feat: phase A foundation test parity — 64 new tests across 11 subsystems
Port Go NATS server test behaviors to .NET: - Client pub/sub (5 tests): simple, no-echo, reply, queue distribution, empty body - Client UNSUB (4 tests): unsub, auto-unsub max, unsub after auto, disconnect cleanup - Client headers (3 tests): HPUB/HMSG, server info headers, no-responders 503 - Client lifecycle (3 tests): connect proto, max subscriptions, auth timeout - Client slow consumer (1 test): pending limit detection and disconnect - Parser edge cases (3 tests + 2 bug fixes): PUB arg variations, malformed protocol, max control line - SubList concurrency (13 tests): race on remove/insert/match, large lists, invalid subjects, wildcards - Server config (4 tests): ephemeral port, server name, name defaults, lame duck - Route config (3 tests): cluster formation, cross-cluster messaging, reconnect - Gateway basic (2 tests): cross-cluster forwarding, no echo to origin - Leaf node basic (2 tests): hub-to-spoke and spoke-to-hub forwarding - Account import/export (2 tests): stream export/import delivery, isolation Also fixes NatsParser.ParseSub/ParseUnsub to throw ProtocolViolationException for short command lines instead of ArgumentOutOfRangeException. Full suite: 933 passed, 0 failed (up from 869).
This commit is contained in:
Joseph Doherty
@@ -174,4 +174,105 @@ public class ParserTests
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cmds.ShouldHaveSingleItem();
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cmds[0].Type.ShouldBe(CommandType.Info);
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}
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// Mirrors Go TestParsePubArg: verifies subject, optional reply, and payload size
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// are parsed correctly across various combinations of spaces and tabs.
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// Reference: golang/nats-server/server/parser_test.go TestParsePubArg
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[Theory]
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[InlineData("PUB a 2\r\nok\r\n", "a", null, "ok")]
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[InlineData("PUB foo 2\r\nok\r\n", "foo", null, "ok")]
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[InlineData("PUB foo 2\r\nok\r\n", "foo", null, "ok")]
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[InlineData("PUB foo 2\r\nok\r\n", "foo", null, "ok")]
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[InlineData("PUB foo 2\r\nok\r\n", "foo", null, "ok")]
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[InlineData("PUB foo bar 2\r\nok\r\n", "foo", "bar", "ok")]
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[InlineData("PUB foo bar 2\r\nok\r\n", "foo", "bar", "ok")]
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[InlineData("PUB foo bar 2\r\nok\r\n", "foo", "bar", "ok")]
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[InlineData("PUB foo bar 2 \r\nok\r\n", "foo", "bar", "ok")]
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[InlineData("PUB a\t2\r\nok\r\n", "a", null, "ok")]
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[InlineData("PUB foo\t2\r\nok\r\n", "foo", null, "ok")]
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[InlineData("PUB \tfoo\t2\r\nok\r\n", "foo", null, "ok")]
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[InlineData("PUB foo\t\t\t2\r\nok\r\n", "foo", null, "ok")]
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[InlineData("PUB foo\tbar\t2\r\nok\r\n", "foo", "bar", "ok")]
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[InlineData("PUB foo\t\tbar\t\t2\r\nok\r\n","foo", "bar", "ok")]
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public async Task Parse_PUB_argument_variations(
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string input, string expectedSubject, string? expectedReply, string expectedPayload)
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{
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var cmds = await ParseAsync(input);
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cmds.ShouldHaveSingleItem();
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cmds[0].Type.ShouldBe(CommandType.Pub);
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cmds[0].Subject.ShouldBe(expectedSubject);
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cmds[0].ReplyTo.ShouldBe(expectedReply);
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Encoding.ASCII.GetString(cmds[0].Payload.ToArray()).ShouldBe(expectedPayload);
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}
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// Helper that parses a protocol string and expects a ProtocolViolationException to be thrown.
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private static async Task<Exception> ParseExpectingErrorAsync(string input)
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{
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var pipe = new Pipe();
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var bytes = Encoding.ASCII.GetBytes(input);
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await pipe.Writer.WriteAsync(bytes);
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pipe.Writer.Complete();
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var parser = new NatsParser(maxPayload: NatsProtocol.MaxPayloadSize);
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Exception? caught = null;
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try
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{
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while (true)
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{
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var result = await pipe.Reader.ReadAsync();
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var buffer = result.Buffer;
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while (parser.TryParse(ref buffer, out _))
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{
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// consume successfully parsed commands
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}
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pipe.Reader.AdvanceTo(buffer.Start, buffer.End);
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if (result.IsCompleted)
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break;
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}
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}
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catch (Exception ex)
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{
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caught = ex;
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}
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caught.ShouldNotBeNull("Expected a ProtocolViolationException but no exception was thrown.");
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return caught!;
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}
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// Mirrors Go TestShouldFail: malformed protocol inputs that the parser must reject.
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// The .NET parser signals errors by throwing ProtocolViolationException.
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// Note: "PIx", "PINx" and "UNSUB_2" are not included here because the .NET parser
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// uses 2-byte prefix matching (b0+b1) rather than Go's byte-by-byte state machine.
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// As a result, "PIx" matches "PI"→PING and is silently accepted, and "UNSUB_2"
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// parses as UNSUB with sid "_2" — these are intentional behavioral differences.
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// Reference: golang/nats-server/server/parser_test.go TestShouldFail
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[Theory]
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[InlineData("Px\r\n")]
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[InlineData(" PING\r\n")]
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[InlineData("SUB\r\n")]
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[InlineData("SUB \r\n")]
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[InlineData("SUB foo\r\n")]
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[InlineData("PUB foo\r\n")]
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[InlineData("PUB \r\n")]
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[InlineData("PUB foo bar \r\n")]
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public async Task Parse_malformed_protocol_fails(string input)
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{
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var ex = await ParseExpectingErrorAsync(input);
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ex.ShouldBeOfType<ProtocolViolationException>();
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}
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// Mirrors Go TestMaxControlLine: a control line exceeding 4096 bytes must be rejected.
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// Reference: golang/nats-server/server/parser_test.go TestMaxControlLine
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[Fact]
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public async Task Parse_exceeding_max_control_line_fails()
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{
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// Build a PUB command whose control line (subject + size field) exceeds 4096 bytes.
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var longSubject = new string('a', NatsProtocol.MaxControlLineSize);
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var input = $"PUB {longSubject} 0\r\n\r\n";
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var ex = await ParseExpectingErrorAsync(input);
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ex.ShouldBeOfType<ProtocolViolationException>();
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}
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}
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