Revert test deletion in "tools: deprecate regexp functions"

This partially reverts commit 1f4df30.

test/test_tools.py

@@ -5,6 +5,8 @@
 from datetime import timedelta
 import re
 
+import pytest
+
 from sopel import tools
 from sopel.tools.time import seconds_to_human
 
@@ -16,6 +18,88 @@
 """
 
 
+@pytest.fixture
+def nick():
+    return 'Sopel'
+
+
+@pytest.fixture
+def alias_nicks():
+    return ['Soap', 'Pie']
+
+
+@pytest.fixture
+def prefix():
+    return '.'
+
+
+@pytest.fixture
+def prefix_regex():
+    re.escape(prefix())
+
+
+@pytest.fixture
+def command():
+    return 'testcmd'
+
+
+@pytest.fixture
+def groups(command):
+    return {
+        3: "three",
+        4: "four",
+        5: "five",
+        6: "six",
+    }
+
+
+@pytest.fixture
+def command_line(prefix, command, groups):
+    return "{}{} {}".format(prefix, command, ' '.join(groups.values()))
+
+
+@pytest.fixture
+def nickname_command_line(nick, command, groups):
+    return "{}: {} {}".format(nick, command, ' '.join(groups.values()))
+
+
+def test_command_groups(prefix, command, groups, command_line):
+    regex = tools.get_command_regexp(prefix, command)
+    match = re.match(regex, command_line)
+    assert match.group(0) == command_line
+    assert match.group(1) == command
+    assert match.group(2) == ' '.join(groups.values())
+    assert match.group(3) == groups[3]
+    assert match.group(4) == groups[4]
+    assert match.group(5) == groups[5]
+    assert match.group(6) == groups[6]
+
+
+def test_nickname_command_groups(command, nick, groups, nickname_command_line):
+    regex = tools.get_nickname_command_regexp(nick, command, [])
+    match = re.match(regex, nickname_command_line)
+    assert match.group(0) == nickname_command_line
+    assert match.group(1) == command
+    assert match.group(2) == ' '.join(groups.values())
+    assert match.group(3) == groups[3]
+    assert match.group(4) == groups[4]
+    assert match.group(5) == groups[5]
+    assert match.group(6) == groups[6]
+
+
+def test_nickname_command_aliased(command, nick, alias_nicks, groups, nickname_command_line):
+    aliased_command_line = nickname_command_line.replace(nick, alias_nicks[0])
+    regex = tools.get_nickname_command_regexp(nick, command, alias_nicks)
+    match = re.match(regex, aliased_command_line)
+    assert match.group(0) == aliased_command_line
+    assert match.group(1) == command
+    assert match.group(2) == ' '.join(groups.values())
+    assert match.group(3) == groups[3]
+    assert match.group(4) == groups[4]
+    assert match.group(5) == groups[5]
+    assert match.group(6) == groups[6]
+
+
 def test_get_sendable_message_default():
     initial = 'aaaa'
     text, excess = tools.get_sendable_message(initial)