM

Open the terminal Session
Run the following command to download and install Keploy:

curl --silent --location "https://github.com/keploy/keploy/releases/latest/download/keploy_linux_arm64.tar.gz" | tar xz --overwrite -C /tmp
sudo mkdir -p /usr/local/bin && sudo mv /tmp/keploy /usr/local/bin/keploy

Note: Keploy is not supported on MacOS natively.

Setting up the Docker Desktop for WSL 2

Install Docker Desktop for Windows from here.

When developing on Windows with Docker Desktop and WSL 2, it's crucial to configure Docker Desktop to allow WSL 2 distributions to access the Docker daemon. This setup enables seamless integration between your Windows environment, WSL 2 Linux distros, and Docker.

By default, Docker Desktop may not be configured to work with all WSL 2 distros out of the box. Proper configuration ensures that you can run Docker commands from within your WSL 2 environment, allowing for a more native Linux development experience while leveraging the power of Windows.

This setup is essential for Keploy to function correctly in a WSL 2 environment, as it needs to interact with the Docker daemon to manage containers and networks effectively. For detailed instructions on how to configure Docker Desktop for WSL 2, please refer to the official Docker documentation.

Get Started! 🎬

Setup the Twilio Account 💬

You can get your Twilio credentials by signing in to Twilio Console. Once you get the Twilio Account SID, Auth Token, and Phone Number, modify the .env file with your credentials.

Clone the Sample App 🧪

git clone https://github.com/keploy/samples-python.git && cd samples-python/fastapi-twilio

Installation Keploy

Depending on your OS, choose your adventure:

There are 2 ways you can run this sample application.

Using Docker : running application
Running application locally

Using Docker Compose 🐳

We will be using Docker compose to run the application as well as Mongo on Docker container.

Lights, Camera, Record! 🎥

Create the docker image of the app:

docker build -t fastapi-twilio:1.0 .

Capture the test-cases-

keploy record -c "docker run -p 8000:8000 --name fastapi-twilio fastapi-twilio:1.0"

🔥Make some API calls. Postman, Hoppscotch or even curl - take your pick!

Let's make URLs short and sweet:

Generate testcases

To generate testcases we just need to make some API calls.

Make the POST requests

Replace the place holder below i.e. YOUR_REGISTERED_PERSONAL_PHONE_NUMBER with your registered personal phone number that you linked with Twilio.

curl --location 'http://127.0.0.1:8000/send-sms/' \
--header 'Content-Type: application/json' \
--data '{
    "Body": "Test, testtt, testttttttssss :)",
    "To": "YOUR_REGISTERED_PERSONAL_PHONE_NUMBER",
}'

Replace the place holder below i.e. SOME_WRONG_PHONE_NUMBER with any wrong phone number and make the request.

curl --location 'http://127.0.0.1:8000/send-sms/' \
--header 'Content-Type: application/json' \
--data '{
    "Body": "Test, testtt, testttttttssss :)",
    "To": "SOME_WRONG_PHONE_NUMBER",
}'

Give yourself a pat on the back! With that simple spell, you've conjured up a test case with a mock! Explore the Keploy directory and you'll discover your handiwork in test-1.yml and mocks.yml.

version: api.keploy.io/v1beta1
kind: Http
name: test-1
spec:
  metadata: {}
  req:
    method: POST
    proto_major: 1
    proto_minor: 1
    url: http://127.0.0.1:8000/send-sms/
    header:
      Accept: "*/*"
      Accept-Encoding: gzip, deflate, br
      Connection: keep-alive
      Content-Length: "75"
      Content-Type: application/json
      Host: 127.0.0.1:8000
      Postman-Token: c871b715-7aae-46b6-8e0d-1341aa426624
      User-Agent: PostmanRuntime/7.34.0
    body: |-
      {
          "Body": "Test, testtt, testttttttssss :)",
          "To": "+91700004379"
      }
    body_type: ""
    timestamp: 2023-11-14T14:56:25.800517709+05:30
  resp:
    status_code: 200
    header:
      Content-Length: "73"
      Content-Type: application/json
      Date: Tue, 14 Nov 2023 09:26:25 GMT
      Server: uvicorn
    body: '{"message":"Failed to send SMS. Please check the provided phone number."}'
    body_type: ""
    status_message: ""
    proto_major: 0
    proto_minor: 0
    timestamp: 2023-11-14T14:56:32.013566624+05:30
  objects: []
  assertions:
    noise:
      header.Date: []
  created: 1699953992
curl: |-
  curl --request POST \
  --url http://127.0.0.1:8000/send-sms/ \
  --header 'User-Agent: PostmanRuntime/7.34.0' \
  --header 'Accept: */*' \
  --header 'Postman-Token: c871b715-7aae-46b6-8e0d-1341aa426624' \
  --header 'Host: 127.0.0.1:8000' \
  --header 'Accept-Encoding: gzip, deflate, br' \
  --header 'Connection: keep-alive' \
  --header 'Content-Type: application/json' \
  --data '{
      "Body": "Test, testtt, testttttttssss :)",
      "To": "+91700004379"
  }'

