Voorhees

A library for validating JSON responses

Documentation

API documentation can be found at http://hexdocs.pm/voorhees

Examples

Voorhees.matches_payload?

Expected payload keys can be either strings or atoms

iex> payload = ~S[{ "foo": 1, "bar": "baz" }]
iex> Voorhees.matches_payload?(payload, %{ :foo => 1, "bar" => "baz" })
true

Extra key/value pairs in payload are ignored

iex> payload = ~S[{ "foo": 1, "bar": "baz", "boo": 3 }]
iex> Voorhees.matches_payload?(payload, %{ :foo => 1, "bar" => "baz" })
true

Extra key/value pairs in expected payload cause the validation to fail

iex> payload = ~S[{ "foo": 1, "bar": "baz"}]
iex> Voorhees.matches_payload?(payload, %{ :foo => 1, "bar" => "baz", :boo => 3 })
false

Validates scalar lists

iex> payload = ~S/{ "foo": 1, "bar": ["baz"]}/
iex> Voorhees.matches_payload?(payload, %{ :foo => 1, "bar" => ["baz"] })
true

# Order is respected
iex> payload = ~S/{ "foo": 1, "bar": [1, "baz"]}/
iex> Voorhees.matches_payload?(payload, %{ :foo => 1, "bar" => ["baz", 1] })
false

Validates lists of objects

iex> payload = ~S/[{ "foo": 1, "bar": { "baz": 2 }}]/
iex> Voorhees.matches_payload?(payload, [%{ :foo => 1, "bar" => %{ "baz" => 2 } }])
true

Validates nested objects

iex> payload = ~S/{ "foo": 1, "bar": { "baz": 2 }}/
iex> Voorhees.matches_payload?(payload, %{ :foo => 1, "bar" => %{ "baz" => 2 } })
true

Validates nested lists of objects

iex> payload = ~S/{ "foo": 1, "bar": [{ "baz": 2 }]}/
iex> Voorhees.matches_payload?(payload, %{ :foo => 1, "bar" => [%{ "baz" => 2 }] })
true

Voorhees.matches_schema?

Validating simple objects

iex> payload = ~S[{ "foo": 1, "bar": "baz" }]
iex> Voorhees.matches_schema?(payload, [:foo, "bar"]) # Property names can be strings or atoms
true

# Extra keys
iex> payload = ~S[{ "foo": 1, "bar": "baz", "boo": 3 }]
iex> Voorhees.matches_schema?(payload, [:foo, "bar"])
false

# Missing keys
iex> payload = ~S[{ "foo": 1 }]
iex> Voorhees.matches_schema?(payload, [:foo, "bar"])
false

Validating lists of objects

iex> payload = ~S/[{ "foo": 1, "bar": "baz" },{ "foo": 2, "bar": "baz" }]/
iex> Voorhees.matches_schema?(payload, [:foo, "bar"])
true

Validating nested lists of objects

iex> payload = ~S/{ "foo": 1, "bar": [{ "baz": 2 }]}/
iex> Voorhees.matches_schema?(payload, [:foo, bar: [:baz]])
true

Validating that a property is a list of scalar values

iex> payload = ~S/{ "foo": 1, "bar": ["baz", 2]}/
iex> Voorhees.matches_schema?(payload, [:foo, bar: []])
true