Make the Distributed detection tests handle precompilation logs

Author: JamesWrigley

test/distributed_stdlib_detection.jl

@@ -5,18 +5,20 @@
         return String(take!(stderr_buf))
     end
 
+    warning_msg = "DistributedNext has detected that the Distributed stdlib may be in use"
+
     # Just loading Distributed should do nothing
     cmd = `$test_exename $test_exeflags -e 'using Distributed, DistributedNext; @assert !DistributedNext._check_distributed_active()'`
-    @test isempty(get_stderr(cmd))
+    @test !contains(get_stderr(cmd), warning_msg)
 
     # Only one of the two being active should also do nothing
     cmd = `$test_exename $test_exeflags -e 'using Distributed, DistributedNext; Distributed.init_multi(); @assert !DistributedNext._check_distributed_active()'`
-    @test isempty(get_stderr(cmd))
+    @test !contains(get_stderr(cmd), warning_msg)
 
     cmd = `$test_exename $test_exeflags -e 'using Distributed, DistributedNext; DistributedNext.init_multi(); @assert !DistributedNext._check_distributed_active()'`
-    @test isempty(get_stderr(cmd))
+    @test !contains(get_stderr(cmd), warning_msg)
 
     # But both being active at the same time should trigger a warning
     cmd = `$test_exename $test_exeflags -e 'using Distributed, DistributedNext; Distributed.init_multi(); DistributedNext.init_multi(); @assert DistributedNext._check_distributed_active()'`
-    @test contains(get_stderr(cmd), "DistributedNext has detected that the Distributed stdlib may be in use")
+    @test contains(get_stderr(cmd), warning_msg)
 end