--- /dev/null
+config.name = 'top-level-suite'
+config.suffixes = ['.txt']
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
--- /dev/null
+config.name = 'sub-suite'
+config.suffixes = ['.txt']
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
--- /dev/null
+# Check the basic discovery process, including a sub-suite.
+#
+# RUN: %{lit} %{inputs}/discovery \
+# RUN: -j 1 --debug --no-execute --show-suites -v > %t.out 2> %t.err
+# RUN: FileCheck --check-prefix=CHECK-BASIC-OUT < %t.out %s
+# RUN: FileCheck --check-prefix=CHECK-BASIC-ERR < %t.err %s
+#
+# CHECK-BASIC-ERR: loading suite config '{{.*}}/tests/Inputs/discovery/lit.cfg'
+# CHECK-BASIC-ERR: loading local config '{{.*}}/tests/Inputs/discovery/subdir/lit.local.cfg'
+# CHECK-BASIC-ERR: loading suite config '{{.*}}/tests/Inputs/discovery/subsuite/lit.cfg'
+#
+# CHECK-BASIC-OUT: -- Test Suites --
+# CHECK-BASIC-OUT: sub-suite - 2 tests
+# CHECK-BASIC-OUT: Source Root:
+# CHECK-BASIC-OUT: Exec Root :
+# CHECK-BASIC-OUT: top-level-suite - 3 tests
+# CHECK-BASIC-OUT: Source Root:
+# CHECK-BASIC-OUT: Exec Root :
+#
+# CHECK-BASIC-OUT: -- Testing: 5 tests, 1 threads --
+# CHECK-BASIC-OUT: PASS: sub-suite :: test-one
+# CHECK-BASIC-OUT: PASS: sub-suite :: test-two
+# CHECK-BASIC-OUT: PASS: top-level-suite :: subdir/test-three
+# CHECK-BASIC-OUT: PASS: top-level-suite :: test-one
+# CHECK-BASIC-OUT: PASS: top-level-suite :: test-two