Fix test failures caused by the fzf version (#49)

* Remove deprecated `version` in docker-compose.yml

* Refactor the magic number for `time.sleep`

* Update the tests for supporting latest fzf

docker-compose.yml

@@ -1,5 +1,3 @@
-version: "3.8"
-
 services:
   base: &base-spec
     build: .

tests/conftest.py

@@ -12,6 +12,7 @@
 SESSION_STARTUP_TIMEOUT = 15
 STARTUP_BANNER = b"GEP is running now!"
 GDB_HISTORY_NAME = ".gdb_history"
+TIME_INTERVAL = 1
 
 
 def run_with_screen_256color(
@@ -79,7 +80,7 @@ def start(self, gdb_args: list[str] | None = None, histories: list[str] = None)
         while time.time() - now < SESSION_STARTUP_TIMEOUT:
             if STARTUP_BANNER in self.capture_pane():
                 break
-            time.sleep(1)
+            time.sleep(TIME_INTERVAL)
         else:
             raise TimeoutError("GDB session did not start in time")
         self.clear_pane()
@@ -122,7 +123,7 @@ def send_literal(self, literal: str) -> None:
         :return: None
         """
         run_with_screen_256color(["tmux", "send-keys", "-l", "-t", self.session_name, literal])
-        time.sleep(1)
+        time.sleep(TIME_INTERVAL)
 
     @check_session_started
     def send_key(self, key: str) -> None:
@@ -133,7 +134,7 @@ def send_key(self, key: str) -> None:
         :return: None
         """
         run_with_screen_256color(["tmux", "send-keys", "-t", self.session_name, key])
-        time.sleep(1)
+        time.sleep(TIME_INTERVAL)
 
     @check_session_started
     def clear_pane(self) -> None:
@@ -144,7 +145,7 @@ def clear_pane(self) -> None:
         :rtype: None
         """
         run_with_screen_256color(["tmux", "send-keys", "-t", self.session_name, "C-l"])
-        time.sleep(1)
+        time.sleep(TIME_INTERVAL)
         run_with_screen_256color(["tmux", "clear-history", "-t", self.session_name])
 
     @check_session_started

tests/test_gep.py

@@ -1,5 +1,8 @@
 from conftest import GDBSession
 
+# TODO: Maybe a better way to handle this?
+FZF_POINTER = b"\xe2\x96\x8c"  # ▌
+
 
 def grey(b: bytes) -> bytes:
     """
@@ -57,7 +60,7 @@ def test_fzf_history_search(gdb_session: GDBSession) -> None:
     pane_content = gdb_session.capture_pane()
     assert b"> 11" in pane_content
     assert b"1/3" in pane_content
-    assert b"> print 11" in pane_content
+    assert FZF_POINTER + b" print 11" in pane_content
 
     # the selected history should be replaced in buffer
     gdb_session.send_key("Enter")