mirror of
https://github.com/catchorg/Catch2.git
synced 2024-12-24 20:13:30 +01:00
56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
# Logging macros
|
|
|
|
Additional messages can be logged during a test case.
|
|
|
|
## Streaming macros
|
|
|
|
All these macros allow heterogenous sequences of values to be streaming using the insertion operator (```<<```) in the same way that std::ostream, std::cout, etc support it.
|
|
|
|
E.g.:
|
|
```c++
|
|
INFO( "The number is " << i );
|
|
```
|
|
|
|
(Note that there is no initial ```<<``` - instead the insertion sequence is placed in parentheses.)
|
|
These macros come in three forms:
|
|
|
|
**INFO(** _message expression_ **)**
|
|
|
|
The message is logged to a buffer, but only reported with the next assertion that is logged. This allows you to log contextual information in case of failures which is not shown during a successful test run (for the console reporter, without -s). Messages are removed from the buffer at the end of their scope, so may be used, for example, in loops.
|
|
|
|
**WARN(** _message expression_ **)**
|
|
|
|
The message is always reported but does not fail the test.
|
|
|
|
**FAIL(** _message expression_ **)**
|
|
|
|
The message is reported and the test case fails.
|
|
|
|
**FAIL_CHECK(** _message expression_ **)**
|
|
|
|
AS `FAIL`, but does not abort the test
|
|
|
|
## Quickly capture a variable value
|
|
|
|
**CAPTURE(** _expression_ **)**
|
|
|
|
Sometimes you just want to log the name and value of a variable. While you can easily do this with the INFO macro, above, as a convenience the CAPTURE macro handles the stringising of the variable name for you (actually it works with any expression, not just variables).
|
|
|
|
E.g.
|
|
```c++
|
|
CAPTURE( theAnswer );
|
|
```
|
|
|
|
This would log something like:
|
|
|
|
<pre>"theAnswer := 42"</pre>
|
|
|
|
## Deprecated macros
|
|
|
|
**SCOPED_INFO and SCOPED_CAPTURE**
|
|
|
|
These macros are now deprecated and are just aliases for INFO and CAPTURE (which were not previously scoped).
|
|
|
|
---
|
|
|
|
[Home](Readme.md) |