[Jean-Beru]

Replaces #33 by @jdeniau. It keeps the original commit and applies the review.

Why

When the JSON node :node should contain :text fails, the message does not show the node or its value. This makes the failure hard to debug. The should not contain step has the same problem.

What

• theJsonNodeShouldContain and theJsonNodeShouldNotContain show the node, the expected text and the full node value.
• The value is not truncated.
• Unit tests cover both steps, with the single and the table variants.

Example

  And the JSON node "hydra:description" should contain "coucou"
-   The string 'coucou' was not found.
+   The node 'hydra:description' should contain 'coucou', but it is 'This value should be equal to 1.'.

  And the JSON node "hydra:description" should not contain "ipsum"
-   The string 'ipsum' was found.
+   The node 'hydra:description' should not contain 'ipsum', but it is 'Lorem ipsum'.

[Jean-Beru]

Thanks @jdeniau !