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Support target type in JsonPath assertions

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This change adds support for a target type in JsonPath assertions in
Spring MVC Test.

The existing assertValue(String expression, Object expectedValue)
transparently falls back on using an alternative JsonPath API that
allows specifying the target type to coerce to.

There is also a new overloaded method
assertValue(String expression, Matcher<T> matcher, Class<T> targetType)
for use with Hamcrest matchers where the target type can be specified.

Issue: SPR-14498
This commit is contained in:
Rossen Stoyanchev
2016-08-26 10:33:41 -04:00
parent d8fc13f6fc
commit 7fdb892042
3 changed files with 59 additions and 12 deletions
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17
spring-test/src/test/java/org/springframework/test/util/JsonPathExpectationsHelperTests.java
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@@ -1,5 +1,5 @@
/*
* Copyright 2004-2015 the original author or authors.
* Copyright 2004-2016 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@ import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.hamcrest.CoreMatchers.*;
import static org.hamcrest.core.Is.is;
/**
* Unit tests for {@link JsonPathExpectationsHelper}.
@@ -222,11 +222,14 @@ public class JsonPathExpectationsHelperTests {
new JsonPathExpectationsHelper("$.num").assertValue(CONTENT, 5);
}
@Test
public void assertValueWithDifferentExpectedType() throws Exception {
exception.expect(AssertionError.class);
exception.expectMessage(equalTo("At JSON path \"$.num\", type of value expected:<java.lang.String> but was:<java.lang.Integer>"));
new JsonPathExpectationsHelper("$.num").assertValue(CONTENT, "5");
@Test // SPR-14498
public void assertValueWithNumberConversion() throws Exception {
new JsonPathExpectationsHelper("$.num").assertValue(CONTENT, 5.0);
}
@Test // SPR-14498
public void assertValueWithNumberConversionAndMatcher() throws Exception {
new JsonPathExpectationsHelper("$.num").assertValue(CONTENT, is(5.0), Double.class);
}
@Test