Fixup: Add a regression test

Author: bjope

llvm/utils/lit/tests/Inputs/shtest-env-path/lit.cfg

@@ -0,0 +1,8 @@
+import lit.formats
+
+config.name = "shtest-env-path"
+config.suffixes = [".txt"]
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
+config.substitutions.append(("%{python}", '"%s"' % (sys.executable)))

llvm/utils/lit/tests/Inputs/shtest-env-path/path.txt

@@ -0,0 +1,8 @@
+## Tests env command for setting the PATH variable.
+
+## Check that test.sh can be found using the configured PATH.
+#
+# RUN: env PATH=%S test.sh | FileCheck --check-prefix=CHECK %s
+#
+
+# CHECK: TEST-ENV-PATH-123

llvm/utils/lit/tests/Inputs/shtest-env-path/test.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo "TEST-ENV-PATH-123"
+

llvm/utils/lit/tests/shtest-env-path.py

@@ -0,0 +1,13 @@
+## Tests env command for setting the PATH variable.
+
+# The test is using /bin/sh. Limit to system known to have /bin/sh.
+# REQUIRED: system-linux
+
+# RUN: %{lit} -a -v %{inputs}/shtest-env-path/path.txt \
+# RUN:   | FileCheck -match-full-lines %s
+#
+# END.
+
+# CHECK: -- Testing: 1 tests{{.*}}
+# CHECK: PASS: shtest-env-path :: path.txt (1 of 1)
+# CHECK: --