Use curl and ssh from Yggdrasil in the tests

This makes them slightly more portable, though we still need to lose the
dependency on sshpass to make them truly portable.

test/LibSSHTests.jl

@@ -6,8 +6,8 @@ import Sockets
 
 import Aqua
 import Literate
-import Documenter
-import Documenter: DocMeta
+import CURL_jll: curl
+import OpenSSH_jll
 import ReTest: @testset, @test, @test_throws, @test_nowarn, @test_logs
 
 import LibSSH
@@ -83,8 +83,12 @@ end
         @test server.ptr == nothing
     end
 
-    # Helper function to set up an `ssh` command
-    ssh_cmd(cmd::Cmd) = ignorestatus(`sshpass -p bar ssh -o NoHostAuthenticationForLocalhost=yes $cmd`)
+    # Helper function to set up an `ssh` command. Slightly ugly workaround to
+    # set the necessary environment variables comes from:
+    # https://github.com/JuliaLang/julia/issues/39282
+    # Also note that we set `-F none` to disabling reading user config files.
+    openssh_cmd = OpenSSH_jll.ssh()
+    ssh_cmd(cmd::Cmd) = ignorestatus(Cmd(`sshpass -p bar $(openssh_cmd.exec) -F none -o NoHostAuthenticationForLocalhost=yes $cmd`; env=openssh_cmd.env))
 
     @testset "Password authentication and session channels" begin
         # More complicated test, where we run a command and check the output
@@ -118,7 +122,7 @@ end
     @testset "Direct port forwarding" begin
         # Test the dummy HTTP server we'll use later
         http_server(9090) do
-            @test run(`curl localhost:9090`).exitcode == 0
+            @test run(`$(curl()) localhost:9090`).exitcode == 0
         end
 
         # Test direct port forwarding
@@ -139,7 +143,7 @@ end
                 # on the listening port, so we only need the HTTP server running
                 # while we're making the request.
                 http_server(9090) do
-                    curl_process = run(ignorestatus(`curl localhost:8080`))
+                    curl_process = run(ignorestatus(`$(curl()) localhost:8080`))
                     @test curl_process.exitcode == 0
                 end
 
@@ -319,7 +323,7 @@ end
         demo_server_with_session(2222) do session
             ssh.Forwarder(session, 8080, "localhost", 9090) do forwarder
                 http_server(9090) do
-                    curl_proc = run(ignorestatus(`curl localhost:8080`); wait=false)
+                    curl_proc = run(ignorestatus(`$(curl()) localhost:8080`); wait=false)
                     try
                         wait(curl_proc)
                     finally

test/Project.toml

@@ -1,6 +1,8 @@
 [deps]
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
+CURL_jll = "b21e61f3-bafc-59ac-ab14-4c5c62d6588d"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 Literate = "98b081ad-f1c9-55d3-8b20-4c87d4299306"
+OpenSSH_jll = "9bd350c2-7e96-507f-8002-3f2e150b4e1b"
 ReTest = "e0db7c4e-2690-44b9-bad6-7687da720f89"
 Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"