Vendor import of llvm trunk r178860:

http://llvm.org/svn/llvm-project/llvm/trunk@178860

43 files changed, 319 insertions, 0 deletions

diff --git a/utils/lit/tests/.coveragerc b/utils/lit/tests/.coveragerc
new file mode 100644
index 0000000..c886d0a
--- /dev/null
+++ b/utils/lit/tests/.coveragerc
@@ -0,0 +1,11 @@
+# .coveragerc to control coverage.py
+[run]
+branch = False
+parallel = True
+source = lit
+
+[html]
+directory = coverage_html_report
+
+[report]
+omit = Inputs
diff --git a/utils/lit/tests/Inputs/discovery/lit.cfg b/utils/lit/tests/Inputs/discovery/lit.cfg
new file mode 100644
index 0000000..3513bff
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/lit.cfg
@@ -0,0 +1,5 @@
+config.name = 'top-level-suite'
+config.suffixes = ['.txt']
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
diff --git a/utils/lit/tests/Inputs/discovery/subdir/lit.local.cfg b/utils/lit/tests/Inputs/discovery/subdir/lit.local.cfg
new file mode 100644
index 0000000..5ae6b3c
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/subdir/lit.local.cfg
@@ -0,0 +1 @@
+config.suffixes = ['.py']
diff --git a/utils/lit/tests/Inputs/discovery/subdir/test-three.py b/utils/lit/tests/Inputs/discovery/subdir/test-three.py
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/subdir/test-three.py
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/discovery/subsuite/lit.cfg b/utils/lit/tests/Inputs/discovery/subsuite/lit.cfg
new file mode 100644
index 0000000..0c2979d
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/subsuite/lit.cfg
@@ -0,0 +1,5 @@
+config.name = 'sub-suite'
+config.suffixes = ['.txt']
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
diff --git a/utils/lit/tests/Inputs/discovery/subsuite/test-one.txt b/utils/lit/tests/Inputs/discovery/subsuite/test-one.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/subsuite/test-one.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/discovery/subsuite/test-two.txt b/utils/lit/tests/Inputs/discovery/subsuite/test-two.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/subsuite/test-two.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/discovery/test-one.txt b/utils/lit/tests/Inputs/discovery/test-one.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/test-one.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/discovery/test-two.txt b/utils/lit/tests/Inputs/discovery/test-two.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/discovery/test-two.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/shtest-format/external_shell/fail.txt b/utils/lit/tests/Inputs/shtest-format/external_shell/fail.txt
new file mode 100644
index 0000000..1e74be5
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/external_shell/fail.txt
@@ -0,0 +1,3 @@
+# Run a command that fails with error on stdout.
+#
+# RUN: cat "does-not-exist"
diff --git a/utils/lit/tests/Inputs/shtest-format/external_shell/lit.local.cfg b/utils/lit/tests/Inputs/shtest-format/external_shell/lit.local.cfg
new file mode 100644
index 0000000..d14d147
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/external_shell/lit.local.cfg
@@ -0,0 +1 @@
+config.test_format = lit.formats.ShTest(execute_external=True)
diff --git a/utils/lit/tests/Inputs/shtest-format/external_shell/pass.txt b/utils/lit/tests/Inputs/shtest-format/external_shell/pass.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/external_shell/pass.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/shtest-format/fail.txt b/utils/lit/tests/Inputs/shtest-format/fail.txt
new file mode 100644
index 0000000..49932c3
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/fail.txt
@@ -0,0 +1 @@
+# RUN: false
diff --git a/utils/lit/tests/Inputs/shtest-format/lit.cfg b/utils/lit/tests/Inputs/shtest-format/lit.cfg
new file mode 100644
index 0000000..78dd1bf
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/lit.cfg
@@ -0,0 +1,7 @@
+config.name = 'shtest-format'
+config.suffixes = ['.txt']
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
+config.target_triple = 'x86_64-unknown-unknown'
+config.available_features.add('a-present-feature')
diff --git a/utils/lit/tests/Inputs/shtest-format/no-test-line.txt b/utils/lit/tests/Inputs/shtest-format/no-test-line.txt
new file mode 100644
index 0000000..f2316bd
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/no-test-line.txt
@@ -0,0 +1 @@
+# Empty!
