Add tests for CompileCommand class

- Test that command and arguments fields are handled correctly.
- Test that we can identify which commands we can/should emulate.

Signed-off-by: John Pennycook <john.pennycook@intel.com>

Author: Pennycook

tests/compile-command/__init__.py

@@ -0,0 +1,2 @@
+# Copyright (C) 2019-2024 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause

tests/compile-command/test_compile_command.py

@@ -0,0 +1,70 @@
+# Copyright (C) 2019-2024 Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+
+import unittest
+
+from codebasin import CompileCommand
+
+
+class TestCompileCommand(unittest.TestCase):
+    """
+    Test CompileCommand class.
+    """
+
+    def test_commands_and_arguments(self):
+        """Check commands and arguments are not both None"""
+
+        with self.assertRaises(ValueError):
+            CompileCommand("file.cpp", command=None, arguments=None)
+
+        with self.assertRaises(ValueError):
+            instance = {
+                "file": "file.cpp",
+            }
+            CompileCommand.from_json(instance)
+
+    def test_command_to_arguments(self):
+        """Check commands convert to arguments"""
+        command = CompileCommand("file.cpp", command="c++ file.cpp")
+        self.assertEqual(command.arguments, ["c++", "file.cpp"])
+
+        instance = {
+            "file": "file.cpp",
+            "command": "c++ file.cpp",
+        }
+        command = CompileCommand.from_json(instance)
+        self.assertEqual(command.arguments, ["c++", "file.cpp"])
+
+    def test_arguments_to_command(self):
+        """Check arguments convert to command"""
+        command = CompileCommand("file.cpp", arguments=["c++", "file.cpp"])
+        self.assertEqual(str(command), "c++ file.cpp")
+
+        instance = {
+            "file": "file.cpp",
+            "arguments": [
+                "c++",
+                "file.cpp",
+            ],
+        }
+        command = CompileCommand.from_json(instance)
+        self.assertEqual(str(command), "c++ file.cpp")
+
+    def test_empty_command(self):
+        """Check empty commands are not supported"""
+        command = CompileCommand("file.cpp", command="")
+        self.assertFalse(command.is_supported())
+
+    def test_link_command(self):
+        """Check link commands are not supported"""
+        command = CompileCommand("file.o", command="c++ -o a.out file.o")
+        self.assertFalse(command.is_supported())
+
+    def test_valid_command(self):
+        """Check valid commands are supported"""
+        command = CompileCommand("file.cpp", command="c++ file.cpp")
+        self.assertTrue(command.is_supported())
+
+
+if __name__ == "__main__":
+    unittest.main()