How to write test case coverage in Jest and Enzyme for indexOf used inside React Component
I am writing test case for my react component in Jest and Enzyme. I have a component where I have used indexOf method. Now when I am running Jest, it showing that test is uncovered for that particular line.
Coverage Report:
reactjs jestjs enzyme
edited Nov 11 at 22:03
skyboyer
3,32111128
asked Jun 28 at 11:34
Manoj
3081515
add a comment |
I am writing test case for my react component in Jest and Enzyme. I have a component where I have used indexOf method. Now when I am running Jest, it showing that test is uncovered for that particular line.
Coverage Report:
reactjs jestjs enzyme
edited Nov 11 at 22:03
skyboyer
3,32111128
asked Jun 28 at 11:34
Manoj
3081515
add a comment |
I am writing test case for my react component in Jest and Enzyme. I have a component where I have used indexOf method. Now when I am running Jest, it showing that test is uncovered for that particular line.
Coverage Report:
reactjs jestjs enzyme
edited Nov 11 at 22:03
skyboyer
3,32111128
asked Jun 28 at 11:34
Manoj
3081515
I am writing test case for my react component in Jest and Enzyme. I have a component where I have used indexOf method. Now when I am running Jest, it showing that test is uncovered for that particular line.
Coverage Report:
reactjs jestjs enzyme
reactjs jestjs enzyme
edited Nov 11 at 22:03
skyboyer
3,32111128
asked Jun 28 at 11:34
Manoj
3081515
edited Nov 11 at 22:03
skyboyer
3,32111128
asked Jun 28 at 11:34
Manoj
3081515
edited Nov 11 at 22:03
skyboyer
3,32111128
edited Nov 11 at 22:03
skyboyer
3,32111128
edited Nov 11 at 22:03
skyboyer
3,32111128
3,32111128
asked Jun 28 at 11:34
Manoj
3081515
asked Jun 28 at 11:34
Manoj
3081515
asked Jun 28 at 11:34
Manoj
3081515
3081515
add a comment |
add a comment |
1 Answer
1
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oldest
votes
You can create a function that returns the result of arrError.indexOf(..) but !!!! It's not a good practice.
First of all you should not test methods and functions that are from other frameworks and libraries and that you don't code yourself. If you want to test anything you should test every lifecycle method of React, every single method of Math, Array, etc.
Second, the key it's better to not be just an index and the use of indexOf is not necessary.
First approach, not the best, you can do directly:
{arrError.map((error, index) => (<div key = {index}>{error}</div>))}
Second approach, you don't have to use just the index for key (read this):
{arrError.map((error, index) => (<div key = {error.id}>{error.value}</div>))}
Each object in the array should have a unique property to use as key (you can even use a string. If error is a string and it's unique in the array you can just use error as key).
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
add a comment |
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1 Answer
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active
oldest
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1 Answer
1
active
oldest
votes
active
oldest
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active
oldest
votes
You can create a function that returns the result of arrError.indexOf(..) but !!!! It's not a good practice.
First of all you should not test methods and functions that are from other frameworks and libraries and that you don't code yourself. If you want to test anything you should test every lifecycle method of React, every single method of Math, Array, etc.
Second, the key it's better to not be just an index and the use of indexOf is not necessary.
First approach, not the best, you can do directly:
{arrError.map((error, index) => (<div key = {index}>{error}</div>))}
Second approach, you don't have to use just the index for key (read this):
{arrError.map((error, index) => (<div key = {error.id}>{error.value}</div>))}
Each object in the array should have a unique property to use as key (you can even use a string. If error is a string and it's unique in the array you can just use error as key).
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
add a comment |
You can create a function that returns the result of arrError.indexOf(..) but !!!! It's not a good practice.
First of all you should not test methods and functions that are from other frameworks and libraries and that you don't code yourself. If you want to test anything you should test every lifecycle method of React, every single method of Math, Array, etc.
Second, the key it's better to not be just an index and the use of indexOf is not necessary.
First approach, not the best, you can do directly:
{arrError.map((error, index) => (<div key = {index}>{error}</div>))}
Second approach, you don't have to use just the index for key (read this):
{arrError.map((error, index) => (<div key = {error.id}>{error.value}</div>))}
Each object in the array should have a unique property to use as key (you can even use a string. If error is a string and it's unique in the array you can just use error as key).
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
add a comment |
You can create a function that returns the result of arrError.indexOf(..) but !!!! It's not a good practice.
First of all you should not test methods and functions that are from other frameworks and libraries and that you don't code yourself. If you want to test anything you should test every lifecycle method of React, every single method of Math, Array, etc.
Second, the key it's better to not be just an index and the use of indexOf is not necessary.
First approach, not the best, you can do directly:
{arrError.map((error, index) => (<div key = {index}>{error}</div>))}
Second approach, you don't have to use just the index for key (read this):
{arrError.map((error, index) => (<div key = {error.id}>{error.value}</div>))}
Each object in the array should have a unique property to use as key (you can even use a string. If error is a string and it's unique in the array you can just use error as key).
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
You can create a function that returns the result of arrError.indexOf(..) but !!!! It's not a good practice.
First of all you should not test methods and functions that are from other frameworks and libraries and that you don't code yourself. If you want to test anything you should test every lifecycle method of React, every single method of Math, Array, etc.
Second, the key it's better to not be just an index and the use of indexOf is not necessary.
First approach, not the best, you can do directly:
{arrError.map((error, index) => (<div key = {index}>{error}</div>))}
Second approach, you don't have to use just the index for key (read this):
{arrError.map((error, index) => (<div key = {error.id}>{error.value}</div>))}
Each object in the array should have a unique property to use as key (you can even use a string. If error is a string and it's unique in the array you can just use error as key).
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
answered Jun 28 at 15:17
Paolo Dell'Aguzzo
606410
606410
add a comment |
add a comment |
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