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Documented the _THROWS_WITH macros, as well as slightly expanding the matchers docs.

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Phil Nash 2017-02-08 16:18:53 +00:00
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docs/assertions.md
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@ -63,6 +63,11 @@ When dealing with very large or very small numbers it can be useful to specify a
## Exceptions
* **REQUIRE_NOTHROW(** _expression_ **)** and
* **CHECK_NOTHROW(** _expression_ **)**
Expects that no exception is thrown during evaluation of the expression.
* **REQUIRE_THROWS(** _expression_ **)** and
* **CHECK_THROWS(** _expression_ **)**
@ -73,10 +78,16 @@ Expects that an exception (of any type) is be thrown during evaluation of the ex
Expects that an exception of the _specified type_ is thrown during evaluation of the expression.
* **REQUIRE_NOTHROW(** _expression_ **)** and
* **CHECK_NOTHROW(** _expression_ **)**
* **REQUIRE_THROWS_WITH(** _expression_, _string or string matcher_ **)** and
* **CHECK_THROWS_WITH(** _expression_, _string or string matcher_ **)**
Expects that no exception is thrown during evaluation of the expression.
Expects that an exception is thrown that, when converted to a string, matches the _string_ or _string matcher_ provided (see next section for Matchers).
e.g.
```cpp
REQUIRE_THROWS_WITH( openThePodBayDoors(), Contains( "afraid" ) && Contains( "can't do that" ) );
REQUIRE_THROWS_WITH( dismantleHal(), "My mind is going" );
```
Please note that the `THROW` family of assertions expects to be passed a single expression, not a statement or series of statements. If you want to check a more complicated sequence of operations, you can use a C++11 lambda function.
@ -96,9 +107,12 @@ REQUIRE_NOTHROW([&](){
To support Matchers a slightly different form is used. Matchers will be more fully documented elsewhere. *Note that Matchers are still at early stage development and are subject to change.*
* **REQUIRE_THAT(** _lhs_, _matcher call_ **)** and
* **CHECK_THAT(** _lhs_, _matcher call_ **)**
* **REQUIRE_THAT(** _lhs_, _matcher expression_ **)** and
* **CHECK_THAT(** _lhs_, _matcher expression_ **)**
Currently only string matchers are implemented and consist of: `Contains`, `Equals`, `StartsWith` and `EndsWith`.
Matchers can be composed using `&&`, `||` and `!` operators.
---