diff --git a/utils/lit/tests/Inputs/shtest-format/pass.txt b/utils/lit/tests/Inputs/shtest-format/pass.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/pass.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/shtest-format/requires-missing.txt b/utils/lit/tests/Inputs/shtest-format/requires-missing.txt
new file mode 100644
index 0000000..9e6648d
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/requires-missing.txt
@@ -0,0 +1,2 @@
+RUN: true
+REQUIRES: a-missing-feature
diff --git a/utils/lit/tests/Inputs/shtest-format/requires-present.txt b/utils/lit/tests/Inputs/shtest-format/requires-present.txt
new file mode 100644
index 0000000..064f707
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/requires-present.txt
@@ -0,0 +1,2 @@
+RUN: true
+REQUIRES: a-present-feature
diff --git a/utils/lit/tests/Inputs/shtest-format/unsupported_dir/lit.local.cfg b/utils/lit/tests/Inputs/shtest-format/unsupported_dir/lit.local.cfg
new file mode 100644
index 0000000..462e3dc
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/unsupported_dir/lit.local.cfg
@@ -0,0 +1 @@
+config.unsupported = True
diff --git a/utils/lit/tests/Inputs/shtest-format/unsupported_dir/some-test.txt b/utils/lit/tests/Inputs/shtest-format/unsupported_dir/some-test.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/unsupported_dir/some-test.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/shtest-format/xfail-feature.txt b/utils/lit/tests/Inputs/shtest-format/xfail-feature.txt
new file mode 100644
index 0000000..bd6241f
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/xfail-feature.txt
@@ -0,0 +1,2 @@
+# RUN: false
+# XFAIL: a-present-feature
diff --git a/utils/lit/tests/Inputs/shtest-format/xfail-target.txt b/utils/lit/tests/Inputs/shtest-format/xfail-target.txt
new file mode 100644
index 0000000..36760be
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/xfail-target.txt
@@ -0,0 +1,2 @@
+RUN: false
+XFAIL: x86_64
diff --git a/utils/lit/tests/Inputs/shtest-format/xfail.txt b/utils/lit/tests/Inputs/shtest-format/xfail.txt
new file mode 100644
index 0000000..6814cda
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/xfail.txt
@@ -0,0 +1,2 @@
+RUN: false
+XFAIL: *
diff --git a/utils/lit/tests/Inputs/shtest-format/xpass.txt b/utils/lit/tests/Inputs/shtest-format/xpass.txt
new file mode 100644
index 0000000..764d217
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-format/xpass.txt
@@ -0,0 +1,2 @@
+RUN: true
+XFAIL: x86_64
diff --git a/utils/lit/tests/Inputs/shtest-shell/error-0.txt b/utils/lit/tests/Inputs/shtest-shell/error-0.txt
new file mode 100644
index 0000000..631c8df
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/error-0.txt
@@ -0,0 +1,3 @@
+# Check error on an internal shell error (unable to find command).
+#
+# RUN: not-a-real-command
diff --git a/utils/lit/tests/Inputs/shtest-shell/error-1.txt b/utils/lit/tests/Inputs/shtest-shell/error-1.txt
new file mode 100644
index 0000000..e5c8be6
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/error-1.txt
@@ -0,0 +1,3 @@
+# Check error on a shell parsing failure.
+#
+# RUN: echo "missing quote
diff --git a/utils/lit/tests/Inputs/shtest-shell/error-2.txt b/utils/lit/tests/Inputs/shtest-shell/error-2.txt
new file mode 100644
index 0000000..a976286
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/error-2.txt
@@ -0,0 +1,3 @@
+# Check error on a unsupported redirect.
+#
+# RUN: echo "hello" 3>&1
diff --git a/utils/lit/tests/Inputs/shtest-shell/lit.cfg b/utils/lit/tests/Inputs/shtest-shell/lit.cfg
new file mode 100644
index 0000000..4878b65
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/lit.cfg
@@ -0,0 +1,5 @@
+config.name = 'shtest-shell'
+config.suffixes = ['.txt']
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
diff --git a/utils/lit/tests/Inputs/shtest-shell/redirects.txt b/utils/lit/tests/Inputs/shtest-shell/redirects.txt
new file mode 100644
index 0000000..6be88b6
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/redirects.txt
@@ -0,0 +1,41 @@
+# Check stdout redirect (> and >>).
