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You have completed Code Coverage with Istanbul!
You have completed Code Coverage with Istanbul!
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In this video we'll look at what a coverage report looks like and what it all means.
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Open the coverage folder and
then the lcov report folder.
0:00
This is the folder where your HTML
code coverage report is generated.
0:06
Open up the index.html in the web browser.
0:11
We can see the project folder name here.
0:15
A progress bar reporting how much the code
is covered and some other metrics.
0:18
We see that eight out of nine
statements have been tested.
0:25
In other words,
88.89% of the code is covered.
0:30
100% of the conditions have been covered.
0:36
Well, actually, there's no
conditional statements in the code.
0:39
So is 0 out of zero 100%?
0:44
I guess it is.
0:47
Then, we have 75% of the functions
in the code covered.
0:48
Not bad.
0:52
That's why it's highlighted in yellow.
0:53
Finally, the lions.
0:55
Eight out of nine lines
are covered in the code.
0:57
Let's dig into the report a little deeper.
0:59
Since our project is only one file,
there are no other directories and
1:02
there's only one file listed,
the index.js file.
1:07
And it has all the same
metrics as the project.
1:10
Let's click into the index.js file.
1:15
The red lines on this page
are the lines not covered by tests
1:19
In this case the multiply function.
1:23
In the next video,
we'll improve code coverage and
1:26
highlight another important
detail in this report.
1:29
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