This is how mocks.yml generated would look like:-

version: api.keploy.io/v1beta1
kind: Http
name: mocks
spec:
  metadata:
    name: Http
    operation: POST
    type: HTTP_CLIENT
  req:
    method: POST
    proto_major: 1
    proto_minor: 1
    url: /2010-04-01/Accounts/AC19413687d9ce28c80cda944730f8b286/Messages.json
    header:
      Accept: "*/*"
      Accept-Encoding: gzip, deflate
      Authorization: Basic QUMxOTQxMzY4N2Q5Y2UyOGM4MGNkYTk0NDczMGY4YjI4NjpjMTc0MDc5YzU2NTA0N2FmYWJmNDk5MWI2ZGQ1MmFiYg==
      Connection: keep-alive
      Content-Length: "81"
      Content-Type: application/x-www-form-urlencoded
      User-Agent: python-requests/2.31.0
    body: Body=Test%2C+testtt%2C+testttttttssss+%3A%29&From=%2B16413324066&To=%2B9170000437
    body_type: ""
    timestamp: 0001-01-01T00:00:00Z
  resp:
    status_code: 400
    header:
      Access-Control-Allow-Credentials: "true"
      Access-Control-Allow-Headers: Accept, Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, Idempotency-Key
      Access-Control-Allow-Methods: GET, POST, DELETE, OPTIONS
      Access-Control-Allow-Origin: "*"
      Access-Control-Expose-Headers: ETag
      Connection: keep-alive
      Content-Length: 335,335
      Content-Type: application/json
      Date: Tue, 14 Nov 2023 09:27:21 GMT
      Twilio-Concurrent-Requests: "1"
      Twilio-Request-Duration: "0.080"
      Twilio-Request-Id: RQb54d7f05d29e83bc89889cc136bcd99d
      X-Api-Domain: api.twilio.com
      X-Home-Region: us1
      X-Powered-By: AT-5000
      X-Shenanigans: none
    body: '{"code": 21608, "message": "The number +917000XXXX is unverified. Trial accounts cannot send messages to unverified numbers; verify +917000XXXX at twilio.com/user/account/phone-numbers/verified, or purchase a Twilio number to send messages to unverified numbers", "more_info": "https://www.twilio.com/docs/errors/21608", "status": 400}'
    body_type: ""
    status_message: ""
    proto_major: 0
    proto_minor: 0
    timestamp: 0001-01-01T00:00:00Z
  objects: []
  created: 1699954041
  reqTimestampMock: 2023-11-14T14:57:20.914415283+05:30
  resTimestampMock: 2023-11-14T14:57:21.298027703+05:30

Want to see if everything works as expected?

Run Tests

Time to put things to the test 🧪

keploy test -c "docker run -p 8000:8000 --name fastapi-twilio fastapi-twilio:1.0" --delay 10

The --delay flag? Oh, that's just giving your app a little breather (in seconds) before the test cases come knocking.

Final thoughts? Dive deeper! Try different API calls, tweak the Twilio response in the mocks.yml, or fiddle with the request or response in test-x.yml. Run the tests again and see the magic unfold!✨👩‍💻👨‍💻✨

Wrapping it up 🎉

Congrats on the journey so far! You've seen Keploy's power, flexed your coding muscles, and had a bit of fun too! Now, go out there and keep exploring, innovating, and creating! Remember, with the right tools and a sprinkle of fun, anything's possible.😊🚀

Happy coding! ✨👩‍💻👨‍💻✨

**********************************___**********************************

Running App Locally on Linux/WSL 🐧

We'll be running our sample application right on Linux. Ready? Let's get the party started!🎉

📼 Roll the Tape - Recording Time!

