This document describes a Wi-Fi communication system project. It includes an introduction to the project, the technologies used like Android Studio, networking devices, and Wi-Fi. It outlines the system design with context and data flow diagrams. It also details the implementation and testing approach with unit, device discovery, data transfer, and integrated testing. Finally, it provides a user manual describing the input, discovery menu, chat confirmation, chat menu, and about menu screens.

1. WI-FI COMMUNICATION
MAJOR PROJECT PRESENTED BY- DIPANKAR BORUAH

2. CONTENTS
 INTRODUCTION
 TECHNOLOGIES USED
 SYSTEM DESIGN
 IMPLEMENTATIONAND TESTING
 USER MENUAL

3. INTRODUCTION
WI-FI COMMUNICATION OPERATING SYSTEM PROGRAMING
LANGUAGE

4. TECHNOLOGIES USED
NETWORK DEVICE IDE
WI-FI ANDROID
DEVICE
WI-FI ROUTER ANDROID
DEVICE
ANDROID
STUDIO

5. SYSTEM DESIGN
Context Diagram

6. Data Flow Diagram
Level 1 DFD:

7. Level 2 DFD:

8. IMPLANTATIONANDTESTING
WI-FI SCANNING FRONT-END DESIGN INTERACTION
MENU

9. TestingApproach:
Unit Testing:
Sl. No. Testcase Input Expectedresult Output Testresult
1
Entering name in text
input
Characters and
numbers
It should accept the
name and start
searching
Started searching Successful
2
Entering name in text
input
No input
It should show a toast
message “Please type
your name”
Please type yourname Successful
3
Clicking on “Click To
Start” button
Clicked on “Click
To Start” button
Should start searching
and show the
available list if not
found should stop
searching after 30
second.
Provided the list. Successful
Stopped searching after
30 second
Successful
4
Clicking on any available
users
Clicked on an
available user.
Should open a popup
request to join in the
other user app.
A popup is opened in the
other user app either to
accept orreject the
request.
Successful
Device discovery Test

10. Sl.
No
.
Test case Input
Expected
result
Output Test result
1 SendingText abcd@1
Input text will
be sent as it is.
abcd@1 Successful
2 Receiving text
Text will be
received from
connected user
Text received Successful
3 Blank text test Empty
Sending button
disabled
BlankText
sent
Failed
Data Transfer Test:

11. Integrated testing:
Sl.
No.
Test case Input
Expected
result
Output Test result
1
Opening the app by
clicking on the app
icon
Clicked on the
app icon
The app should
launched without
any error.
App opened
without any
error.
Successful
2
Trying to search for
available devices
Clicked on
“Click to
Start” button
Should show all
the available
devices
Available
devices are
shown
Successful
3
Trying to connect to
other devices
Selected an
available device
Should transfer
to Chat menu
ones request is
accepted
Chat menu
opened
Successful
4
Trying to send and
receive message
Abc@1/aBc@
2
Should display
both users
messages
aBc@2/Abc@
1
successful

12. USER MANUAL
Input
User
Name
Button
for
Searching
available
devices
Small
Animation
button
Loading Screen:
About us

13. Discovery Menu:
List of
available
device
Button to
stop discovery

14. Chat Confirmation popup:
Popup
request
Reject
Request
Accept
Request

15. Chat Menu:
Exit Chat
Other users
message
Your
message
Other users
name
Message
Input
Send button

16. About Menu:
About the
app.
Version
detail
Support &
Updates

17. THANKYOU