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99 lines
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99 lines
3.1 KiB
Markdown
<a id="top"></a>
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# Deprecations and incoming changes
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This page documents current deprecations and upcoming planned changes
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inside Catch2. The difference between these is that a deprecated feature
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will be removed, while a planned change to a feature means that the
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feature will behave differently, but will still be present. Obviously,
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either of these is a breaking change, and thus will not happen until
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at least the next major release.
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## Deprecations
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### `--list-*` return values
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The return codes of the `--list-*` family of command line arguments
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will no longer be equal to the number of tests/tags/etc found, instead
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it will be 0 for success and non-zero for failure.
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### `--list-test-names-only`
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`--list-test-names-only` command line argument will be removed.
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### `ANON_TEST_CASE`
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`ANON_TEST_CASE` is scheduled for removal, as it can be fully replaced
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by a `TEST_CASE` with no arguments.
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### Secondary description amongst tags
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Currently, the tags part of `TEST_CASE` (and others) macro can also
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contain text that is not part of tags. This text is then separated into
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a "description" of the test case, but the description is then never used
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apart from writing it out for `--list-tests -v high`.
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Because it isn't actually used nor documented, and brings complications
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to Catch2's internals, description support will be removed.
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### SourceLineInfo::empty()
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There should be no reason to ever have an empty `SourceLineInfo`, so the
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method will be removed.
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## Planned changes
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### Reporter verbosities
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The current implementation of verbosities, where the reporter is checked
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up-front whether it supports the requested verbosity, is fundamentally
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misguided and will be changed. The new implementation will no longer check
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whether the specified reporter supports the requested verbosity, instead
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it will be up to the reporters to deal with verbosities as they see fit
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(with an expectation that unsupported verbosities will be, at most,
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warnings, but not errors).
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### Output format of `--list-*` command line parameters
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The various list operations will be piped through reporters. This means
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that e.g. XML reporter will write the output as machine-parseable XML,
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while the Console reporter will keep the current, human-oriented output.
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### `CHECKED_IF` and `CHECKED_ELSE`
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To make the `CHECKED_IF` and `CHECKED_ELSE` macros more useful, they will
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be marked as "OK to fail" (`Catch::ResultDisposition::SuppressFail` flag
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will be added), which means that their failure will not fail the test,
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making the `else` actually useful.
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### Change semantics of `[.]` and tag exclusion
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Currently, given these 2 tests
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```cpp
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TEST_CASE("A", "[.][foo]") {}
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TEST_CASE("B", "[.][bar]") {}
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```
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specifying `[foo]` as the testspec will run test "A" and specifying
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`~[foo]` will run test "B", even though it is hidden. Also, specifying
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`~[baz]` will run both tests. This behaviour is often surprising and will
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be changed so that hidden tests are included in a run only if they
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positively match a testspec.
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### Console Colour API
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The API for Catch2's console colour will be changed to take an extra
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argument, the stream to which the colour code should be applied.
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---
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[Home](Readme.md#top)
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