Install Python's virtual environment library:

pip3 install virtualenv

Create a virtual environment and activate it:

python3 -m virtualenv venv && source venv/bin/activate

Install the dependencies using the requirements.txt file:

pip3 install -r requirements.txt

Ready, set, record! Here's how:

keploy record -c "uvicorn application.main:app --reload"

Keep an eye out for the -c flag! It's the command charm to run the app.

Alright, magician! With the app alive and kicking, let's weave some test cases. The spell? Making some API calls! Postman, Hoppscotch, or the classic curl - pick your wand.

Generate testcases

To generate testcases we just need to make some API calls.

Make the POST requests

Replace the place holder below i.e. YOUR_REGISTERED_PERSONAL_PHONE_NUMBER with your registered personal phone number that you linked with Twilio.

curl --location 'http://127.0.0.1:8000/send-sms/' \
--header 'Content-Type: application/json' \
--data '{
    "Body": "Test, testtt, testttttttssss :)",
    "To": "YOUR_REGISTERED_PERSONAL_PHONE_NUMBER",
}'

Replace the place holder below i.e. SOME_WRONG_PHONE_NUMBER with any wrong phone number and make the request.

curl --location 'http://127.0.0.1:8000/send-sms/' \
--header 'Content-Type: application/json' \
--data '{
    "Body": "Test, testtt, testttttttssss :)",
    "To": "SOME_WRONG_PHONE_NUMBER",
}'

version: api.keploy.io/v1beta1
kind: Http
name: test-1
spec:
  metadata: {}
  req:
    method: POST
    proto_major: 1
    proto_minor: 1
    url: http://127.0.0.1:8000/send-sms/
    header:
      Accept: "*/*"
      Accept-Encoding: gzip, deflate, br
      Connection: keep-alive
      Content-Length: "75"
      Content-Type: application/json
      Host: 127.0.0.1:8000
      Postman-Token: c871b715-7aae-46b6-8e0d-1341aa426624
      User-Agent: PostmanRuntime/7.34.0
    body: |-
      {
          "Body": "Test, testtt, testttttttssss :)",
          "To": "+91700004379"
      }
    body_type: ""
    timestamp: 2023-11-14T14:56:25.800517709+05:30
  resp:
    status_code: 200
    header:
      Content-Length: "73"
      Content-Type: application/json
      Date: Tue, 14 Nov 2023 09:26:25 GMT
      Server: uvicorn
    body: '{"message":"Failed to send SMS. Please check the provided phone number."}'
    body_type: ""
    status_message: ""
    proto_major: 0
    proto_minor: 0
    timestamp: 2023-11-14T14:56:32.013566624+05:30
  objects: []
  assertions:
    noise:
      header.Date: []
  created: 1699953992
curl: |-
  curl --request POST \
  --url http://127.0.0.1:8000/send-sms/ \
  --header 'User-Agent: PostmanRuntime/7.34.0' \
  --header 'Accept: */*' \
  --header 'Postman-Token: c871b715-7aae-46b6-8e0d-1341aa426624' \
  --header 'Host: 127.0.0.1:8000' \
  --header 'Accept-Encoding: gzip, deflate, br' \
  --header 'Connection: keep-alive' \
  --header 'Content-Type: application/json' \
  --data '{
      "Body": "Test, testtt, testttttttssss :)",
      "To": "+91700004379"
  }'

