bitbake: Add start of bitbake regression/self testing

This adds some basic unit testing for the codeparser and data store code. Many of
the actual test cases were taken from work by Chris Larson's OE-Signatures work but with
changes to adapt to the current bitbake APIs we need to test.

I also imported CoW tests written by Holger Freyther from the original bitbake-test
codebase: http://svn.berlios.de/wsvn/bitbake/trunk/bitbake-tests/tests/ and
some tests from the doctests that were removed in commit:
http://git.openembedded.org/bitbake/commit?id=3a11c2807972bbbddffde2fa67fc380d159da467

(Bitbake rev: ae4a95780e3e08cf73c854efa8cd93379e00c4e5)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 252 insertions, 0 deletions

diff --git a/bitbake/lib/bb/tests/data.py b/bitbake/lib/bb/tests/data.py
new file mode 100644
index 0000000000..b2ab8eeeb8
--- /dev/null
+++ b/bitbake/lib/bb/tests/data.py
@@ -0,0 +1,252 @@
+#
+# BitBake Tests for the Data Store (data.py/data_smart.py)
+#
+# Copyright (C) 2010 Chris Larson
+# Copyright (C) 2012 Richard Purdie
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+
+import unittest
+import bb
+import bb.data
+
+class DataExpansions(unittest.TestCase):
+    def setUp(self):
+        self.d = bb.data.init()
+        self.d["foo"] = "value of foo"
+        self.d["bar"] = "value of bar"
+        self.d["value of foo"] = "value of 'value of foo'"
+
+    def test_one_var(self):
+        val = self.d.expand("${foo}")
+        self.assertEqual(str(val), "value of foo")
+
+    def test_indirect_one_var(self):
+        val = self.d.expand("${${foo}}")
+        self.assertEqual(str(val), "value of 'value of foo'")
+
+    def test_indirect_and_another(self):
+        val = self.d.expand("${${foo}} ${bar}")
+        self.assertEqual(str(val), "value of 'value of foo' value of bar")
+
+    def test_python_snippet(self):
+        val = self.d.expand("${@5*12}")
+        self.assertEqual(str(val), "60")
+
+    def test_expand_in_python_snippet(self):
+        val = self.d.expand("${@'boo ' + '${foo}'}")
+        self.assertEqual(str(val), "boo value of foo")
+
+    def test_python_snippet_getvar(self):
+        val = self.d.expand("${@d.getVar('foo', True) + ' ${bar}'}")
+        self.assertEqual(str(val), "value of foo value of bar")
+
+    def test_python_snippet_syntax_error(self):
+        self.d.setVar("FOO", "${@foo = 5}")
+        self.assertRaises(bb.data_smart.ExpansionError, self.d.getVar, "FOO", True)
+
+    def test_python_snippet_runtime_error(self):
+        self.d.setVar("FOO", "${@int('test')}")
+        self.assertRaises(bb.data_smart.ExpansionError, self.d.getVar, "FOO", True)
+
+    def test_python_snippet_error_path(self):
+        self.d.setVar("FOO", "foo value ${BAR}")
+        self.d.setVar("BAR", "bar value ${@int('test')}")
+        self.assertRaises(bb.data_smart.ExpansionError, self.d.getVar, "FOO", True)
+
+    def test_value_containing_value(self):
+        val = self.d.expand("${@d.getVar('foo', True) + ' ${bar}'}")
+        self.assertEqual(str(val), "value of foo value of bar")
+
+    def test_reference_undefined_var(self):
+        val = self.d.expand("${undefinedvar} meh")
+        self.assertEqual(str(val), "${undefinedvar} meh")
+
+    def test_double_reference(self):
+        self.d.setVar("BAR", "bar value")
+        self.d.setVar("FOO", "${BAR} foo ${BAR}")
+        val = self.d.getVar("FOO", True)
+        self.assertEqual(str(val), "bar value foo bar value")
+
+    def test_direct_recursion(self):
+        self.d.setVar("FOO", "${FOO}")
+        self.assertRaises(bb.data_smart.ExpansionError, self.d.getVar, "FOO", True)
+
+    def test_indirect_recursion(self):
+        self.d.setVar("FOO", "${BAR}")
+        self.d.setVar("BAR", "${BAZ}")
+        self.d.setVar("BAZ", "${FOO}")
+        self.assertRaises(bb.data_smart.ExpansionError, self.d.getVar, "FOO", True)
+
+    def test_recursion_exception(self):
+        self.d.setVar("FOO", "${BAR}")
+        self.d.setVar("BAR", "${${@'FOO'}}")
+        self.assertRaises(bb.data_smart.ExpansionError, self.d.getVar, "FOO", True)
+
+    def test_incomplete_varexp_single_quotes(self):
+        self.d.setVar("FOO", "sed -i -e 's:IP{:I${:g' $pc")
+        val = self.d.getVar("FOO", True)
+        self.assertEqual(str(val), "sed -i -e 's:IP{:I${:g' $pc")
+
+    def test_nonstring(self):
+        self.d.setVar("TEST", 5)
+        val = self.d.getVar("TEST", True)
+        self.assertEqual(str(val), "5")
+
+    def test_rename(self):
+        self.d.renameVar("foo", "newfoo")
+        self.assertEqual(self.d.getVar("newfoo"), "value of foo")
+        self.assertEqual(self.d.getVar("foo"), None)
+
+    def test_deletion(self):
+        self.d.delVar("foo")
+        self.assertEqual(self.d.getVar("foo"), None)
+
+    def test_keys(self):
