argosy-pattern
v2.1.0
Published
Test messages against Argosy patterns
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argosy-pattern
Test messages against Argosy patterns.
Part of the Argosy family.
example
var assert = require('assert'),
argosyPattern = require('argosy-pattern'),
match = require('argosy-pattern/match')
var pattern = argosyPattern({ hello: 'world', 'message.count': match.number })
var result = pattern.matches({
hello: 'world',
message: {
count: 42
}
})
assert(result)
api
var argosyPattern = require('argosy-pattern')
pattern = argosyPattern(object)
Create an Argosy pattern, given an object containing rules. Each key in the object represents a key
that is to be validated in compared message objects. These keys will be tested to have the same literal
value, matching regular expression, or to be of a given type using the matching system described below.
Nested keys may be matched using the dot notation. For example, {'message.count':1}
equates to
{message: {count: 1}}
.
pattern.matches(object)
Returns true of the given object matches the pattern, or false otherwise.
pattern.encode()
Returns an object, representing the pattern, suitable for serialization. This is used internally within Argosy.
matching
var match = require('argosy-pattern/match')
Argosy patterns support more than literal values. The values of the pattern keys may be any of the following in addition to literal values:
- A regular expression - values will be tested against the regular expression to determine a match
match.number
- matches any numbermatch.string
- matches any stringmatch.bool
- matchestrue
orfalse
match.array
- matches any arraymatch.object
- matches any truthy objectmatch.defined
- matches anything other thanundefined
match.undefined
- matchesundefined
or missing key
testing
npm test [--dot | --spec] [--grep=pattern]
Specifying --dot
or --spec
will change the output from the default TAP style.
Specifying --grep
will only run the test files that match the given pattern.
coverage
npm run coverage [--html]
This will output a textual coverage report. Including --html
will also open
an HTML coverage report in the default browser.