#
# BitBake Tests for the Data Store (data.py/data_smart.py)
#
# Copyright (C) 2010 Chris Larson
# Copyright (C) 2012 Richard Purdie
#
# SPDX-License-Identifier: GPL-2.0-only
#

import unittest
import bb
import bb.data
import bb.parse
import io
import logging
import os

class LogRecord():
    def __enter__(self):
        logs = []
        class LogHandler(logging.Handler):
            def emit(self, record):
                logs.append(record)
        logger = logging.getLogger("BitBake")
        handler = LogHandler()
        self.handler = handler
        logger.addHandler(handler)
        return logs
    def __exit__(self, type, value, traceback):
        logger = logging.getLogger("BitBake")
        logger.removeHandler(self.handler)
        return

def logContains(item, logs):
    for l in logs:
        m = l.getMessage()
        if item in m:
            return True
    return False

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_python_snippet_w_dict(self):
        val = self.d.expand("${@{ 'green': 1, 'blue': 2 }['green']}")
        self.assertEqual(str(val), "1")

    def test_python_unexpanded_multi(self):
        self.d.setVar("bar", "${unsetvar}")
        val = self.d.expand("${@2*2},${foo},${@d.getVar('foo') + ' ${bar}'},${foo}")
        self.assertEqual(str(val), "4,value_of_foo,${@d.getVar('foo') + ' ${unsetvar}'},value_of_foo")

    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') + ' ${bar}'}")
        self.assertEqual(str(val), "value_of_foo value_of_bar")

    def test_python_snippet_function_reference(self):
        self.d.setVar("TESTVAL", "testvalue")
        self.d.setVar("testfunc", 'd.getVar("TESTVAL")')
        context = bb.utils.get_context()
        context["testfunc"] = lambda d: d.getVar("TESTVAL")
        val = self.d.expand("${@testfunc(d)}")
        self.assertEqual(str(val), "testvalue")

    def test_python_snippet_builtin_metadata(self):
        self.d.setVar("eval", "INVALID")
        self.d.expand("${@eval('3')}")

    def test_python_unexpanded(self):
        self.d.setVar("bar", "${unsetvar}")
        val = self.d.expand("${@d.getVar('foo') + ' ${bar}'}")
        self.assertEqual(str(val), "${@d.getVar('foo') + ' ${unsetvar}'}")

    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') + ' ${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")
        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' $pc")
        val = self.d.getVar("FOO")
        self.assertEqual(str(val), "sed -i -e 's:IP{:I${:g' $pc")

    def test_nonstring(self):
        self.d.setVar("TEST", 5)
        val = self.d.getVar("TEST")
        self.assertEqual(str(val), "5")

    def test_rename(self):
        self.d.renameVar("foo", "newfoo")
        self.assertEqual(self.d.getVar("newfoo", False), "value_of_foo")
        self.assertEqual(self.d.getVar("foo", False), None)

    def test_deletion(self):
        self.d.delVar("foo")
        self.assertEqual(self.d.getVar("foo", False), None)

    def test_keys(self):
        keys = list(self.d.keys())
        self.assertCountEqual(keys, ['value_of_foo', 'foo', 'bar'])

    def test_keys_deletion(self):
        newd = bb.data.createCopy(self.d)
        newd.delVar("bar")
        keys = list(newd.keys())
        self.assertCountEqual(keys, ['value_of_foo', 'foo'])

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", False) is d.getVar("FOO", False))

    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", False) is not d2.getVar("FOO", False))

    def test_changed_after_memoized(self):
        d = bb.data.init()
        d.setVar("foo", "value of foo")
        self.assertEqual(str(d.getVar("foo", False)), "value of foo")
        d.setVar("foo", "second value of foo")
        self.assertEqual(str(d.getVar("foo", False)), "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", False),
                         d.getVar("bar", False))

