[lit] Move ManyTests examples to lit/examples/many-tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188109 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 40 insertions, 0 deletions

diff --git a/utils/lit/examples/README.txt b/utils/lit/examples/README.txt
new file mode 100644
index 0000000000..a59daa8f77
--- /dev/null
+++ b/utils/lit/examples/README.txt
@@ -0,0 +1,7 @@
+==============
+ lit Examples
+==============
+
+This directory contains examples of 'lit' test suite configurations. The test
+suites they define can be run with 'lit examples/example-name', for more details
+see the README in each example.
diff --git a/utils/lit/examples/many-tests/README.txt b/utils/lit/examples/many-tests/README.txt
new file mode 100644
index 0000000000..6bffff1468
--- /dev/null
+++ b/utils/lit/examples/many-tests/README.txt
@@ -0,0 +1,10 @@
+========================
+ Many Tests lit Example
+========================
+
+This directory contains a trivial lit test suite configuration that defines a
+custom test format which just generates a large (N=10000) number of tests that
+do a small amount of work in the Python test execution code.
+
+This test suite is useful for testing the performance of lit on large numbers of
+tests.
diff --git a/utils/lit/examples/many-tests/lit.cfg b/utils/lit/examples/many-tests/lit.cfg
new file mode 100644
index 0000000000..8f7b940b6e
--- /dev/null
+++ b/utils/lit/examples/many-tests/lit.cfg
@@ -0,0 +1,23 @@
+# -*- Python -*-
+
+from lit import Test
+
+class ManyTests(object):
+    def __init__(self, N=10000):
+        self.N = N
+
+    def getTestsInDirectory(self, testSuite, path_in_suite,
+                            litConfig, localConfig):
+        for i in range(self.N):
+            test_name = 'test-%04d' % (i,)
+            yield Test.Test(testSuite, path_in_suite + (test_name,),
+                            localConfig)
+
+    def execute(self, test, litConfig):
+        # Do a "non-trivial" amount of Python work.
+        sum = 0
+        for i in range(10000):
+            sum += i
+        return Test.PASS,''
+
+config.test_format = ManyTests()