Add ability to check specific error on field within Spring MVC test framework [SPR-11971]

[spring-projects-issues]

Lea Farmer opened SPR-11971 and commented

It would be useful to have the ability to check that if a field has an error on it, then what that specific error is.

Currently ModelResultMatchers only has methods to assert whether an attribute has field errors.

I propose adding a new method

attributeHasFieldError(final String name, final String field, final String error)

This would allow users to assert when a specific error text/key is present.

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Referenced from: commits 85cdb91

[spring-projects-issues]

Lea Farmer commented

I have added a pull request here: #588