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"), "foo:val")

    def test_append(self):
        self.d.setVar("TEST", "${VAL}")
        self.d.appendVar("TEST", ":${BAR}")
        self.assertEqual(self.d.getVar("TEST"), "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"), "foo:val:val2:bar")

class TestConcatOverride(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", "${VAL}")
        self.d.setVar("TEST:prepend", "${FOO}:")
        self.assertEqual(self.d.getVar("TEST"), "foo:val")

    def test_append(self):
        self.d.setVar("TEST", "${VAL}")
        self.d.setVar("TEST:append", ":${BAR}")
        self.assertEqual(self.d.getVar("TEST"), "val:bar")

    def test_multiple_append(self):
        self.d.setVar("TEST", "${VAL}")
        self.d.setVar("TEST:prepend", "${FOO}:")
        self.d.setVar("TEST:append", ":val2")
        self.d.setVar("TEST:append", ":${BAR}")
        self.assertEqual(self.d.getVar("TEST"), "foo:val:val2:bar")

    def test_append_unset(self):
        self.d.setVar("TEST:prepend", "${FOO}:")
        self.d.setVar("TEST:append", ":val2")
        self.d.setVar("TEST:append", ":${BAR}")
        self.assertEqual(self.d.getVar("TEST"), "foo::val2:bar")

    def test_remove(self):
        self.d.setVar("TEST", "${VAL} ${BAR}")
        self.d.setVar("TEST:remove", "val")
        self.assertEqual(self.d.getVar("TEST"), " bar")

    def test_remove_cleared(self):
        self.d.setVar("TEST", "${VAL} ${BAR}")
        self.d.setVar("TEST:remove", "val")
        self.d.setVar("TEST", "${VAL} ${BAR}")
        self.assertEqual(self.d.getVar("TEST"), "val bar")

    # Ensure the value is unchanged if we have an inactive remove override
    # (including that whitespace is preserved)
    def test_remove_inactive_override(self):
        self.d.setVar("TEST", "${VAL} ${BAR}    123")
        self.d.setVar("TEST:remove:inactiveoverride", "val")
        self.assertEqual(self.d.getVar("TEST"), "val bar    123")

    def test_doubleref_remove(self):
        self.d.setVar("TEST", "${VAL} ${BAR}")
        self.d.setVar("TEST:remove", "val")
        self.d.setVar("TEST_TEST", "${TEST} ${TEST}")
        self.assertEqual(self.d.getVar("TEST_TEST"), " bar  bar")

    def test_empty_remove(self):
        self.d.setVar("TEST", "")
        self.d.setVar("TEST:remove", "val")
        self.assertEqual(self.d.getVar("TEST"), "")

    def test_remove_expansion(self):
        self.d.setVar("BAR", "Z")
        self.d.setVar("TEST", "${BAR}/X Y")
        self.d.setVar("TEST:remove", "${BAR}/X")
        self.assertEqual(self.d.getVar("TEST"), " Y")

    def test_remove_expansion_items(self):
        self.d.setVar("TEST", "A B C D")
        self.d.setVar("BAR", "B D")
        self.d.setVar("TEST:remove", "${BAR}")
        self.assertEqual(self.d.getVar("TEST"), "A  C ")

    def test_remove_preserve_whitespace(self):
        # When the removal isn't active, the original value should be preserved
        self.d.setVar("TEST", " A B")
        self.d.setVar("TEST:remove", "C")
        self.assertEqual(self.d.getVar("TEST"), " A B")

    def test_remove_preserve_whitespace2(self):
        # When the removal is active preserve the whitespace
        self.d.setVar("TEST", " A B")
        self.d.setVar("TEST:remove", "B")
        self.assertEqual(self.d.getVar("TEST"), " A ")

