Add missing simpletable and simpletable tests for failed merge

2 files changed, 162 insertions, 0 deletions

diff --git a/cloudinit/simpletable.py b/cloudinit/simpletable.py
new file mode 100644
index 00000000..90603228
--- /dev/null
+++ b/cloudinit/simpletable.py
@@ -0,0 +1,62 @@
+# Copyright (C) 2017 Amazon.com, Inc. or its affiliates
+#
+# Author: Ethan Faust <efaust@amazon.com>
+# Author: Andrew Jorgensen <ajorgens@amazon.com>
+#
+# This file is part of cloud-init. See LICENSE file for license information.
+
+
+class SimpleTable(object):
+    """A minimal implementation of PrettyTable
+    for distribution with cloud-init.
+    """
+
+    def __init__(self, fields):
+        self.fields = fields
+        self.rows = []
+
+        # initialize list of 0s the same length
+        # as the number of fields
+        self.column_widths = [0] * len(self.fields)
+        self.update_column_widths(fields)
+
+    def update_column_widths(self, values):
+        for i, value in enumerate(values):
+            self.column_widths[i] = max(
+                len(value),
+                self.column_widths[i])
+
+    def add_row(self, values):
+        if len(values) > len(self.fields):
+            raise TypeError('too many values')
+        values = [str(value) for value in values]
+        self.rows.append(values)
+        self.update_column_widths(values)
+
+    def _hdiv(self):
+        """Returns a horizontal divider for the table."""
+        return '+' + '+'.join(
+            ['-' * (w + 2) for w in self.column_widths]) + '+'
+
+    def _row(self, row):
+        """Returns a formatted row."""
+        return '|' + '|'.join(
+            [col.center(self.column_widths[i] + 2)
+                for i, col in enumerate(row)]) + '|'
+
+    def __str__(self):
+        """Returns a string representation of the table with lines around.
+
+        +-----+-----+
+        | one | two |
+        +-----+-----+
+        |  1  |  2  |
+        |  01 |  10 |
+        +-----+-----+
+        """
+        lines = [self._hdiv(), self._row(self.fields), self._hdiv()]
+        lines += [self._row(r) for r in self.rows] + [self._hdiv()]
+        return '\n'.join(lines)
+
+    def get_string(self):
+        return repr(self)
diff --git a/cloudinit/tests/test_simpletable.py b/cloudinit/tests/test_simpletable.py
new file mode 100644
index 00000000..96bc24cf
--- /dev/null
+++ b/cloudinit/tests/test_simpletable.py
@@ -0,0 +1,100 @@
+# Copyright (C) 2017 Amazon.com, Inc. or its affiliates
+#
+# Author: Andrew Jorgensen <ajorgens@amazon.com>
+#
+# This file is part of cloud-init. See LICENSE file for license information.
+"""Tests that SimpleTable works just like PrettyTable for cloud-init.
+
+Not all possible PrettyTable cases are tested because we're not trying to
+reimplement the entire library, only the minimal parts we actually use.