+#
+# RUN: echo "not-present" > %t.stdout-write
+# RUN: echo "is-present" > %t.stdout-write
+# RUN: FileCheck --check-prefix=STDOUT-WRITE < %t.stdout-write %s
+#
+# STDOUT-WRITE-NOT: not-present
+# STDOUT-WRITE: is-present
+#
+# RUN: echo "appended-line" >> %t.stdout-write
+# RUN: FileCheck --check-prefix=STDOUT-APPEND < %t.stdout-write %s
+#
+# STDOUT-APPEND: is-present
+# STDOUT-APPEND: appended-line
+
+
+# Check stderr redirect (2> and 2>>).
+#
+# RUN: echo "not-present" > %t.stderr-write
+# RUN: %S/write-to-stderr.sh 2> %t.stderr-write
+# RUN: FileCheck --check-prefix=STDERR-WRITE < %t.stderr-write %s
+#
+# STDERR-WRITE-NOT: not-present
+# STDERR-WRITE: a line on stderr
+#
+# RUN: %S/write-to-stderr.sh 2>> %t.stderr-write
+# RUN: FileCheck --check-prefix=STDERR-APPEND < %t.stderr-write %s
+#
+# STDERR-APPEND: a line on stderr
+# STDERR-APPEND: a line on stderr
+
+
+# Check combined redirect (&>).
+#
+# RUN: echo "not-present" > %t.combined
+# RUN: %S/write-to-stdout-and-stderr.sh &> %t.combined
+# RUN: FileCheck --check-prefix=COMBINED-WRITE < %t.combined %s
+#
+# COMBINED-WRITE-NOT: not-present
+# COMBINED-WRITE: a line on stdout
+# COMBINED-WRITE: a line on stderr
diff --git a/utils/lit/tests/Inputs/shtest-shell/sequencing-0.txt b/utils/lit/tests/Inputs/shtest-shell/sequencing-0.txt
new file mode 100644
index 0000000..6578db2
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/sequencing-0.txt
@@ -0,0 +1,28 @@
+# Check sequencing operations.
+#
+# RUN: echo "first-line" > %t.out && echo "second-line" >> %t.out
+# RUN: FileCheck --check-prefix CHECK-AND < %t.out %s
+#
+# CHECK-AND: first-line
+# CHECK-AND: second-line
+#
+# The false case of && is tested in sequencing-2.txt
+
+
+# RUN: echo "first-line" > %t.out || echo "second-line" >> %t.out
+# RUN: FileCheck --check-prefix CHECK-OR-1 < %t.out %s
+#
+# CHECK-OR-1: first-line
+# CHECK-OR-1-NOT: second-line
+
+# RUN: false || echo "second-line" > %t.out
+# RUN: FileCheck --check-prefix CHECK-OR-2 < %t.out %s
+#
+# CHECK-OR-2: second-line
+
+
+# RUN: echo "first-line" > %t.out; echo "second-line" >> %t.out
+# RUN: FileCheck --check-prefix CHECK-SEQ < %t.out %s
+#
+# CHECK-SEQ: first-line
+# CHECK-SEQ: second-line
diff --git a/utils/lit/tests/Inputs/shtest-shell/sequencing-1.txt b/utils/lit/tests/Inputs/shtest-shell/sequencing-1.txt
new file mode 100644
index 0000000..5a1794c
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/sequencing-1.txt
@@ -0,0 +1,2 @@
+# RUN: false && true
+# XFAIL: *
diff --git a/utils/lit/tests/Inputs/shtest-shell/write-to-stderr.sh b/utils/lit/tests/Inputs/shtest-shell/write-to-stderr.sh
new file mode 100755
index 0000000..ead3fd3
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/write-to-stderr.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+echo "a line on stderr" 1>&2
diff --git a/utils/lit/tests/Inputs/shtest-shell/write-to-stdout-and-stderr.sh b/utils/lit/tests/Inputs/shtest-shell/write-to-stdout-and-stderr.sh
new file mode 100755
index 0000000..f20de5d
--- /dev/null
+++ b/utils/lit/tests/Inputs/shtest-shell/write-to-stdout-and-stderr.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+echo "a line on stdout"
+echo "a line on stderr" 1>&2