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):
        self.assertEqual(self.d.getVar("TEST"), "testvalue")

    def test_one_override(self):
        self.d.setVar("TEST:bar", "testvalue2")
        self.assertEqual(self.d.getVar("TEST"), "testvalue2")

    def test_one_override_unset(self):
        self.d.setVar("TEST2:bar", "testvalue2")

        self.assertEqual(self.d.getVar("TEST2"), "testvalue2")
        self.assertCountEqual(list(self.d.keys()), ['TEST', 'TEST2', 'OVERRIDES', 'TEST2:bar'])

    def test_multiple_override(self):
        self.d.setVar("TEST:bar", "testvalue2")
        self.d.setVar("TEST:local", "testvalue3")
        self.d.setVar("TEST:foo", "testvalue4")
        self.assertEqual(self.d.getVar("TEST"), "testvalue3")
        self.assertCountEqual(list(self.d.keys()), ['TEST', 'TEST:foo', 'OVERRIDES', 'TEST:bar', 'TEST:local'])

    def test_multiple_combined_overrides(self):
        self.d.setVar("TEST:local:foo:bar", "testvalue3")
        self.assertEqual(self.d.getVar("TEST"), "testvalue3")

    def test_multiple_overrides_unset(self):
        self.d.setVar("TEST2:local:foo:bar", "testvalue3")
        self.assertEqual(self.d.getVar("TEST2"), "testvalue3")

    def test_keyexpansion_override(self):
        self.d.setVar("LOCAL", "local")
        self.d.setVar("TEST:bar", "testvalue2")
        self.d.setVar("TEST:${LOCAL}", "testvalue3")
        self.d.setVar("TEST:foo", "testvalue4")
        bb.data.expandKeys(self.d)
        self.assertEqual(self.d.getVar("TEST"), "testvalue3")

    def test_rename_override(self):
        self.d.setVar("ALTERNATIVE:ncurses-tools:class-target", "a")
        self.d.setVar("OVERRIDES", "class-target")
        self.d.renameVar("ALTERNATIVE:ncurses-tools", "ALTERNATIVE:lib32-ncurses-tools")
        self.assertEqual(self.d.getVar("ALTERNATIVE:lib32-ncurses-tools"), "a")

    def test_underscore_override(self):
        self.d.setVar("TEST:bar", "testvalue2")
        self.d.setVar("TEST:some_val", "testvalue3")
        self.d.setVar("TEST:foo", "testvalue4")
        self.d.setVar("OVERRIDES", "foo:bar:some_val")
        self.assertEqual(self.d.getVar("TEST"), "testvalue3")

    # Test an override with _<numeric> in it based on a real world OE issue
    def test_underscore_override_2(self):
        self.d.setVar("TARGET_ARCH", "x86_64")
        self.d.setVar("PN", "test-${TARGET_ARCH}")
        self.d.setVar("VERSION", "1")
        self.d.setVar("VERSION:pn-test-${TARGET_ARCH}", "2")
        self.d.setVar("OVERRIDES", "pn-${PN}")
        bb.data.expandKeys(self.d)
        self.assertEqual(self.d.getVar("VERSION"), "2")

    def test_remove_with_override(self):
        self.d.setVar("TEST:bar", "testvalue2")
        self.d.setVar("TEST:some_val", "testvalue3 testvalue5")
        self.d.setVar("TEST:some_val:remove", "testvalue3")
        self.d.setVar("TEST:foo", "testvalue4")
        self.d.setVar("OVERRIDES", "foo:bar:some_val")
        self.assertEqual(self.d.getVar("TEST"), " testvalue5")

    def test_append_and_override_1(self):
        self.d.setVar("TEST:append", "testvalue2")
        self.d.setVar("TEST:bar", "testvalue3")
        self.assertEqual(self.d.getVar("TEST"), "testvalue3testvalue2")

    def test_append_and_override_2(self):
        self.d.setVar("TEST:append:bar", "testvalue2")
        self.assertEqual(self.d.getVar("TEST"), "testvaluetestvalue2")

    def test_append_and_override_3(self):
        self.d.setVar("TEST:bar:append", "testvalue2")
        self.assertEqual(self.d.getVar("TEST"), "testvalue2")

