Print available memory before tests as part of debug stats

Author: christiangnrd

src/ParallelTestRunner.jl

@@ -832,6 +832,7 @@ function runtests(mod::Module, args::ParsedArgs;
     jobs = something(args.jobs, default_njobs())
     jobs = clamp(jobs, 1, length(tests))
     println(stdout, "Running $jobs tests in parallel. If this is too many, specify the `--jobs=N` argument to the tests, or set the `JULIA_CPU_THREADS` environment variable.")
+    !isnothing(args.debug_stats) && println(stdout, "Available memory: $(Base.format_bytes(available_memory()))")
     workers = fill(nothing, jobs)
 
     t0 = time()

test/runtests.jl

@@ -30,12 +30,15 @@ end
     runtests(ParallelTestRunner, ["--debug-stats"]; stdout=io_color, stderr=io_color)
     str = String(take!(io))
 
-    @test contains(str, "time (s)") # timing
+    @test contains(str, "time (s)")
 
-    @test contains(str, "Init") # debug timing
-    if VERSION >= v"1.11" # compile time as part of the struct not available before 1.11
-        @test contains(str, "Compile") # debug timing
-        @test contains(str, "(%)") # debug timing
+    @test contains(str, "Available memory:")
+    @test contains(str, "Init")
+
+     # compile time as part of the struct not available before 1.11
+    if VERSION >= v"1.11"
+        @test contains(str, "Compile")
+        @test contains(str, "(%)")
     end
 end