diff --git a/utils/lit/tests/Inputs/unittest-adaptor/lit.cfg b/utils/lit/tests/Inputs/unittest-adaptor/lit.cfg
new file mode 100644
index 0000000..52de709
--- /dev/null
+++ b/utils/lit/tests/Inputs/unittest-adaptor/lit.cfg
@@ -0,0 +1,5 @@
+config.name = 'unittest-adaptor'
+config.suffixes = ['.txt']
+config.test_format = lit.formats.ShTest()
+config.test_source_root = None
+config.test_exec_root = None
diff --git a/utils/lit/tests/Inputs/unittest-adaptor/test-one.txt b/utils/lit/tests/Inputs/unittest-adaptor/test-one.txt
new file mode 100644
index 0000000..b80b60b
--- /dev/null
+++ b/utils/lit/tests/Inputs/unittest-adaptor/test-one.txt
@@ -0,0 +1 @@
+# RUN: true
diff --git a/utils/lit/tests/Inputs/unittest-adaptor/test-two.txt b/utils/lit/tests/Inputs/unittest-adaptor/test-two.txt
new file mode 100644
index 0000000..49932c3
--- /dev/null
+++ b/utils/lit/tests/Inputs/unittest-adaptor/test-two.txt
@@ -0,0 +1 @@
+# RUN: false
diff --git a/utils/lit/tests/discovery.py b/utils/lit/tests/discovery.py
new file mode 100644
index 0000000..54b99d3
--- /dev/null
+++ b/utils/lit/tests/discovery.py
@@ -0,0 +1,25 @@
+# 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
diff --git a/utils/lit/tests/lit.cfg b/utils/lit/tests/lit.cfg
new file mode 100644
index 0000000..32760ce
--- /dev/null
+++ b/utils/lit/tests/lit.cfg
@@ -0,0 +1,36 @@
+# -*- Python -*-
+
+import os
+
+# Configuration file for the 'lit' test runner.
+
+# name: The name of this test suite.
+config.name = 'lit'
+
+# testFormat: The test format to use to interpret tests.
+config.test_format = lit.formats.ShTest(execute_external=False)
+
+# suffixes: A list of file extensions to treat as test files.
+config.suffixes = ['.py']
+
+# excludes: A list of individual files to exclude.
+config.excludes = ['Inputs']
+
+# test_source_root: The root path where tests are located.
+config.test_source_root = os.path.dirname(__file__)
+config.test_exec_root = config.test_source_root
+
+config.target_triple = None
+
+src_root = os.path.join(config.test_source_root, '..')
+config.environment['PYTHONPATH'] = src_root
+config.substitutions.append(('%{src_root}', src_root))
+config.substitutions.append(('%{inputs}', os.path.join(
+            src_root, 'tests', 'Inputs')))
+config.substitutions.append(('%{lit}', os.path.join(src_root, 'lit.py')))
+
+# Enable coverage.py reporting, assuming the coverage module has been installed
+# and sitecustomize.py in the virtualenv has been modified appropriately.
+if lit.params.get('check-coverage', None):
+    config.environment['COVERAGE_PROCESS_START'] = os.path.join(
+        os.path.dirname(__file__), ".coveragerc")
diff --git a/utils/lit/tests/shell-parsing.py b/utils/lit/tests/shell-parsing.py
new file mode 100644
index 0000000..f644132
--- /dev/null
+++ b/utils/lit/tests/shell-parsing.py
@@ -0,0 +1,3 @@
+# Just run the ShUtil unit tests.
+#
+# RUN: python -m lit.ShUtil
diff --git a/utils/lit/tests/shtest-format.py b/utils/lit/tests/shtest-format.py
new file mode 100644
index 0000000..4b36873
--- /dev/null
+++ b/utils/lit/tests/shtest-format.py
@@ -0,0 +1,43 @@
+# Check the various features of the ShTest format.
+#
+# RUN: not %{lit} -j 1 -v %{inputs}/shtest-format > %t.out
+# RUN: FileCheck < %t.out %s
+#
+# END.
