allow running tests in any random subdirectory, not just linalg

test/Makefile

@@ -4,8 +4,13 @@ BUILDDIR := .
 include $(JULIAHOME)/Make.inc
 # TODO: this Makefile ignores BUILDDIR, except for computing JULIA_EXECUTABLE
 
-TESTS = all linalg sparse unicode strings dates \
-		$(filter-out TestHelpers runtests testdefs,$(patsubst $(SRCDIR)/%.jl,%,$(wildcard $(SRCDIR)/*.jl $(SRCDIR)/*/*.jl)))
+TESTGROUPS = linalg sparse unicode strings dates
+TESTS = all $(TESTGROUPS) \
+		$(filter-out TestHelpers runtests testdefs, \
+			$(patsubst $(SRCDIR)/%.jl,%,$(wildcard $(SRCDIR)/*.jl))) \
+		$(foreach group,$(TESTGROUPS), \
+			$(patsubst $(SRCDIR)/%.jl,%,$(wildcard $(SRCDIR)/$(group)/*.jl)))
+# run `make print-TESTS` to see a list of all tests that can be run
 
 default: all