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Produce debug output when tests fail #116

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Merged
Keno merged 2 commits into from
Aug 2, 2025
Merged

Produce debug output when tests fail #116

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68d46bd
Produce debug output when tests fail
eschnett Jul 29, 2025
0476ddb
Simplify code
eschnett Jul 29, 2025
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42 changes: 38 additions & 4 deletions test/ssl.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,24 @@ function curl_write_cb(curlbuf::Ptr{Cvoid}, s::Csize_t, n::Csize_t, p_ctxt::Ptr{
return sz::Csize_t
end

# Setup the callback function to collect debug information
const infotype_str = Dict(
0 => "CURLINFO_TEXT",
1 => "CURLINFO_HEADER_IN",
2 => "CURLINFO_HEADER_OUT",
3 => "CURLINFO_DATA_IN",
4 => "CURLINFO_DATA_OUT",
5 => "CURLINFO_SSL_DATA_IN",
6 => "CURLINFO_SSL_DATA_OUT",
)

function curl_debug_cb(handle::Ptr{Cvoid}, type::Cint, data::Ptr{Cvoid}, sz::Csize_t, clientp::Ptr{Cvoid})
debug_buffer = unsafe_pointer_to_objref(clientp)::IOBuffer
data = UInt8[unsafe_load(reinterpret(Ptr{Cuchar}, data), n) for n in 1:sz]
println(debug_buffer, "$(infotype_str[type]) \"$(String(data))\"")
return Cint(0)
end

@testset "SSL verify" begin
# Set up the write function to consume the curl output so we don't see it in the
# test output
Expand All @@ -27,11 +45,27 @@ end
curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1)
curl_easy_setopt(curl, CURLOPT_CAINFO, LibCURL.cacert)

@testset "SSL Success" begin
res = curl_easy_perform(curl)
@test res == CURLE_OK
end
# For debugging -- we see that `res ≠ CURLE_OK` below and want to know why
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1)
c_curl_debug_cb = @cfunction(
curl_debug_cb,
Cint,
(Ptr{Cvoid}, Cint, Ptr{Cvoid}, Csize_t, Ptr{Cvoid})
)
debug_buffer = IOBuffer()
GC.@preserve debug_buffer begin
curl_easy_setopt(curl, CURLOPT_DEBUGFUNCTION, c_curl_debug_cb)
curl_easy_setopt(curl, CURLOPT_DEBUGDATA, pointer_from_objref(debug_buffer))

@testset "SSL Success" begin
res = curl_easy_perform(curl)
if !(res == CURLE_OK)
println("CURL debug output:\n")
print(takestring!(debug_buffer))
end
@test res == CURLE_OK
end
end
end

curl_easy_cleanup(curl)
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