Softwaretesting 03 eng

ソフトウェアテスト
　　 [3] ソフトウェア開発プロプロ
セス
Software Testing
[3] Software Development Process
あまん ひろひさ ひろひさ

阿萬 裕久 裕久（ AMAN

Hirohisa ）

(C) 2007-2022 Hirohisa AMAN

1


Outline of software development
 Development plan (overall plan)
 Requirements analysis
 Design
 Implementation
 Test

develop
ment
process

 Operation/maintenance
(C) 2007-2022 Hirohisa AMAN

2

(0) Development plan
 Setup 　→　　 Estimation 　→　　 Preparat
ion
What kind
By when
Make or Set

man-hours & cost

Determination of development method

Preparation
• Staffing
• Budget
• Environment
(C) 2007-2022 Hirohisa AMAN

3


(0) Development plan: Determinati
on of development method
Basic policy
• Newly develop?
• Based on existing system?
Calculate the scale of development
(e.g.) How much code need to write?

Effective in estimating man-hours and costs
Many other issues to consider

Securing human resources? Environment? Budget?
(C) 2007-2022 Hirohisa AMAN

4


Artifact

Requirements
specifications

(1) Requirements analysis
 Business analysis

 Analyze and organize the work to be achi
eved of software

 Description of request
 Unambiguous and precise description
 Consider feasibility: function, cost, delive
ry date

(C) 2007-2022 Hirohisa AMAN

5

[example]Bulletin notification system
(1) Requirements analysis
 I want a system that notifies me
when a notice related to me appears
 Real-time? Organized by day?
 How to be noticed
 Register/change notification recipients?
 Protect identity and security

 Post content input format
 Conditions for "related postings" in the
first place?
(C) 2007-2022 Hirohisa AMAN

6


[Exercise 1]
 Requests from customers
“I want you to create a system that allo
ws you to check the congestion status o
f the cafeteria with your smartphone."
 Consider and list the items that should
be confirmed with the customer when cr
eating the requirement specifications.

(C) 2007-2022 Hirohisa AMAN

7

External specifications
Artifact

(2-1) External design

Split target system  subsystems
Design external specifications for each subsystem
users & external systems

whole system

Kind of
functions
Kind of interface

How do you
operate it?

In what way
exchange data and
control do?

subsystem
(C) 2007-2022 Hirohisa AMAN

8


Artifact

Internal specifications

(2-2) Internal design
About the contents of each external design
Design the Program specifications in detail
Program structure
(work as a function
allocation)
•
Specifications of
each function (input /
output, functions)
•
Data structure and
algorithm
•
subsystem

functionA.

functionB. functionC.
functionD. functionF.

(C) 2007-2022 Hirohisa AMAN

9


[example]Bulletin notification system

(2-1) External design

content
mgmt
user

send
mgmt

user
mgmt

Participants
database

(C) 2007-2022 Hirohisa AMAN

Information input
person

User
database

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[example]Bulletin notification system
(2-2) Internal design
 Transmission management subsystem
Outbound Management Main

Create a recipient listContent creation Send Message

Search in database

Destination data structure?
Do you want to?
How to link with database?
How to send a message?

(C) 2007-2022 Hirohisa AMAN

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(3) Implementation
Coding based on internal specifications
 Using a programming language
 Create Program specifications or flow
chars as a related document
Artifact

Program specifications
Source code
(C) 2007-2022 Hirohisa AMAN

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[example]Bulletin notification system

(3) Implementation
 Use the appropriate libraries and progra
mming languages to achieve the desire
d functionality
 Take advantage of OS-specific features →　 C
 Databases Integration →　Java or Python

 Consider maintenance later, and actively and actively
create documents such as program speci
fications and flowcharts.
(C) 2007-2022 Hirohisa AMAN

13


(4) Test

Artifact

Test specification
Test report

Test that the software works properly
 Functions (modules) according to the program sp
ecifications? →　Unit test
 Subsystem meet Internal specifications? →　Integr
ation test
 System meet External specifications?
→　System test
 System meet Requirement specifications? →　Acce

ptance test
(C) 2007-2022 Hirohisa AMAN

14


(4) Test
 Unit test
Does it work correctly at a single component (function,
etc.) level?

 Integration test
Does it work correctly when several parts are connected
(a function calls another function, etc.)?

 System test
Does the system work as design and to specification? 　

 Acceptance test
Does the system work in a way that the customer is sati
sfied with?
(C) 2007-2022 Hirohisa AMAN

15


(5) Operation and maintenance
User Operations &
Maintenance upon defect
discovery and correction request

 Prior to operation, create operation manual
 If a failure occurs, Report and respond to it
is recorded and retained

Various manuals
Artifact

Failure/Response Report

(C) 2007-2022 Hirohisa AMAN

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[example]Bulletin notification system
(5) Operation and maintenance
 Operation
 Report any problems
 If there is a request, ask for it

 Maintenance

Bugzilla or JIRA
(Bug management
system)

 Bug fix
 Respond to requests

(C) 2007-2022 Hirohisa AMAN

→　

17


[Exercise 2]
Answer the applicable process
 Answer which process corresponds to the follo
wing tasks.
“Cafeteria congestion check system"
① Congestion data will be
structured data consisting
of the time of (d,h,m), seat
occupancy rate (%), and
will be recorded in a file at
3-minute intervals.

③ System configuration
(1) Congestion data management
(2) User interface section
(3) Controll section
④ Conducted a user survey & sorted
out issues that need improvement

② Confirm the behavior of performing access for 1,000 people
at the same time before full operation or access outside
business hours.
(C) 2007-2022 Hirohisa AMAN

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Typical examples of process models
 Waterfall model
 Prototyping
 Spiral model

(C) 2007-2022 Hirohisa AMAN

19


Waterfall Model
 Proceed in sequence
Requirements
analysis

 Features:
Easy to grasp the progress
The division of work is clear

External design
Internal design

Implementation
Test
Operation/maintenance
(C) 2007-2022 Hirohisa AMAN

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