+        keys = self.d.keys()
+        self.assertEqual(keys, ['value of foo', 'foo', 'bar'])
+
+class TestNestedExpansions(unittest.TestCase):
+    def setUp(self):
+        self.d = bb.data.init()
+        self.d["foo"] = "foo"
+        self.d["bar"] = "bar"
+        self.d["value of foobar"] = "187"
+
+    def test_refs(self):
+        val = self.d.expand("${value of ${foo}${bar}}")
+        self.assertEqual(str(val), "187")
+
+    #def test_python_refs(self):
+    #    val = self.d.expand("${@${@3}**2 + ${@4}**2}")
+    #    self.assertEqual(str(val), "25")
+
+    def test_ref_in_python_ref(self):
+        val = self.d.expand("${@'${foo}' + 'bar'}")
+        self.assertEqual(str(val), "foobar")
+
+    def test_python_ref_in_ref(self):
+        val = self.d.expand("${${@'f'+'o'+'o'}}")
+        self.assertEqual(str(val), "foo")
+
+    def test_deep_nesting(self):
+        depth = 100
+        val = self.d.expand("${" * depth + "foo" + "}" * depth)
+        self.assertEqual(str(val), "foo")
+
+    #def test_deep_python_nesting(self):
+    #    depth = 50
+    #    val = self.d.expand("${@" * depth + "1" + "+1}" * depth)
+    #    self.assertEqual(str(val), str(depth + 1))
+
+    def test_mixed(self):
+        val = self.d.expand("${value of ${@('${foo}'+'bar')[0:3]}${${@'BAR'.lower()}}}")
+        self.assertEqual(str(val), "187")
+
+    def test_runtime(self):
+        val = self.d.expand("${${@'value of' + ' f'+'o'+'o'+'b'+'a'+'r'}}")
+        self.assertEqual(str(val), "187")
+
+class TestMemoize(unittest.TestCase):
+    def test_memoized(self):
+        d = bb.data.init()
+        d.setVar("FOO", "bar")
+        self.assertTrue(d.getVar("FOO") is d.getVar("FOO"))
+
+    def test_not_memoized(self):
+        d1 = bb.data.init()
+        d2 = bb.data.init()
+        d1.setVar("FOO", "bar")
+        d2.setVar("FOO", "bar2")
+        self.assertTrue(d1.getVar("FOO") is not d2.getVar("FOO"))
+
+    def test_changed_after_memoized(self):
+        d = bb.data.init()
+        d.setVar("foo", "value of foo")
+        self.assertEqual(str(d.getVar("foo")), "value of foo")
+        d.setVar("foo", "second value of foo")
+        self.assertEqual(str(d.getVar("foo")), "second value of foo")
+
+    def test_same_value(self):
+        d = bb.data.init()
+        d.setVar("foo", "value of")
+        d.setVar("bar", "value of")
+        self.assertEqual(d.getVar("foo"),
+                         d.getVar("bar"))
+
+class TestConcat(unittest.TestCase):
+    def setUp(self):
+        self.d = bb.data.init()
+        self.d.setVar("FOO", "foo")
+        self.d.setVar("VAL", "val")
+        self.d.setVar("BAR", "bar")
+
+    def test_prepend(self):
+        self.d.setVar("TEST", "${VAL}")
+        self.d.prependVar("TEST", "${FOO}:")
+        self.assertEqual(self.d.getVar("TEST", True), "foo:val")
+
+    def test_append(self):
+        self.d.setVar("TEST", "${VAL}")
+        self.d.appendVar("TEST", ":${BAR}")
+        self.assertEqual(self.d.getVar("TEST", True), "val:bar")
+
+    def test_multiple_append(self):
+        self.d.setVar("TEST", "${VAL}")
+        self.d.prependVar("TEST", "${FOO}:")
+        self.d.appendVar("TEST", ":val2")
+        self.d.appendVar("TEST", ":${BAR}")
+        self.assertEqual(self.d.getVar("TEST", True), "foo:val:val2:bar")
+
+class TestOverrides(unittest.TestCase):
+    def setUp(self):
+        self.d = bb.data.init()
+        self.d.setVar("OVERRIDES", "foo:bar:local")
+        self.d.setVar("TEST", "testvalue")
+
+    def test_no_override(self):
+        bb.data.update_data(self.d)
+        self.assertEqual(self.d.getVar("TEST", True), "testvalue")
+
+    def test_one_override(self):
+        self.d.setVar("TEST_bar", "testvalue2")
+        bb.data.update_data(self.d)
+        self.assertEqual(self.d.getVar("TEST", True), "testvalue2")
+
+    def test_multiple_override(self):
+        self.d.setVar("TEST_bar", "testvalue2")
+        self.d.setVar("TEST_local", "testvalue3")
+        self.d.setVar("TEST_foo", "testvalue4")
+        bb.data.update_data(self.d)
+        self.assertEqual(self.d.getVar("TEST", True), "testvalue3")
+
+
+class TestFlags(unittest.TestCase):
+    def setUp(self):
+        self.d = bb.data.init()
+        self.d.setVar("foo", "value of foo")
+        self.d.setVarFlag("foo", "flag1", "value of flag1")
+        self.d.setVarFlag("foo", "flag2", "value of flag2")
+
+    def test_setflag(self):
+        self.assertEqual(self.d.getVarFlag("foo", "flag1"), "value of flag1")
+        self.assertEqual(self.d.getVarFlag("foo", "flag2"), "value of flag2")
+
+    def test_delflag(self):
+        self.d.delVarFlag("foo", "flag2")
+        self.assertEqual(self.d.getVarFlag("foo", "flag1"), "value of flag1")
+        self.assertEqual(self.d.getVarFlag("foo", "flag2"), None)
+
+