    def test_append_and_unused_override(self):
        # Had a bug where an unused override append could return "" instead of None
        self.d.setVar("BAR:append:unusedoverride", "testvalue2")
        self.assertEqual(self.d.getVar("BAR"), None)

class TestKeyExpansion(unittest.TestCase):
    def setUp(self):
        self.d = bb.data.init()
        self.d.setVar("FOO", "foo")
        self.d.setVar("BAR", "foo")

    def test_keyexpand(self):
        self.d.setVar("VAL_${FOO}", "A")
        self.d.setVar("VAL_${BAR}", "B")
        with LogRecord() as logs:
            bb.data.expandKeys(self.d)
            self.assertTrue(logContains("Variable key VAL_${FOO} (A) replaces original key VAL_foo (B)", logs))
        self.assertEqual(self.d.getVar("VAL_foo"), "A")

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", "_defaultval_flag_flag1", "default of flag1")
        self.d.setVarFlag("foo", "flag2", "value of flag2")
        self.d.setVarFlag("foo", "_defaultval_flag_flag2", "default of flag2")
        self.d.setVarFlag("foo", "flag3", "value of flag3")
        self.d.setVarFlag("foo", "_defaultval_flag_flagnovalue", "default of flagnovalue")

    def test_setflag(self):
        self.assertEqual(self.d.getVarFlag("foo", "flag1", False), "value of flag1")
        self.assertEqual(self.d.getVarFlag("foo", "flag2", False), "value of flag2")
        self.assertDictEqual(
            self.d.getVarFlags("foo"),
            {
                "flag1": "value of flag1",
                "flag2": "value of flag2",
                "flag3": "value of flag3",
                "flagnovalue": "default of flagnovalue",
            }
        )
        self.assertDictEqual(
            self.d.getVarFlags("foo", internalflags=True),
            {
                "_content": "value of foo",
                "flag1": "value of flag1",
                "flag2": "value of flag2",
                "flag3": "value of flag3",
                "_defaultval_flag_flag1": "default of flag1",
                "_defaultval_flag_flag2": "default of flag2",
                "_defaultval_flag_flagnovalue": "default of flagnovalue",
            }
        )

    def test_delflag(self):
        self.d.delVarFlag("foo", "flag2")
        self.d.delVarFlag("foo", "flag3")
        self.assertEqual(self.d.getVarFlag("foo", "flag1", False), "value of flag1")
        self.assertEqual(self.d.getVarFlag("foo", "flag2", False), None)
        self.assertDictEqual(
            self.d.getVarFlags("foo"),
            {
                "flag1": "value of flag1",
                "flagnovalue": "default of flagnovalue",
            }
        )
        self.assertDictEqual(
            self.d.getVarFlags("foo", internalflags=True),
            {
                "_content": "value of foo",
                "flag1": "value of flag1",
                "_defaultval_flag_flag1": "default of flag1",
                "_defaultval_flag_flagnovalue": "default of flagnovalue",
            }
        )

    def test_delvar(self):
        self.d.delVar("foo")
        self.assertEqual(self.d.getVarFlag("foo", "flag1", False), None)
        self.assertEqual(self.d.getVarFlag("foo", "flag2", False), None)
        self.assertEqual(self.d.getVarFlags("foo", internalflags=True), None)

class Contains(unittest.TestCase):
    def setUp(self):
        self.d = bb.data.init()
        self.d.setVar("SOMEFLAG", "a b c")

    def test_contains(self):
        self.assertTrue(bb.utils.contains("SOMEFLAG", "a", True, False, self.d))
        self.assertTrue(bb.utils.contains("SOMEFLAG", "b", True, False, self.d))
        self.assertTrue(bb.utils.contains("SOMEFLAG", "c", True, False, self.d))

