Jest Console: Add new matchers for console.log and console.info

[gziolo]

It was raised a few times in the past that @wordpress/jest-console supports only console.error and console.warn. We discussed that we should have a similar handling for console.log and console.info. This PR adds 4 new methods to @wordpress/jest-console package:

.toHaveInformed()

Use .toHaveInformed to ensure that console.info function was called.

Almost identical usage as .toHaveErrored().

.toHaveInformedWith( arg1, arg2, ... )

Use .toHaveInformedWith to ensure that console.info function was called with
specific arguments.

Almost identical usage as .toHaveErroredWith().

.toHaveLogged()

Use .toHaveLogged to ensure that console.log function was called.

Almost identical usage as .toHaveErrored().

.toHaveLoggedWith( arg1, arg2, ... )

Use .toHaveLoggedWith to ensure that console.log function was called with
specific arguments.

Almost identical usage as .toHaveErroredWith().

Testing

npm test should pass.

You can also add console.log and console.info in the source code or unit test to make sure it fails test that is using it when the matcher is not provided.

console.log( 'Test will fail' );

In addition, you can add expectation with matcher that is not used in the code to make sure that it fails because condition was not met:

expect( console ).toHaveLogged();

[gziolo]

It will also make wp-scripts test-unit-js fail when code uses console.log and console.info, so we will have to bump @wordpress/scripts - ideally we should align it with Babel 7 upgrade.

[codecov]

Codecov Report

Merging #137 into master will increase coverage by 0.19%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #137      +/-   ##
==========================================
+ Coverage   67.04%   67.23%   +0.19%     
==========================================
  Files          58       59       +1     
  Lines         698      699       +1     
  Branches      145      145              
==========================================
+ Hits          468      470       +2     
+ Misses        187      186       -1     
  Partials       43       43

Impacted Files	Coverage Δ
packages/jest-console/src/supported-matchers.js	100% <100%> (ø)
packages/scripts/utils/index.js	97.22% <100%> (-0.08%)	⬇️
packages/jest-console/src/index.js	88.88% <100%> (+8.88%)	⬆️
packages/jest-console/src/matchers.js	91.66% <100%> (+0.75%)	⬆️

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[aduth]

We should clarify that this is a breaking change ("Breaking:" prefix) and some hint to in what way it breaks / how consumers can update their code.

[gziolo]

Good point, I will add details.