-TestSourceExt: ${trace_dir}/aaa1, ${trace_dir}/aaa2, ${trace_dir}/aaa3
-TestSourceExt: ${trace_dir}/bbb1, ${trace_dir}/bbb2
-TestSourceExt: ${trace_dir}/ccc1
-TestSourceExt: ${trace_dir}/ccc2
-TestSourceExt: ${trace_dir}/ccc3
-TestSourceExt: ${trace_dir}/ccc4
-TestSourceSomeDir: ${trace_dir}/some-dir
+TestSourceExt: ${trace_dir}${dir_sep}aaa1, ${trace_dir}${dir_sep}aaa2, ${trace_dir}${dir_sep}aaa3
+TestSourceExt: ${trace_dir}${dir_sep}bbb1, ${trace_dir}${dir_sep}bbb2
+TestSourceExt: ${trace_dir}${dir_sep}ccc1
+TestSourceExt: ${trace_dir}${dir_sep}ccc2
+TestSourceExt: ${trace_dir}${dir_sep}ccc3
+TestSourceExt: ${trace_dir}${dir_sep}ccc4
+TestSourceSomeDir: ${trace_dir}${dir_sep}some-dir