From cdc87f35674c1a8a23f9c13a34755cf7983f9f93 Mon Sep 17 00:00:00 2001
From: Marius Kintel <marius@kintel.net>
Date: Sun, 11 Jul 2010 19:22:24 +0200
Subject: Regression test howto


diff --git a/doc/testing.txt b/doc/testing.txt
new file mode 100644
index 0000000..e3856b0
--- /dev/null
+++ b/doc/testing.txt
@@ -0,0 +1,14 @@
+Adding  a new regression test:
+
+1) create a test file at an appropriate location under testdata/
+2) if the test is non-obvious, create a human readable description of the test in the same directory (e.g testdata/scad/mytest.txt)
+3) if a new test app was written, this must be added to tests/CMakeLists
+4) run the test with the environment variable TEST_GENERATE=1, e.g.:
+   $ ECAD_GENERATE=1 ctest -R mytest
+   (this will generate a mytest-expected.txt file which is used for regression testing)
+5) manually verify that the output is correct (test-data/scad/mytest-expected.txt)
+6) run the test normally and verify that it passes:
+  $ ctest -R mytest
+
+Note that test files which don't have an *-expected.<suffix> file will
+be ignored for the test apps in question.
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