public void ObjectDepth()
{
string json = "{ \"foo\": { \"x\": 1, \"y\": [ 0 ] } }";
var tokenizer = JsonTokenizer.FromTextReader(new StringReader(json));
// If we had more tests like this, I'd introduce a helper method... but for one test, it's not worth it.
Assert.AreEqual(0, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.StartObject, tokenizer.Next());
Assert.AreEqual(1, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.Name("foo"), tokenizer.Next());
Assert.AreEqual(1, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.StartObject, tokenizer.Next());
Assert.AreEqual(2, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.Name("x"), tokenizer.Next());
Assert.AreEqual(2, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.Value(1), tokenizer.Next());
Assert.AreEqual(2, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.Name("y"), tokenizer.Next());
Assert.AreEqual(2, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.StartArray, tokenizer.Next());
Assert.AreEqual(2, tokenizer.ObjectDepth); // Depth hasn't changed in array
Assert.AreEqual(JsonToken.Value(0), tokenizer.Next());
Assert.AreEqual(2, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.EndArray, tokenizer.Next());
Assert.AreEqual(2, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.EndObject, tokenizer.Next());
Assert.AreEqual(1, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.EndObject, tokenizer.Next());
Assert.AreEqual(0, tokenizer.ObjectDepth);
Assert.AreEqual(JsonToken.EndDocument, tokenizer.Next());
Assert.AreEqual(0, tokenizer.ObjectDepth);
}
public void NextAfterEndDocumentThrows()
{
var tokenizer = JsonTokenizer.FromTextReader(new StringReader("null"));
Assert.AreEqual(JsonToken.Null, tokenizer.Next());
Assert.AreEqual(JsonToken.EndDocument, tokenizer.Next());
Assert.Throws <InvalidOperationException>(() => tokenizer.Next());
}
public void SkipValue(string json)
{
var tokenizer = JsonTokenizer.FromTextReader(new StringReader(json.Replace('\'', '"')));
Assert.AreEqual(JsonToken.StartObject, tokenizer.Next());
Assert.AreEqual("skip", tokenizer.Next().StringValue);
tokenizer.SkipValue();
Assert.AreEqual("next", tokenizer.Next().StringValue);
}
/// <summary>
/// Parses JSON read from <paramref name="jsonReader"/> and merges the information into the given message.
/// </summary>
/// <param name="message">The message to merge the JSON information into.</param>
/// <param name="jsonReader">Reader providing the JSON to parse.</param>
internal void Merge(IMessage message, TextReader jsonReader)
{
var tokenizer = JsonTokenizer.FromTextReader(jsonReader);
Merge(message, tokenizer);
var lastToken = tokenizer.Next();
if (lastToken != JsonToken.EndDocument)
{
throw new InvalidProtocolBufferException("Expected end of JSON after object");
}
}
public void InvalidStructure(string json, int expectedValidTokens)
{
// Note: we don't test that the earlier tokens are exactly as expected,
// partly because that's hard to parameterize.
var reader = new StringReader(json.Replace('\'', '"'));
var tokenizer = JsonTokenizer.FromTextReader(reader);
for (int i = 0; i < expectedValidTokens; i++)
{
Assert.IsNotNull(tokenizer.Next());
}
Assert.Throws <InvalidJsonException>(() => tokenizer.Next());
}
private static void AssertThrowsAfter(string json, params JsonToken[] expectedTokens)
{
var reader = new StringReader(json);
var tokenizer = JsonTokenizer.FromTextReader(reader);
for (int i = 0; i < expectedTokens.Length; i++)
{
var actualToken = tokenizer.Next();
if (actualToken == JsonToken.EndDocument)
{
Assert.Fail("Expected {0} but reached end of document", expectedTokens[i]);
}
Assert.AreEqual(expectedTokens[i], actualToken);
}
Assert.Throws <InvalidJsonException>(() => tokenizer.Next());
}
/// <summary>
/// Asserts that the specified JSON is tokenized into the given sequence of tokens.
/// Unlike <see cref="AssertTokens(string, JsonToken[])"/>, this does not perform any character
/// replacement on the specified JSON, and should be used when the text contains apostrophes which
/// are expected to be used *as* apostrophes. The "end document" token is not specified in the list of
/// expected tokens, but is implicit.
/// </summary>
private static void AssertTokensNoReplacement(string json, params JsonToken[] expectedTokens)
{
var reader = new StringReader(json);
var tokenizer = JsonTokenizer.FromTextReader(reader);
for (int i = 0; i < expectedTokens.Length; i++)
{
var actualToken = tokenizer.Next();
if (actualToken == JsonToken.EndDocument)
{
Assert.Fail("Expected {0} but reached end of token stream", expectedTokens[i]);
}
Assert.AreEqual(expectedTokens[i], actualToken);
}
var finalToken = tokenizer.Next();
if (finalToken != JsonToken.EndDocument)
{
Assert.Fail("Expected token stream to be exhausted; received {0}", finalToken);
}
}
public void ObjectDepth_WithPushBack()
{
string json = "{}";
var tokenizer = JsonTokenizer.FromTextReader(new StringReader(json));
Assert.AreEqual(0, tokenizer.ObjectDepth);
var token = tokenizer.Next();
Assert.AreEqual(1, tokenizer.ObjectDepth);
// When we push back a "start object", we should effectively be back to the previous depth.
tokenizer.PushBack(token);
Assert.AreEqual(0, tokenizer.ObjectDepth);
// Read the same token again, and get back to depth 1
token = tokenizer.Next();
Assert.AreEqual(1, tokenizer.ObjectDepth);
// Now the same in reverse, with EndObject
token = tokenizer.Next();
Assert.AreEqual(0, tokenizer.ObjectDepth);
tokenizer.PushBack(token);
Assert.AreEqual(1, tokenizer.ObjectDepth);
tokenizer.Next();
Assert.AreEqual(0, tokenizer.ObjectDepth);
}
