web/backend: use multiprocessing instead of threads; improve logging

web/backend/test/src/BackendT.jl

@@ -4,6 +4,8 @@
 
 module BackendT
 
+using Distributed
+
 using Test
 using HTTP
 using JSON
@@ -22,6 +24,7 @@ function fixture(path::String)::String
 end
 
 function runtests()
+    Backend.setup_logger()
     @testset "UCJL Backend" begin
         server_test_usage()
         jobs_test_usage()

web/backend/test/src/jobs_test.jl

@@ -7,10 +7,14 @@ using Test
 
 function jobs_test_usage()
     @testset "JobProcessor" begin
-        # Define dummy work function
-        received_job_id = []
+        # Create a temporary directory for test output
+        test_dir = mktempdir()
+
+        # Define dummy work function that writes to a file
+        # Note: This function will be executed on a worker process
         function work_fn(job_id)
-            push!(received_job_id, job_id)
+            output_file = joinpath(test_dir, job_id * ".txt")
+            write(output_file, job_id)
             return
         end
 
@@ -24,10 +28,16 @@ function jobs_test_usage()
         put!(processor, "test")
 
         # Wait for job to complete
-        sleep(0.1)
+        # Increased timeout to account for worker process startup
+        sleep(2)
         stop(processor)
 
         # Check that the work function was called with correct job_id
-        @test received_job_id[1] == "test"
+        output_file = joinpath(test_dir, "test.txt")
+        @test isfile(output_file)
+        @test read(output_file, String) == "test"
+
+        # Clean up
+        rm(test_dir; recursive = true)
     end
 end

web/backend/test/src/server_test.jl

@@ -13,7 +13,7 @@ function server_test_usage()
 
         # Submit test case
         response = HTTP.post(
-            "http://$HOST:$PORT/submit",
+            "http://$HOST:$PORT/api/submit",
             ["Content-Type" => "application/gzip"],
             compressed_data,
         )
@@ -26,7 +26,7 @@ function server_test_usage()
         @test length(job_id) == 16
 
         # Wait for jobs to finish
-        sleep(0.1)
+        sleep(5)
         while isbusy(server.processor)
             sleep(0.1)
         end
@@ -43,7 +43,7 @@ function server_test_usage()
         @test saved_data == compressed_data
 
         # Query job information
-        view_response = HTTP.get("http://$HOST:$PORT/jobs/$job_id/view")
+        view_response = HTTP.get("http://$HOST:$PORT/api/jobs/$job_id/view")
         @test view_response.status == 200
 
         # Check response