From 0972cb9987393e245717cb922932217fb58471a0 Mon Sep 17 00:00:00 2001
From: Branch Vincent <branchevincent@gmail.com>
Date: Sun, 27 Feb 2022 01:01:06 -0500
Subject: [PATCH] fix(run): improve error when command not found

---
 src/poetry/console/commands/run.py |  6 +++++-
 tests/console/commands/test_run.py | 11 +++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/poetry/console/commands/run.py b/src/poetry/console/commands/run.py
index 9a02e375125..071909d0fb0 100644
--- a/src/poetry/console/commands/run.py
+++ b/src/poetry/console/commands/run.py
@@ -29,7 +29,11 @@ def handle(self) -> Any:
         if scripts and script in scripts:
             return self.run_script(scripts[script], args)
 
-        return self.env.execute(*args)
+        try:
+            return self.env.execute(*args)
+        except FileNotFoundError:
+            self.line_error(f"<error>Command not found: <c1>{script}</c1></error>")
+            return 1
 
     @property
     def _module(self) -> "Module":
diff --git a/tests/console/commands/test_run.py b/tests/console/commands/test_run.py
index d71e35fbd57..1f062984d68 100644
--- a/tests/console/commands/test_run.py
+++ b/tests/console/commands/test_run.py
@@ -37,3 +37,14 @@ def test_run_keeps_options_passed_before_command(
         app_tester.application.long_version + "\n"
     )
     assert [] == env.executed
+
+
+def test_run_has_helpful_error_when_command_not_found(
+    app_tester: "ApplicationTester", env: "MockEnv"
+):
+    env._execute = True
+    app_tester.execute("run nonexistent-command")
+
+    assert env.executed == [["nonexistent-command"]]
+    assert app_tester.status_code == 1
+    assert app_tester.io.fetch_error() == "Command not found: nonexistent-command\n"