TAP version 14
# Subtest: send trailers when payload is empty string
    1..5
    ok 1 - should not error
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - all provided fields should not be equivalent
ok 1 - send trailers when payload is empty string # time=23.162ms

# Subtest: send trailers when payload is empty buffer
    1..5
    ok 1 - should not error
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - all provided fields should not be equivalent
ok 2 - send trailers when payload is empty buffer # time=2.219ms

# Subtest: send trailers when payload is undefined
    1..5
    ok 1 - should not error
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - all provided fields should not be equivalent
ok 3 - send trailers when payload is undefined # time=1.635ms

# Subtest: send trailers when payload is json
    1..7
    ok 1 - should be equal
    ok 2 - should not error
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - should be equal
    ok 6 - should be equal
    ok 7 - all provided fields should not be equivalent
ok 4 - send trailers when payload is json # time=14.877ms

# Subtest: send trailers when payload is stream
    1..7
    ok 1 - should be equivalent
    ok 2 - should not error
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - should be equal
    ok 6 - should be equal
    ok 7 - all provided fields should not be equivalent
ok 5 - send trailers when payload is stream # time=14.122ms

# Subtest: send trailers when using async-await
    1..5
    ok 1 - should not error
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - all provided fields should not be equivalent
ok 6 - send trailers when using async-await # time=2.074ms

# Subtest: error in trailers should be ignored
    1..5
    ok 1 - should not error
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - all provided fields should not be equivalent
    ok 5 - all provided fields should not be equivalent
ok 7 - error in trailers should be ignored # time=1.706ms

# Subtest: should emit deprecation warning when using direct return
    1..7
    ok 1 - should be equal
    ok 2 - should be equal
    ok 3 - should not error
    ok 4 - should be equal
    ok 5 - should be equal
    ok 6 - should be equal
    ok 7 - all provided fields should not be equivalent
ok 8 - should emit deprecation warning when using direct return # time=2.915ms

# Subtest: trailer handler counter
    1..2
    # Subtest: callback with timeout
        1..9
        ok 1 - should be equal
        ok 2 - should be equal
        ok 3 - should not error
        ok 4 - should be equal
        ok 5 - should be equal
        ok 6 - should be equal
        ok 7 - should be equal
        ok 8 - should be equal
        ok 9 - all provided fields should not be equivalent
    ok 1 - callback with timeout # time=503.487ms
    
    # Subtest: async-await
        1..9
        ok 1 - should be equal
        ok 2 - should be equal
        ok 3 - should not error
        ok 4 - should be equal
        ok 5 - should be equal
        ok 6 - should be equal
        ok 7 - should be equal
        ok 8 - should be equal
        ok 9 - all provided fields should not be equivalent
    ok 2 - async-await # time=503.088ms
    
ok 9 - trailer handler counter # time=1016.298ms

# Subtest: removeTrailer
    1..6
    ok 1 - should not error
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - should be equal
    ok 6 - all provided fields should not be equivalent
ok 10 - removeTrailer # time=1.772ms

# Subtest: remove all trailers
    1..6
    ok 1 - should not error
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - should be equal
    ok 6 - all provided fields should not be equivalent
ok 11 - remove all trailers # time=1.641ms

# Subtest: hasTrailer
    1..10
    ok 1 - should be equal
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - should not error
    ok 6 - should be equal
    ok 7 - should be equal
    ok 8 - should be equal
    ok 9 - should be equal
    ok 10 - all provided fields should not be equivalent
ok 12 - hasTrailer # time=1.549ms

# Subtest: throw error when trailer header name is not allowed
    1..14
    ok 1 - should be equal
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - should be equal
    ok 6 - should be equal
    ok 7 - should be equal
    ok 8 - should be equal
    ok 9 - should be equal
    ok 10 - should be equal
    ok 11 - should be equal
    ok 12 - should be equal
    ok 13 - should not error
    ok 14 - should be equal
ok 13 - throw error when trailer header name is not allowed # time=2.783ms

# Subtest: throw error when trailer header value is not function
    1..10
    ok 1 - should be equal
    ok 2 - should be equal
    ok 3 - should be equal
    ok 4 - should be equal
    ok 5 - should be equal
    ok 6 - should be equal
    ok 7 - should be equal
    ok 8 - should be equal
    ok 9 - should not error
    ok 10 - should be equal
ok 14 - throw error when trailer header value is not function # time=6.415ms

1..14