+
+# CHECK: -- Testing:
+
+# CHECK: FAIL: shtest-format :: external_shell/fail.txt
+# CHECK: *** TEST 'shtest-format :: external_shell/fail.txt' FAILED ***
+# CHECK: Command Output (stderr):
+# CHECK: cat: does-not-exist: No such file or directory
+# CHECK: --
+
+# CHECK: PASS: shtest-format :: external_shell/pass.txt
+
+# CHECK: FAIL: shtest-format :: fail.txt
+
+# CHECK: UNRESOLVED: shtest-format :: no-test-line.txt
+# CHECK: PASS: shtest-format :: pass.txt
+# CHECK: UNSUPPORTED: shtest-format :: requires-missing.txt
+# CHECK: PASS: shtest-format :: requires-present.txt
+# CHECK: UNSUPPORTED: shtest-format :: unsupported_dir/some-test.txt
+# CHECK: XFAIL: shtest-format :: xfail-feature.txt
+# CHECK: XFAIL: shtest-format :: xfail-target.txt
+# CHECK: XFAIL: shtest-format :: xfail.txt
+# CHECK: XPASS: shtest-format :: xpass.txt
+# CHECK: Testing Time
+
+# CHECK: Unexpected Passing Tests (1)
+# CHECK: shtest-format :: xpass.txt
+
+# CHECK: Failing Tests (2)
+# CHECK: shtest-format :: external_shell/fail.txt
+# CHECK: shtest-format :: fail.txt
+
+# CHECK: Expected Passes    : 3
+# CHECK: Expected Failures  : 3
+# CHECK: Unsupported Tests  : 2
+# CHECK: Unresolved Tests   : 1
+# CHECK: Unexpected Passes  : 1
+# CHECK: Unexpected Failures: 2
diff --git a/utils/lit/tests/shtest-shell.py b/utils/lit/tests/shtest-shell.py
new file mode 100644
index 0000000..32479e1
--- /dev/null
+++ b/utils/lit/tests/shtest-shell.py
@@ -0,0 +1,33 @@
+# Check the internal shell handling component of the ShTest format.
+#
+# RUN: not %{lit} -j 1 -v %{inputs}/shtest-shell > %t.out
+# RUN: FileCheck < %t.out %s
+#
+# END.
+
+# CHECK: -- Testing:
+
+# CHECK: FAIL: shtest-shell :: error-0.txt
+# CHECK: *** TEST 'shtest-shell :: error-0.txt' FAILED ***
+# CHECK: Command 0: "not-a-real-command"
+# CHECK: Command 0 Result: 127
+# CHECK: Command 0 Stderr:
+# CHECK: 'not-a-real-command': command not found
+# CHECK: ***
+
+# FIXME: The output here sucks.
+#
+# CHECK: FAIL: shtest-shell :: error-1.txt
+# CHECK: *** TEST 'shtest-shell :: error-1.txt' FAILED ***
+# CHECK: shell parser error on: 'echo "missing quote'
+# CHECK: ***
+
+# CHECK: FAIL: shtest-shell :: error-2.txt
+# CHECK: *** TEST 'shtest-shell :: error-2.txt' FAILED ***
+# CHECK: Unsupported redirect:
+# CHECK: ***
+
+# CHECK: PASS: shtest-shell :: redirects.txt
+# CHECK: PASS: shtest-shell :: sequencing-0.txt
+# CHECK: XFAIL: shtest-shell :: sequencing-1.txt
+# CHECK: Failing Tests (3)
diff --git a/utils/lit/tests/unittest-adaptor.py b/utils/lit/tests/unittest-adaptor.py
new file mode 100644
index 0000000..243dd41
--- /dev/null
+++ b/utils/lit/tests/unittest-adaptor.py
@@ -0,0 +1,18 @@
+# Check the lit adaption to run under unittest.
+#
+# RUN: python %s %{inputs}/unittest-adaptor 2> %t.err
+# RUN: FileCheck < %t.err %s
+#
+# CHECK: unittest-adaptor :: test-one.txt ... ok
+# CHECK: unittest-adaptor :: test-two.txt ... FAIL
+
+import unittest
+import sys
+
+import lit
+import lit.discovery
+
+input_path = sys.argv[1]
+unittest_suite = lit.discovery.load_test_suite([input_path])
+runner = unittest.TextTestRunner(verbosity=2)
+runner.run(unittest_suite)
diff --git a/utils/lit/tests/usage.py b/utils/lit/tests/usage.py
new file mode 100644
index 0000000..e10d613
--- /dev/null
+++ b/utils/lit/tests/usage.py
@@ -0,0 +1,6 @@
+# Basic sanity check that usage works.
+#
+# RUN: %{lit} --help > %t.out
+# RUN: FileCheck < %t.out %s
+#
+# CHECK: Usage: lit.py [options] {file-or-path}