Add number of metrics analyzer

[timur-harin]

@yegor256 In this PR, I added:

• Complex Java class to check number of metrics
• Check that number is equivalent with number of metrics of simple Java class Foo

Now the result of sudo make test TEST=tests/steps/test-measure-file.sh

steps/test-measure-file.sh:
👍🏻 Single file measured correctly
👍🏻 Broken syntax measured and error log created
👍🏻 Complex file measured correctly
👍🏻 Number of metrics matches for simple and complex Java files: 62 metrics

[timur-harin]

@yegor256 Please check this important PR for metrics

[yegor256]

@timur-harin looks good! However, you broke the structure that we use in all our tests. Don't go outside of the {...} layout and don't make your own error message. Just exit 1 if the test fails. Also, don't modify an existing test, but add your own new test at the bottom.

[timur-harin]

@yegor256 But we had to remove expected in this file what I discussed in Issue #282

So you suggest creating another file test-number-of-metrics.sh with the same logic and return everything back in test-measure-file.sh besides analysing the number of metrics?

[yegor256]

@timur-harin no need to create a new file. Just take the test-measure-file.sh file, remove the line where we check the number of metrics and commit. Then, add a new test at the bottom of this file -- the test that you created.

[timur-harin]

@yegor256 I applied your suggestions:

• Separate test
• All inside {}
• Success message now 👍🏻 Number of metrics matches for simple and complex Java files: 62 metrics

[yegor256]

@timur-harin excellent work, thanks!