test: log: Convert log_test from python to C

When rebasing this series I had to renumber all my log tests because
someone made another log test in the meantime. This involved updaing a
number in several places (C and python), and it wasn't checked by the
compiler. So I though "how hard could it be to just rewrite in C?" And
though it wasn't hard, it *was* tedious. Tests are numbered the same as
before to allow for easier review.

A note that if a test fails, everything after it will probably also fail.
This is because that test won't clean up its filters.  There's no easy way
to do the cleanup, except perhaps removing all filters in a wrapper
function.

Signed-off-by: Sean Anderson <seanga2@gmail.com>

test/py/tests/test_log.py

@@ -10,110 +10,6 @@ and checks that the output is correct.
 
 import pytest
 
-LOGL_FIRST, LOGL_WARNING, LOGL_INFO = (0, 4, 6)
-
-@pytest.mark.buildconfigspec('cmd_log')
-def test_log(u_boot_console):
-    """Test that U-Boot logging works correctly."""
-    def check_log_entries(lines, mask, max_level=LOGL_INFO):
-        """Check that the expected log records appear in the output
-
-        Args:
-            lines: iterator containing lines to check
-            mask: bit mask to select which lines to check for:
-                bit 0: standard log line
-                bit 1: _log line
-            max_level: maximum log level to expect in the output
-        """
-        for i in range(max_level):
-            if mask & 1:
-                assert 'log_run() log %d' % i == next(lines)
-            if mask & 3:
-                assert 'func() _log %d' % i == next(lines)
-
-    def run_test(testnum):
-        """Run a particular test number (the 'log test' command)
-
-        Args:
-            testnum: Test number to run
-        Returns:
-            iterator containing the lines output from the command
-        """
-        output = u_boot_console.run_command('log format fm')
-        assert output == ''
-        with cons.log.section('basic'):
-           output = u_boot_console.run_command('log test %d' % testnum)
-        split = output.replace('\r', '').splitlines()
-        lines = iter(split)
-        assert 'test %d' % testnum == next(lines)
-        return lines
-
-    def test0():
-        lines = run_test(0)
-        check_log_entries(lines, 3)
-
-    def test1():
-        lines = run_test(1)
-        check_log_entries(lines, 3)
-
-    def test2():
-        lines = run_test(2)
-
-    def test3():
-        lines = run_test(3)
-        check_log_entries(lines, 2)
-
-    def test4():
-        lines = run_test(4)
-        assert next(lines, None) == None
-
-    def test5():
-        lines = run_test(5)
-        check_log_entries(lines, 2)
-
-    def test6():
-        lines = run_test(6)
-        check_log_entries(lines, 3)
-
-    def test7():
-        lines = run_test(7)
-        check_log_entries(lines, 3, LOGL_WARNING)
-
-    def test8():
-        lines = run_test(8)
-        check_log_entries(lines, 3)
-
-    def test9():
-        lines = run_test(9)
-        check_log_entries(lines, 3)
-
-    def test10():
-        lines = run_test(10)
-        for i in range(7):
-            assert 'log_test() level %d' % i == next(lines)
-
-    def test11():
-        """Test use of log_device_set_enable()"""
-        lines = run_test(11)
-        assert 'log_test() default'
-        # disabled should not be displayed
-        assert 'log_test() enabled'
-
-    # TODO(sjg@chromium.org): Consider structuring this as separate tests
-    cons = u_boot_console
-    test0()
-    test1()
-    test2()
-    test3()
-    test4()
-    test5()
-    test6()
-    test7()
-    test8()
-    test9()
-    test10()
-    test11()
-
 @pytest.mark.buildconfigspec('cmd_log')
 def test_log_format(u_boot_console):
     """Test the 'log format' and 'log rec' commands"""