Implement finding files from relative paths FileManager

tfw/components/ide/file_manager/file_manager.py

@@ -1,7 +1,10 @@
+import logging
 from functools import wraps
 from glob import glob
 from fnmatch import fnmatchcase
-from os.path import dirname, isdir, isfile, realpath
+from os.path import dirname, isdir, isfile, realpath, isabs
+
+LOG = logging.getLogger(__name__)
 
 
 def _with_is_allowed(func):
@@ -45,6 +48,13 @@ class FileManager: # pylint: disable=too-many-instance-attributes
             for pattern in self.patterns
         )
 
+    def find_file(self, filename):
+        if not isabs(filename):
+            for filepath in self.files:
+                if filepath.endswith(filename):
+                    return filepath
+        return filename
+
     @_with_is_allowed
     def read_file(self, filepath): # pylint: disable=no-self-use
         with open(filepath, 'rb', buffering=0) as ifile:

tfw/components/ide/file_manager/test_file_manager.py

@@ -2,7 +2,7 @@
 from dataclasses import dataclass
 from secrets import token_urlsafe
 from os import mkdir, symlink
-from os.path import join, realpath
+from os.path import join, realpath, basename
 from pathlib import Path
 from tempfile import TemporaryDirectory
 
@@ -86,3 +86,9 @@ def test_regular_ide_actions(context):
         context.manager.write_file(newfile2, content2)
         assert context.manager.read_file(newfile1) == content1
         assert context.manager.read_file(newfile2) == content2
+
+def test_find_file(context):
+    for _ in range(5):
+        file_abs = context.create_random_file(context.subdir, '.txt')
+        file_base = basename(file_abs)
+        assert context.manager.find_file(file_base) == file_abs