        self.assertTrue(bb.utils.contains("SOMEFLAG", "a b", True, False, self.d))
        self.assertTrue(bb.utils.contains("SOMEFLAG", "b c", True, False, self.d))
        self.assertTrue(bb.utils.contains("SOMEFLAG", "c a", True, False, self.d))

        self.assertTrue(bb.utils.contains("SOMEFLAG", "a b c", True, False, self.d))
        self.assertTrue(bb.utils.contains("SOMEFLAG", "c b a", True, False, self.d))

        self.assertFalse(bb.utils.contains("SOMEFLAG", "x", True, False, self.d))
        self.assertFalse(bb.utils.contains("SOMEFLAG", "a x", True, False, self.d))
        self.assertFalse(bb.utils.contains("SOMEFLAG", "x c b", True, False, self.d))
        self.assertFalse(bb.utils.contains("SOMEFLAG", "x c b a", True, False, self.d))

    def test_contains_any(self):
        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "a", True, False, self.d))
        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "b", True, False, self.d))
        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "c", True, False, self.d))

        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "a b", True, False, self.d))
        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "b c", True, False, self.d))
        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "c a", True, False, self.d))

        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "a x", True, False, self.d))
        self.assertTrue(bb.utils.contains_any("SOMEFLAG", "x c", True, False, self.d))

        self.assertFalse(bb.utils.contains_any("SOMEFLAG", "x", True, False, self.d))
        self.assertFalse(bb.utils.contains_any("SOMEFLAG", "x y z", True, False, self.d))


class TaskHash(unittest.TestCase):
    def test_taskhashes(self):
        def gettask_bashhash(taskname, d):
            tasklist, gendeps, lookupcache = bb.data.generate_dependencies(d, set())
            taskdeps, basehash = bb.data.generate_dependency_hash(tasklist, gendeps, lookupcache, set(), "somefile")
            bb.warn(str(lookupcache))
            return basehash["somefile:" + taskname]

        d = bb.data.init()
        d.setVar("__BBTASKS", ["mytask"])
        d.setVar("__exportlist", [])
        d.setVar("mytask", "${MYCOMMAND}")
        d.setVar("MYCOMMAND", "${VAR}; foo; bar; exit 0")
        d.setVar("VAR", "val")
        orighash = gettask_bashhash("mytask", d)

        # Changing a variable should change the hash
        d.setVar("VAR", "val2")
        nexthash = gettask_bashhash("mytask", d)
        self.assertNotEqual(orighash, nexthash)

        d.setVar("VAR", "val")
        # Adding an inactive removal shouldn't change the hash
        d.setVar("BAR", "notbar")
        d.setVar("MYCOMMAND:remove", "${BAR}")
        nexthash = gettask_bashhash("mytask", d)
        self.assertEqual(orighash, nexthash)

        # Adding an active removal should change the hash
        d.setVar("BAR", "bar;")
        nexthash = gettask_bashhash("mytask", d)
        self.assertNotEqual(orighash, nexthash)

        # Setup an inactive contains()
        d.setVar("VAR", "${@bb.utils.contains('VAR2', 'A', 'val', '', d)}")
        orighash = gettask_bashhash("mytask", d)

        # Activate the contains() and the hash should change
        d.setVar("VAR2", "A")
        nexthash = gettask_bashhash("mytask", d)
        self.assertNotEqual(orighash, nexthash)

        # The contains should be inactive but even though VAR2 has a
        # different value the hash should match the original
        d.setVar("VAR2", "B")
        nexthash = gettask_bashhash("mytask", d)
        self.assertEqual(orighash, nexthash)

class Serialize(unittest.TestCase):

    def test_serialize(self):
        import tempfile
        import pickle
        d = bb.data.init()
        d.enableTracking()
        d.setVar('HELLO', 'world')
        d.setVarFlag('HELLO', 'other', 'planet')
        with tempfile.NamedTemporaryFile(delete=False) as tmpfile:
            tmpfilename = tmpfile.name
            pickle.dump(d, tmpfile)

