refactor(@angular/build): normalize unit test coverage options for consistency #31622
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…nsistency Previously, the unit test builder's `coverage` option was conditional. It was only defined if `coverage: true` was set, and it consolidated several top-level `coverage*` properties from the schema. This required downstream consumers, like the Karma and Vitest executors, to handle a potentially undefined object and led to complex and sometimes incorrect option merging, especially in the Vitest runner. This commit refactors the option normalization logic to ensure the `coverage` object is *always* defined. A new `enabled` flag, controlled by the main `coverage` option, is now part of this object.
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Previously, the unit test builder's
coverageoption was conditional. It was only defined ifcoverage: truewas set, and it consolidated several top-levelcoverage*properties from the schema. This required downstream consumers, like the Karma and Vitest executors, to handle a potentially undefined object and led to complex and sometimes incorrect option merging, especially in the Vitest runner.This commit refactors the option normalization logic to ensure the
coverageobject is always defined. A newenabledflag, controlled by the maincoverageoption, is now part of this object.