【移动应用开发技术】Android中怎么实现单元测试

【移动应用开发技术】Android中怎么实现单元测试

Android中怎么实现单元测试，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。Xml代码<

?xml

version="1.0"

encoding="utf-8"?>

<

manifest

xmlns:android="http://schemas.A/apk/res/Android"

package="your.tests.package">

<

application>

<

uses-library

Android:name="Android.test.runner"

/>

<

/application>

<

instrumentation

Android:name="Android.test.InstrumentationTestRunner"

Android:targetPackage="your.work.package"

Android:label="Tests

for

Api

Demos."/>

<

/manifest>

<

?xml

version="1.0"

encoding="utf-8"?>

<

manifest

xmlns:android="http://schemas.A/apk/res/Android"

package="your.tests.package">

<

application>

<

uses-library

Android:name="Android.test.runner"

/>

<

/application>

<

instrumentation

Android:name="Android.test.InstrumentationTestRunner"

Android:targetPackage="your.work.package"

Android:label="Tests

for

Api

Demos."/>

<

/manifest>

<

?xml

version="1.0"

encoding="utf-8"?>

<

manifest

xmlns:android="http://schemas.A/apk/res/Android"

package="your.tests.package">

<

application>

<

uses-library

Android:name="Android.test.runner"

/>

<

/application>

<

instrumentation

Android:name="Android.test.InstrumentationTestRunner"

Android:targetPackage="your.work.package"

Android:label="Tests

for

Api

Demos."/>

<

/manifest>

<

?xml

version="1.0"

encoding="utf-8"?>

<

manifest

xmlns:android="http://schemas.A/apk/res/Android"

package="your.tests.package">

<

application>

<

uses-library

Android:name="Android.test.runner"

/>

<

/application>

<

instrumentation

Android:name="Android.test.InstrumentationTestRunner"

Android:targetPackage="your.work.package"

Android:label="Tests

for

Api

Demos."/>

<

/manifest>

那么就可以做Android单元测试了，给出下面的实例；1.用AndroidTestCase;

Java代码public

class

SdcardTest

extends

AndroidTestCase

{

public

void

test1(){

//

Log.v()

File

f=new

File("/sdcard");

String[]

l=f.list();

this.assertTrue(f.exists());

this.assertTrue(f.isDirectory());

this.assertTrue(f.list().length>0);

}

}

public

class

SdcardTest

extends

AndroidTestCase

{

public

void

test1(){

//

Log.v()

File

f=new

File("/sdcard");

String[]

l=f.list();

this.assertTrue(f.exists());

this.assertTrue(f.isDirectory());

this.assertTrue(f.list().length>0);

}

}2.用ActivityUnitTestCase

Java代码

public

class

ForwardingTest

extends

ActivityUnitTestCase<

Forwarding>

{

private

Intent

mStartIntent;

private

Button

mButton;

public

ForwardingTest()

{

super(Forwarding.class);

}

@Override

protected

void

setUp()

throws

Exception

{

super.setUp();

//

In

setUp,

you

can

create

any

shared

test

data,

or

set

up

mock

components

to

inject

//

into

your

Activity.

But

do

not

call

startActivity()

until

the

actual

test

methods.

mStartIntent

=

new

Intent(Intent.ACTION_MAIN);

}

/**

*

The

name

'test

preconditions'

is

a

convention

to

signal

that

if

this

*

test

doesn't

pass,

the

test

case

was

not

set

up

properly

and

it

might

*

explain

any

and

all

failures

in

other

tests.

This

is

not

guaranteed

*

to

run

before

other

tests,

as

junit

uses

reflection

to

find

the

tests.

*/

@MediumTest

public

void

testPreconditions()

{

startActivity(mStartIntent,

null,

null);

mButton

=

(Button)

getActivity().findViewById(R.id.go);

assertNotNull(getActivity());

assertNotNull(mButton);

}

/**

*

This

test

demonstrates

examining

the

way

that

activity

calls

startActivity()

to

launch

*

other

activities.