        with open(tmpfilename, 'rb') as f:
            newd = pickle.load(f)

        os.remove(tmpfilename)

        self.assertEqual(d, newd)
        self.assertEqual(newd.getVar('HELLO'), 'world')
        self.assertEqual(newd.getVarFlag('HELLO', 'other'), 'planet')

class EmitVar(unittest.TestCase):
    def setUp(self):
        self.d = bb.data.init()

        self.d.setVar("foo", "value of foo")

        self.d.setVar("foo_exported", "value of foo_exported")
        self.d.setVarFlag("foo_exported", "export", "1")

        self.d.setVar("foo_unexported", "value of foo_unexported")
        self.d.setVarFlag("foo_unexported", "unexport", "1")

        self.d.setVar("test_func", "echo test_func_l1\necho test_func_l2")
        self.d.setVarFlag("test_func", "func", "1")

        self.d.setVar("bad_chars", 'a"b\nc`d\ne$f')

    @staticmethod
    def get_output(out):
        lines = [line for line in out.getvalue().splitlines()
                 if len(line) == 0 or line[0] != '#'
                 ]
        out.truncate(0)
        out.seek(0)
        return lines

    def test_simple_variable(self):
        out = io.StringIO()

        bb.data.emit_var('foo', out, self.d, all=True)
        self.assertEqual(self.get_output(out), ['foo="value of foo"'])

    def test_exported(self):
        out = io.StringIO()

        bb.data.emit_var('foo_exported', out, self.d)
        self.assertEqual(self.get_output(out),
                         ['export foo_exported="value of foo_exported"'])

    def test_unexported(self):
        out = io.StringIO()

        bb.data.emit_var('foo_unexported', out, self.d)
        self.assertEqual(self.get_output(out), ['unset foo_unexported'])

    def test_function(self):
        out = io.StringIO()

        bb.data.emit_var('test_func', out, self.d)
        self.assertEqual(self.get_output(out), ['test_func() {',
                                                'echo test_func_l1',
                                                'echo test_func_l2',
                                                '}'])

    def test_all(self):
        out = io.StringIO()

        bb.data.emit_var('foo', out, self.d, all=True)
        self.assertEqual(self.get_output(out), ['foo="value of foo"'])

        bb.data.emit_var('foo_exported', out, self.d, all=True)
        self.assertEqual(self.get_output(out),
                         ['export foo_exported="value of foo_exported"'])
        bb.data.emit_var('foo_unexported', out, self.d, all=True)

        self.assertEqual(self.get_output(out), ['unset foo_unexported'])

        bb.data.emit_var('test_func', out, self.d, all=True)
        self.assertEqual(self.get_output(out), ['test_func() {',
                                                'echo test_func_l1',
                                                'echo test_func_l2',
                                                '}'])

    def test_not_all(self):
        out = io.StringIO()

        bb.data.emit_var('foo', out, self.d)
        self.assertEqual(self.get_output(out), [])

        bb.data.emit_var('foo_exported', out, self.d)
        self.assertEqual(self.get_output(out),
                         ['export foo_exported="value of foo_exported"'])

        bb.data.emit_var('foo_unexported', out, self.d)
        self.assertEqual(self.get_output(out), ['unset foo_unexported'])

        bb.data.emit_var('test_func', out, self.d)
        self.assertEqual(self.get_output(out), ['test_func() {',
                                                'echo test_func_l1',
                                                'echo test_func_l2',
                                                '}'])

    def test_not_set(self):
        out = io.StringIO()

        bb.data.emit_var('random_name', out, self.d)
        self.assertEqual(self.get_output(out), [])

    def test_bad_chars(self):
        out = io.StringIO()

        bb.data.emit_var('bad_chars', out, self.d, all=True)
        self.assertEqual(self.get_output(out), ['bad_chars="a\\"b \\',
                                                'c\\`d \\',
                                                'e\\$f"'])
