Assert that response body is empty list with rest-assured

Question

How can I check with rest-assured (2.4.0) if the response json is an empty list?

Given the response [] (with header content-type=application/json) I tried:

.body(Matchers.emptyArray()) // expected: an empty array, actual: []
.body("/", Matchers.emptyArray()) // invalid expression /
.body(".", Matchers.emptyArray()) // invalid expression .

If it could help, this passes the matcher : `Object array[] = new Object[0];` `new MatcherAssert().assertThat(array, Matchers.emptyArray());` — romfret, May 26 '15 at 14:15

score 47 · Accepted Answer · answered May 26 '15 at 14:09

47

The problem is (probably) that REST Assured returns a List and not an array (and Hamcrest differentiate between the two). You can do:

.body("", Matchers.hasSize(0))

or

.body("$", Matchers.hasSize(0))

or

.body("isEmpty()", Matchers.is(true))

answered May 26 '15 at 14:09

Johan

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8

Yeah that seems to be the problem. `Matchers.empty()` is the clearest way imo. – atamanroman May 26 '15 at 14:29

score 3 · Answer 2 · answered Apr 02 '20 at 10:47

3

Inspired by what @Johan said I tried this and I think it tells more to reader than other suggestions.

.body("", equalTo(Collections.emptyList()))

answered Apr 02 '20 at 10:47

kazimierz

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Assert that response body is empty list with rest-assured

2 Answers2