Software Testing

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????? 13
?????????????????
( Software Testing )
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?????????????????
( Software Testing )
Testing is the process of executing a
program with the intent of finding errors
Glen Myers
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Software Testing
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Test Case Design
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White-Box Testing

• ???? Structured Testing
• ?????????????????????
• ????????????? Statement ??? Execute
• ????????? 1 ?????

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White-Box Testing
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Basis Path Testing

• ???? idea ?????????????? White-box
• ???????????
• ??????? Flowchart ??????? Graph
• ????????????? Vertices ??? Edge

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11
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1
2, 3
4, 5
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7
8
9
10
11
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Independent Path ?? 4 Path
Path 1 1 ,11 Path 2 1 ,2 ,3 ,4 ,5 ,10
,1 ,11 Path 3 1 ,2 ,3 ,6 ,8 ,9 ,10 ,1
,11 Path 4 1 ,2 ,3 ,6 ,7 ,9 ,10 ,1 ,11
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Cychomatic Complexity V(G)
????????????????? Basis Path
V(G) E - V 2
V Vertices E Edge
?????
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Black-Box Testing

• ???? Functional Testing
• ?? Input ?????????????? Output ??????????????

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Black-Box Testing
Input
Output
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Equivalence Partitioning

• ???? idea ?????????????? Black-box
• ???????????
• ??????????????????? Input , Output
• Test ??????????

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Testing Strategy
integration test
unit test
validation test
system test
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Unit Testing

• Test ???? Component

Function
Procedure

• ????? Response ????????????????

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Unit Testing
module to be tested
results
test cases
software engineer
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Unit Testing
module to be tested

interface
local data structures
boundary conditions
independent paths
error handling paths
test cases
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Integration Test

• Module Testing
• _at_ Test ???? Module
• _at_ ?????????? Module?????
• Sub-System Testing
• _at_ Test Module ????????????????
• _at_ ???????? Interface ??????? Module

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Integrate Testing

• Top-down Testing
• Bottom-up Testing
• Thread Testing
• Stress Testing
• Incremental Testing

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Top-down Testing

• Test ???????????

Sub-system Module
Unit
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Top Down Integration
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???????? Top-down Testing

• ??? errors ????
• ?? Cost
• ?????????? Redesign
• ??????????????
• ???????? User ?????????
• ???????????????????

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?????????? Top-down Testing

• Test ???
• ????????????? Level ?????

( Unit , Module )
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Bottom- Up Integration
A
B
F
G
drivers are replaced one at a
time, "depth first"
C
worker modules are grouped into
D
E
builds and integrated
cluster
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Bottom-up Testing

• Test ??? ???????????????
• ???????? ?????????? Top-down

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Thread Testing

• Test ???? Process ?? level ????????
• ?????? Top-down ??? Bottom-up
• ???????????

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Stress Testing

• ???????????????? Fail ???????
• ??????????????????

• Soft Fail
• Hard Fail

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Incremental Testing

• ???????????? Module ??? Test ?????????
• ??????

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System Testing

• Test ????????
• ( ??? Sub-system ???????????????? )

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Validation or Acceptance Testing

• Test ??? Data ????? ?????????
• ?????? System Requirement Definition ???????

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???????
System

Sub-
??????????
?????????
System
??????????

Module
???????????
???? ? ???????
?????,
???
Unit
???
????
????
????????
???????
???????
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Test Planning

• ???????????????????????????????? ?????
  ?????
• ???????? Errors
• Minimum Cost

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Test Plan ??????????

• Testing Process

• Requirement Traceability

• Tested Items

• Testing Schedule

• Test Recording Procedure

• H/W and S/W Require

• Constraints

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Test Phase
Earlier Phase Program Defect
Laster Phase VV
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Verification Validation
VV
??????????? VV

• ????????????????????????
• ????????????/????????? ?????????????????????
• ????????????

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??? Testing ??? VV ??????? 2 ??????

• Statistical Testing
• Defect Testing

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Statistical Testing

• ????????? Testing ???????????????????????????
  Actual inputs/outputs ????????????????????????????
  ???????????????????????????

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Defect Testing

• ??????????????????/???????????
• (Errors) ??????

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Test Data Test Case

• Test Data
• ??????? Test Data ??????????? Drive Program

• Test Case
• ?????? Test input output function spec.
• ???????????

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Alpha Beta Testing
Alpha Test
Software
Customer test
Developer Site
Customer Site
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Alpha Beta Testing
Beta Test
Customer test
Developer reviews
Software
Developer Site
Customer Site
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Who Test Software ?

• Developer
• Independent tester
• Customer

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????? 14
??????????????????? ????????????????
( Documentation and Maintenace )
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Documentation
??????????????? ??????????????????????????????????
?????????????????????? , ??????????
????????????????
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Documentation
??????????
System Documentation
User Documentation
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System Documentation
??????????
Requirement Specification
System Achitecture
Description Of the Design
Program Achitecture
Source Code
Test Plans And Reports
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User Documentation
??????????
?????????????????????? ???????????????????????
? ???????????????????? ????????????????????
???????????????????
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?????????????????????? ( Functional
description)

• ????????????????????????????
• ?????????????????????????

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???????????????????????? ( Introductory Manual
)

• ????????????????????????
• ????????????????????
• ??????????????????????????

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???????????????????? ( Reference Manual )

• ???????????????????????????????
• ?????????????????????

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???????????????????? ( Installation Document )

• ????????????????????????????????
• ???????????????????????????????????

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??????????????????? ( System Administrator
Guide )

• ?????????????????????
• ????????????????????????????

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Maintenance
?????????????????????????????????????????????????
???????????? ?????????? ?????????????????????????
???????????????????????????????????????