SUPPRESS_EXCEPTIONS GsonMappingProvider throws AssertionError

[ianhattendorf]

java.lang.AssertionError
	at com.google.gson.internal.bind.JsonTreeReader.peek(JsonTreeReader.java:145)
	at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:409)
	at com.google.gson.internal.bind.TypeAdapters$16.read(TypeAdapters.java:406)
	at com.google.gson.TypeAdapter.fromJsonTree(TypeAdapter.java:285)
	at com.jayway.jsonpath.spi.mapper.GsonMappingProvider.map(GsonMappingProvider.java:66)
	at com.jayway.jsonpath.internal.JsonContext.convert(JsonContext.java:192)
	at com.jayway.jsonpath.internal.JsonContext.read(JsonContext.java:158)
	at com.ianhattendorf.xxx.xxx.xxx(xxx.java:155)
	at com.ianhattendorf.xxx.xxx.xxx(xxx.java:138)
	at com.ianhattendorf.xxx.xxx.xxx(xxx.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

I'm setting the configuration like so:

    static {
        Configuration.setDefaults(new Configuration.Defaults() {
            private final JsonProvider jsonProvider = new GsonJsonProvider(new Gson());
            private final MappingProvider mappingProvider = new GsonMappingProvider(new Gson());

            @Override
            public JsonProvider jsonProvider() {
                return jsonProvider;
            }

            @Override
            public Set<Option> options() {
                return EnumSet.of(Option.DEFAULT_PATH_LEAF_TO_NULL, Option.SUPPRESS_EXCEPTIONS);
            }

            @Override
            public MappingProvider mappingProvider() {
                return mappingProvider;
            }
        });
    }

Parsing:

String value = JsonPath.parse("{\"M\":[]}").read("$.M[0].A[0]", String.class); // throws AssertionError here

No assertion is thrown if instead I parse as follows (removing the Class parameter):

String value = JsonPath.parse("{\"M\":[]}").read("$.M[0].A[0]");

however when there IS something there and I leave out the Class parameter:

String value = JsonPath.parse("{\"M\":\"asdf\"}").read("$.M");

I get a ClassCastException:

java.lang.ClassCastException: com.google.gson.JsonPrimitive cannot be cast to java.lang.String

	at com.ianhattendorf.xxx.xxx.xxx(xxx.java:156)
	at com.ianhattendorf.xxx.xxx.xxx(xxx.java:139)
	at com.ianhattendorf.xxx.xxx.xxx(xxx.java:23)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)