Module matchers 

All built-in matchers of this crate are in submodules of this module.

Macros

all

Matches a value which all of the given matchers match.

any

Matches a value which at least one of the given matchers match.

contains_each

Matches a container containing elements matched by the given matchers.

elements_are

Matches a container’s elements to each matcher in order.

field

Matches a structure or enum with a given field which is matched by a given matcher.

is_contained_in

Matches a container all of whose elements are matched by the given matchers.

matches_pattern

Matches a value according to a pattern of matchers.

pat

An alias for matches_pattern.

pointwise

Generates a matcher which matches a container each of whose elements match the given matcher name applied respectively to each element of the given container.

property

Matches an object which, upon calling the given method on it with the given arguments, produces a value matched by the given inner matcher.

result_of

Matches a value where the result of callable applied to the value matches the inner matcher.

result_of_ref

Matches a value where the reference to the result of callable applied to the value matches the inner matcher.

unordered_elements_are

Matches a container whose elements in any order have a 1:1 correspondence with the provided element matchers.

Structs

ContainsMatcher

A matcher which matches a container containing one or more elements a given inner Matcher matches.

EqMatcher

A matcher which matches a value equal to expected.

NearMatcher

A matcher which matches floating-point numbers approximately equal to its expected value.

PredicateMatcher

A matcher which applies predicate on the value.

StrMatcher

A matcher which matches equality or containment of a string-like value in a configurable way.

Traits

StrMatcherConfigurator

Extension trait to configure StrMatcher.

Functions

anything

Matches anything. This matcher always succeeds.

approx_eq

Matches a value approximately equal to expected.

char_count

Matches a string whose number of Unicode scalars matches expected.

container_eq

Matches a container equal (in the sense of ==) to expected.

contains

Matches an IntoIterator type whose elements contain a value matched by inner.

contains_regex

Matches a string containing a substring which matches the given regular expression.

contains_substring

Matches a string containing a given substring.

derefs_to

Dereferences the actual value and verifies that the returned reference matches the inner matcher.

displays_as

Matches the string representation of types that implement Display.

each

Matches a container all of whose elements are matched by the matcher inner.

emptyDeprecated

This is deprecated. Use is_empty() instead.

ends_with

Matches a string which ends with the given suffix.

eq

Matches a value equal (in the sense of ==) to expected.

err

Matches a Result containing Err with a value matched by inner.

ge

Matches a value greater than or equal to (in the sense of >=) expected.

gt

Matches a value greater (in the sense of >) than expected.

has_entry

Matches a &HashMap containing the given key whose value is matched by the matcher inner.

is_empty

Matches an empty container.

is_false

Matches boolean value false.

is_finite

Matches a floating point value which is Finite.

is_infinite

Matches a floating point value which is Infinite.

is_nan

Matches a floating point value which is NaN.

is_true

Matches boolean value true.

is_utf8_string

Matches a byte sequence which is a UTF-8 encoded string matched by inner.

le

Matches a value less than or equal to (in the sense of <=) expected.

len

Matches a container whose number of elements matches expected.

lt

Matches a value less (in the sense of <) than expected.

matches_regex

Matches a string the entirety of which which matches the given regular expression.

near

Matches a value equal within max_abs_error of expected.

none

Matches an Option containing None.

not

Matches the actual value exactly when the inner matcher does not match.

ok

Matches a Result containing Ok with a value matched by inner.

points_to

Matches a reference pointing to a value matched by the Matcher expected.

predicate

Creates a matcher based on the predicate provided.

some

Matches an Option containing a value matched by inner.

starts_with

Matches a string which starts with the given prefix.

subset_of

Matches a container all of whose items are in the given container superset.

superset_of

Matches a container containing all of the items in the given container subset.