*/

@MediumTest

public

void

testSubLaunch()

{

Forwarding

activity

=

startActivity(mStartIntent,

null,

null);

mButton

=

(Button)

activity.findViewById(R.id.go);

//

This

test

confirms

that

when

you

click

the

button,

the

activity

attempts

to

open

//

another

activity

(by

calling

startActivity)

and

close

itself

(by

calling

finish()).

mButton.performClick();

assertNotNull(getStartedActivityIntent());

assertTrue(isFinishCalled());

}

/**

*

This

test

demonstrates

ways

to

exercise

the

Activity's

life

cycle.

*/

@MediumTest

public

void

testLifeCycleCreate()

{

Forwarding

activity

=

startActivity(mStartIntent,

null,

null);

//

At

this

point,

onCreate()

has

been

called,

but

nothing

else

//

Complete

the

startup

of

the

activity

getInstrumentation().callActivityOnStart(activity);

getInstrumentation().callActivityOnResume(activity);

//

At

this

point

you

could

test

for

various

configuration

aspects,

or

you

could

//

use

a

Mock

Context

to

confirm

that

your

activity

has

made

certain

calls

to

the

system

//

and

set

itself

up

properly.

getInstrumentation().callActivityOnPause(activity);

//

At

this

point

you

could

confirm

that

the

activity

has

paused

properly,

as

if

it

is

//

no

longer

the

topmost

activity

on

screen.

getInstrumentation().callActivityOnStop(activity);

//

At

this

point,

you

could

confirm

that

the

activity

has

shut

itself

down

appropriately,

//

or

you

could

use

a

Mock

Context

to

confirm

that

your

activity

has

released

any

system

//

resources

it

should

no

longer

be

holding.

//

ActivityUnitTestCase.tearDown(),

which

is

always

automatically

called,

will

take

care

//

of

calling

onDestroy().

}

}

public

class

ForwardingTest

extends

ActivityUnitTestCase<

Forwarding>

{

private

Intent

mStartIntent;

private

Button

mButton;

public

ForwardingTest()

{

super(Forwarding.class);

}

@Override

protected

void

setUp()

throws

Exception

{

super.setUp();

//

In

setUp,

you

can

create

any

shared

test

data,

or

set

up

mock

components

to

inject

//

into

your

Activity.

But

do

not

call

startActivity()

until

the

actual

test

methods.

mStartIntent

=

new

Intent(Intent.ACTION_MAIN);

}

/**

*

The

name

'test

preconditions'

is

a

convention

to

signal

that

if

this

*

test

doesn't

pass,

the

test

case

was

not

set

up

properly

and

it

might

*

explain

any

and

all

failures

in

other

tests.

This

is

not

guaranteed

*

to

run

before

other

tests,

as

junit

uses

reflection

to

find

the

tests.

*/

@MediumTest

public

void

testPreconditions()

{

startActivity(mStartIntent,

null,

null);

mButton

=

(Button)

getActivity().findViewById(R.id.go);

assertNotNull(getActivity());

assertNotNull(mButton);

}

/**

*

This

test

demonstrates

examining

the

way

that

activity

calls

startActivity()

to

launch

*

other

activities.

*/

@MediumTest

public

void

testSubLaunch()

{

Forwarding

activity

=

startActivity(mStartIntent,

null,

null);

mButton

=

(Button)

activity.findViewById(R.id.go);

//

This

test

confirms

that

when

you

click

the

button,

the

activity

attempts

to

open

//

another

activity

(by

calling

startActivity)

and

close

itself

(by

calling

finish()).

mButton.performClick();

assertNotNull(getStartedActivityIntent());

assertTrue(isFinishCalled());

}

/**

*

This

test

demonstrates

ways

to

exercise

the

Activity's

life

cycle.

*/

@MediumTest

public

void

testLifeCycleCreate()

{

Forwarding

activity

=

startActivity(mStartIntent,

null,

null);

//

At

this

point,

onCreate()

has

been

called,

but

nothing

else

//

Complete

the

startup

of

the

activity

getInstrumentation().callActivityOnStart(activity);

getInstrumentation().callActivityOnResume(activity);

//

At

this

point

you