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jsonscalaspecs2

How to match a top level array in json with specs2


In specs2 you can match an array for elements like this:

val json = """{"products":[{"name":"shirt","price":10, "ids":["1", "2", "3"]},{"name":"shoe","price":5}]}"""

def aProductWith(name: Matcher[JsonType],  price: Matcher[JsonType]): Matcher[String] =
  /("name").andHave(name) and /("price").andHave(price)

def haveProducts(products: Matcher[String]*): Matcher[String] =
  /("products").andHave(allOf(products:_*))

json must haveProducts(
  aProductWith(name = "shirt", price = 10) and /("ids").andHave(exactly("1", "2", "3")),
  aProductWith(name = "shoe", price = 5)
)

(Example taken from here: http://etorreborre.github.io/specs2/guide/SPECS2-3.0/org.specs2.guide.Matchers.html)

How do I do the same thing i.e. match the contents of products if products is a root element in the json? What should haveProducts look like?

val json = """[{"name":"shirt","price":10, "ids":["1", "2", "3"]},{"name":"shoe","price":5}]"""

Solution

  • You can replace /("products").andHave(allOf(products:_*)) with have(allOf(products:_*)) like this:

    val json = """[{"name":"shirt","price":10, "ids":["1", "2", "3"]},{"name":"shoe","price":5}]"""
    
    def aProductWith(name: Matcher[JsonType],  price: Matcher[JsonType]): Matcher[String] =
      /("name").andHave(name) and /("price").andHave(price)
    
    def haveProducts(products: Matcher[String]*): Matcher[String] = have(allOf(products:_*))
    
    json must haveProducts(
      aProductWith(name = "shirt", price = 10) and /("ids").andHave(exactly("1", "2", "3")),
      aProductWith(name = "shoe", price = 5)
    )