+"""
+
+from cloudinit.simpletable import SimpleTable
+from cloudinit.tests.helpers import CiTestCase
+
+# Examples rendered by cloud-init using PrettyTable
+NET_DEVICE_FIELDS = (
+    'Device', 'Up', 'Address', 'Mask', 'Scope', 'Hw-Address')
+NET_DEVICE_ROWS = (
+    ('ens3', True, '172.31.4.203', '255.255.240.0', '.', '0a:1f:07:15:98:70'),
+    ('ens3', True, 'fe80::81f:7ff:fe15:9870/64', '.', 'link',
+        '0a:1f:07:15:98:70'),
+    ('lo', True, '127.0.0.1', '255.0.0.0', '.', '.'),
+    ('lo', True, '::1/128', '.', 'host', '.'),
+)
+NET_DEVICE_TABLE = """\
++--------+------+----------------------------+---------------+-------+-------------------+
+| Device |  Up  |          Address           |      Mask     | Scope |     Hw-Address    |
++--------+------+----------------------------+---------------+-------+-------------------+
+|  ens3  | True |        172.31.4.203        | 255.255.240.0 |   .   | 0a:1f:07:15:98:70 |
+|  ens3  | True | fe80::81f:7ff:fe15:9870/64 |       .       |  link | 0a:1f:07:15:98:70 |
+|   lo   | True |         127.0.0.1          |   255.0.0.0   |   .   |         .         |
+|   lo   | True |          ::1/128           |       .       |  host |         .         |
++--------+------+----------------------------+---------------+-------+-------------------+"""  # noqa: E501
+ROUTE_IPV4_FIELDS = (
+    'Route', 'Destination', 'Gateway', 'Genmask', 'Interface', 'Flags')
+ROUTE_IPV4_ROWS = (
+    ('0', '0.0.0.0', '172.31.0.1', '0.0.0.0', 'ens3', 'UG'),
+    ('1', '169.254.0.0', '0.0.0.0', '255.255.0.0', 'ens3', 'U'),
+    ('2', '172.31.0.0', '0.0.0.0', '255.255.240.0', 'ens3', 'U'),
+)
+ROUTE_IPV4_TABLE = """\
++-------+-------------+------------+---------------+-----------+-------+
+| Route | Destination |  Gateway   |    Genmask    | Interface | Flags |
++-------+-------------+------------+---------------+-----------+-------+
+|   0   |   0.0.0.0   | 172.31.0.1 |    0.0.0.0    |    ens3   |   UG  |
+|   1   | 169.254.0.0 |  0.0.0.0   |  255.255.0.0  |    ens3   |   U   |
+|   2   |  172.31.0.0 |  0.0.0.0   | 255.255.240.0 |    ens3   |   U   |
++-------+-------------+------------+---------------+-----------+-------+"""
+
+AUTHORIZED_KEYS_FIELDS = (
+    'Keytype', 'Fingerprint (md5)', 'Options', 'Comment')
+AUTHORIZED_KEYS_ROWS = (
+    ('ssh-rsa', '24:c7:41:49:47:12:31:a0:de:6f:62:79:9b:13:06:36', '-',
+        'ajorgens'),
+)
+AUTHORIZED_KEYS_TABLE = """\
++---------+-------------------------------------------------+---------+----------+
+| Keytype |                Fingerprint (md5)                | Options | Comment  |
++---------+-------------------------------------------------+---------+----------+
+| ssh-rsa | 24:c7:41:49:47:12:31:a0:de:6f:62:79:9b:13:06:36 |    -    | ajorgens |
++---------+-------------------------------------------------+---------+----------+"""  # noqa: E501
+
+# from prettytable import PrettyTable
+# pt = PrettyTable(('HEADER',))
+# print(pt)
+NO_ROWS_FIELDS = ('HEADER',)
+NO_ROWS_TABLE = """\
++--------+
+| HEADER |
++--------+
++--------+"""
+
+
+class TestSimpleTable(CiTestCase):
+
+    def test_no_rows(self):
+        """An empty table is rendered as PrettyTable would have done it."""
+        table = SimpleTable(NO_ROWS_FIELDS)
+        self.assertEqual(str(table), NO_ROWS_TABLE)
+
+    def test_net_dev(self):
+        """Net device info is rendered as it was with PrettyTable."""
+        table = SimpleTable(NET_DEVICE_FIELDS)
+        for row in NET_DEVICE_ROWS:
+            table.add_row(row)
+        self.assertEqual(str(table), NET_DEVICE_TABLE)
+
+    def test_route_ipv4(self):
+        """Route IPv4 info is rendered as it was with PrettyTable."""
+        table = SimpleTable(ROUTE_IPV4_FIELDS)
+        for row in ROUTE_IPV4_ROWS:
+            table.add_row(row)
+        self.assertEqual(str(table), ROUTE_IPV4_TABLE)
+
+    def test_authorized_keys(self):
+        """SSH authorized keys are rendered as they were with PrettyTable."""
+        table = SimpleTable(AUTHORIZED_KEYS_FIELDS)
+        for row in AUTHORIZED_KEYS_ROWS:
+            table.add_row(row)
+        self.assertEqual(str(table), AUTHORIZED_KEYS_TABLE)