runtests: eval testsets in a loop rather than all in one block

This is quite faster. Also, this shows the result of testsets
as soon as they are compiled, rather than having to wait for
everything to be compiled before starting to print.

Author: rfourquet

src/InlineTest.jl

@@ -76,16 +76,20 @@ in which it was written (e.g. `m`, when specified).
 """
 function runtests(m::Module, regex::Regex = r""; wrap::Bool=false)
     partial = partialize(regex)
-    ex = Expr(:let,
-              Expr(:(=), Testset.REGEX[], (partial, regex)),
-              Expr(:block, tests(m)...))
-
     if wrap
-        ex = :(InlineTest.Test.@testset $("Tests for module $m") begin
-               $ex
-               end)
+        Core.eval(m, :(InlineTest.Test.@testset $("Tests for module $m") begin
+                           let $(Testset.REGEX[]) = ($partial, $regex)
+                               $(tests(m)...)
+                           end
+                       end))
+    else
+        for ts in tests(m)
+            # it's faster to evel in a loop than to eval a block containing tests(m)
+            Core.eval(m, :(let $(Testset.REGEX[]) = ($partial, $regex)
+                               $ts
+                           end))
+        end
     end
-    Core.eval(m, ex)
     nothing
 end