Consider adding JsonPath support for JsonNode

[vbsteven]

Currently when asserting deeply nested JSON documents you have to chain path() methods to get to the leaf nodes. This can become very noisy:

expectThat(jsonNode) {
    path("_links").path("self").path("href")
        .textValue().isEqualTo("http://xxx")
}

A potential solution for this could be to integrate the JsonPath library (based on Jackson) to get something like this:

expectThat(jsonNode) {
    jsonPath("$_links.self.href")
        .textValue().isEqualTo("http://xxx")
}

I might have time later this week to try out a PoC for this.

[robfletcher]

Sounds good

[robfletcher]

Not JSON Path exactly but I've added at methods using Jackson's JSON Pointer support in 2355364. Your example above would be:

expectThat(jsonNode)
  .at("/_links/self/href")
  .textValue()
  .isEqualTo("http://xxx")