我的 karma 覆盖率报告指出,下面的示例未涵盖我的“else”分支,但它已经过测试。知道为什么 karma-coverage 无法识别我的测试吗?
utilities.service.js:
function formatValue(value, form) {
if (form === '2') {
valueFormatted = twoDecimals(value);
} else if (form === '4') {
valueFormatted = fourDecimals(value);
}
return valueFormatted + '!';
}
utilitiesServiceSpec.js:
describe('format values', function() {
var formattedValue;
var value;
var form;
it('should format 2 decimal places', function() {
value = 100;
form = '2';
formattedValue = utilitiesService.formatValue(value, form);
expect(formattedValue).toEqual('100.00!');
});
it('should format 4 decimal places', function() {
value = 100;
form = '4';
formattedValue = utilitiesService.formatValue(value, form);
expect(formattedValue).toEqual('100.0000!');
});
});
最佳答案
事实上 karma 覆盖是正确的。您错过了测试 else 分支。
describe( 'format values', function() {
var formattedValue;
var value;
var form;
// Will test if (form === '2')
it( 'should format 2 decimal places', function() {
value = 100;
form = '2';
formattedValue = utilitiesService.formatValue( value, form );
expect( formattedValue ).toEqual( '100.00!' );
} );
// Will test else if (form === '4')
it( 'should format 4 decimal places', function() {
value = 100;
form = '4';
formattedValue = utilitiesService.formatValue( value, form );
expect( formattedValue ).toEqual( '100.0000!' );
} );
//Will test else
it( 'should test if value should not be formatted to decimal if form is other than 2 and 4', function() {
value = 100;
form = '5';
formattedValue = utilitiesService.formatValue( value, form );
expect( formattedValue ).toEqual( '100!' );
} );} );
考虑你的utilities.service.js
function formatValue( value, form ) {
var valueFormatted = value;
if ( form === '2' ) {
valueFormatted = twoDecimals( value );
} else if ( form === '4' ) {
valueFormatted = fourDecimals( value );
}
return valueFormatted + '!';}
或
function formatValue( value, form ) {
var valueFormatted;
if ( form === '2' ) {
valueFormatted = twoDecimals( value );
} else if ( form === '4' ) {
valueFormatted = fourDecimals( value );
} else {
valueFormatted = value;
}
return valueFormatted + '!';}
关于javascript - Karma 覆盖范围无法识别分支测试,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31387664/