This is how mocks.yml generated would look like:-

version: api.keploy.io/v1beta1
kind: Http
name: mocks
spec:
  metadata:
    name: Http
    operation: POST
    type: HTTP_CLIENT
  req:
    method: POST
    proto_major: 1
    proto_minor: 1
    url: /2010-04-01/Accounts/AC19413687d9ce28c80cda944730f8b286/Messages.json
    header:
      Accept: "*/*"
      Accept-Encoding: gzip, deflate
      Authorization: Basic QUMxOTQxMzY4N2Q5Y2UyOGM4MGNkYTk0NDczMGY4YjI4NjpjMTc0MDc5YzU2NTA0N2FmYWJmNDk5MWI2ZGQ1MmFiYg==
      Connection: keep-alive
      Content-Length: "81"
      Content-Type: application/x-www-form-urlencoded
      User-Agent: python-requests/2.31.0
    body: Body=Test%2C+testtt%2C+testttttttssss+%3A%29&From=%2B16413324066&To=%2B9170000437
    body_type: ""
    timestamp: 0001-01-01T00:00:00Z
  resp:
    status_code: 400
    header:
      Access-Control-Allow-Credentials: "true"
      Access-Control-Allow-Headers: Accept, Authorization, Content-Type, If-Match, If-Modified-Since, If-None-Match, If-Unmodified-Since, Idempotency-Key
      Access-Control-Allow-Methods: GET, POST, DELETE, OPTIONS
      Access-Control-Allow-Origin: "*"
      Access-Control-Expose-Headers: ETag
      Connection: keep-alive
      Content-Length: 335,335
      Content-Type: application/json
      Date: Tue, 14 Nov 2023 09:27:21 GMT
      Twilio-Concurrent-Requests: "1"
      Twilio-Request-Duration: "0.080"
      Twilio-Request-Id: RQb54d7f05d29e83bc89889cc136bcd99d
      X-Api-Domain: api.twilio.com
      X-Home-Region: us1
      X-Powered-By: AT-5000
      X-Shenanigans: none
    body: '{"code": 21608, "message": "The number +917000XXXX is unverified. Trial accounts cannot send messages to unverified numbers; verify +917000XXXX at twilio.com/user/account/phone-numbers/verified, or purchase a Twilio number to send messages to unverified numbers", "more_info": "https://www.twilio.com/docs/errors/21608", "status": 400}'
    body_type: ""
    status_message: ""
    proto_major: 0
    proto_minor: 0
    timestamp: 0001-01-01T00:00:00Z
  objects: []
  created: 1699954041
  reqTimestampMock: 2023-11-14T14:57:20.914415283+05:30
  resTimestampMock: 2023-11-14T14:57:21.298027703+05:30

Want to see if everything works as expected?

Run Tests

Time to put things to the test 🧪

keploy test -c "uvicorn application.main:app --reload" --delay 10

The --delay flag? Oh, that's just giving your app a little breather (in seconds) before the test cases come knocking.

Wrapping it up 🎉

Hope this helps you out, if you still have any questions, reach out to us .

Contact Us

If you have any questions or need help, please feel free to reach out to us at hello@keploy.io or reach out us on or open a discussion on

🛠️ Platform-Specific Requirements for Keploy​

Quick Installation Using CLI​

Other Installation Methods​

Downloading and running Keploy in Docker​

On macOS​

Downloading and running Keploy in Native​

On WSL/Linux AMD​

On WSL/Linux ARM​

Setting up the Docker Desktop for WSL 2​

Get Started! 🎬​

Setup the Twilio Account 💬​

Clone the Sample App 🧪​

Installation Keploy​

Using Docker Compose 🐳​

Lights, Camera, Record! 🎥​

Generate testcases​

Run Tests​

Wrapping it up 🎉​

Running App Locally on Linux/WSL 🐧​

📼 Roll the Tape - Recording Time!​

Generate testcases​

Run Tests​

Wrapping it up 🎉​

Contact Us​

🛠️ Platform-Specific Requirements for Keploy

Quick Installation Using CLI

Other Installation Methods

Downloading and running Keploy in Docker

On macOS

Downloading and running Keploy in Native

On WSL/Linux AMD

On WSL/Linux ARM

Setting up the Docker Desktop for WSL 2

Get Started! 🎬

Setup the Twilio Account 💬

Clone the Sample App 🧪

Installation Keploy

Using Docker Compose 🐳

Lights, Camera, Record! 🎥

Generate testcases

Run Tests

Wrapping it up 🎉

Running App Locally on Linux/WSL 🐧

📼 Roll the Tape - Recording Time!

Generate testcases

Run Tests

Wrapping it up 🎉

Contact Us