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authorAbseil Team <absl-team@google.com>2019-11-19 16:57:57 (GMT)
committerGennadiy Civil <misterg@google.com>2019-11-20 19:16:45 (GMT)
commit4bf466236dbe1db812fab9264d800175eec1cd24 (patch)
tree87fcc9d798f07707fa35cc3b79e0598314c0eef9 /googlemock
parent50cfbb726b26700d143ce5bb55c0b5e86de7a1e6 (diff)
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Add a breadcrumb about nullopt comparison near the Optional() matcher. Also add a note about how otherwise-spurious 'Eq()' may be needed in some cases. Without this, something like Field(&MyStruct::optional_field_without_equals_equals, absl::nullopt) doesn't work - it converts the nullopt to an optional<> of the non-equalable type, and fails to select the operator==(optional<>, nullopt_t) overload. The Eq() lets the type persist later into the match. PiperOrigin-RevId: 281305519
Diffstat (limited to 'googlemock')
-rw-r--r--googlemock/docs/cheat_sheet.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/googlemock/docs/cheat_sheet.md b/googlemock/docs/cheat_sheet.md
index 975362b..f6e7349 100644
--- a/googlemock/docs/cheat_sheet.md
+++ b/googlemock/docs/cheat_sheet.md
@@ -266,7 +266,7 @@ Matcher | Description
| `IsTrue()` | `argument` evaluates to `true` in a Boolean context. |
| `IsNull()` | `argument` is a `NULL` pointer (raw or smart). |
| `NotNull()` | `argument` is a non-null pointer (raw or smart). |
-| `Optional(m)` | `argument` is `optional<>` that contains a value matching `m`. |
+| `Optional(m)` | `argument` is `optional<>` that contains a value matching `m`. (For testing whether an `optional<>` is set, check for equality with `nullopt`. You may need to use `Eq(nullopt)` if the inner type doesn't have `==`.)|
| `VariantWith<T>(m)` | `argument` is `variant<>` that holds the alternative of type T with a value matching `m`. |
| `Ref(variable)` | `argument` is a reference to `variable`. |
| `TypedEq<type>(value)` | `argument` has type `type` and is equal to `value`. You may need to use this instead of `Eq(value)` when the mock function is overloaded. |