Run more tests in isolation (#424)

Author: timholy

test/breakpoints.jl

@@ -20,7 +20,7 @@ end
 close(io)
 include(tmppath)
 
-using JuliaInterpreter, Test
+using JuliaInterpreter, CodeTracking, Test
 
 function stacklength(frame)
     n = 1

test/interpret.jl

@@ -4,6 +4,10 @@ using Test, InteractiveUtils, CodeTracking
 using Mmap
 using LinearAlgebra
 
+if !isdefined(@__MODULE__, :runframe)
+    include("utils.jl")
+end
+
 module Isolated end
 
 function summer(A)

test/limits.jl

@@ -1,5 +1,7 @@
 # This is a test-for-tests, verifying the code in utils.jl.
-using Test
+if !isdefined(@__MODULE__, :read_and_parse)
+    include("utils.jl")
+end
 
 @testset "Abort" begin
     ex = Base.parse_input_line("""

test/toplevel.jl

@@ -1,4 +1,6 @@
-using JuliaInterpreter, Test, Random
+if !isdefined(@__MODULE__, :read_and_parse)
+    include("utils.jl")
+end
 
 module JIVisible
 module JIInvisible