#560 Add node method to JsonMapAssert

Author: lukas-krecan

json-unit-assertj/src/main/java/net/javacrumbs/jsonunit/assertj/JsonMapAssert.java

@@ -32,6 +32,7 @@
 import static java.util.Objects.deepEquals;
 import static java.util.stream.Collectors.toList;
 import static net.javacrumbs.jsonunit.assertj.JsonAssertions.json;
+import static net.javacrumbs.jsonunit.core.internal.JsonUtils.getNode;
 import static net.javacrumbs.jsonunit.core.internal.JsonUtils.wrapDeserializedObject;
 import static org.assertj.core.api.Assertions.entry;
 import static org.assertj.core.error.ShouldContain.shouldContain;
@@ -57,6 +58,14 @@ public JsonMapAssert isEqualTo(@Nullable Object expected) {
         return compare(expected, configuration);
     }
 
+    /**
+     * Moves comparison to given node. Second call navigates from the last position in the JSON.
+     */
+    @NotNull
+    public JsonAssert node(@NotNull String node) {
+        return new JsonAssert(path.to(node), configuration, getNode(actual, node));
+    }
+
     @Override
     @NotNull
     public JsonMapAssert containsValue(@Nullable Object expected) {

tests/test-base/src/main/java/net/javacrumbs/jsonunit/test/base/AbstractAssertJTest.java

@@ -736,6 +736,18 @@ void shouldAssertInteger() {
         assertThatJson("{\"a\":-10}").node("a").isIntegralNumber();
     }
 
+    @Test
+    void shouldAllowNodeInJsonMapAssert() {
+        assertThatThrownBy(() ->
+            assertThatJson("{\"data\":{\"id\": \"1234\", \"relationships\": false}}")
+            .inPath("$.data")
+            .isObject()
+            .containsEntry("id", "1234")
+            .node("relationships")
+            .isObject()
+        ).hasMessage("Node \"$.data.relationships\" has invalid type, expected: <object> but was: <false>.");
+    }
+
     @Test
     void shouldAssertIntegerFailure() {
         assertThatThrownBy(() -> assertThatJson("{\"a\":1.0}").node("a").isIntegralNumber())