[command][cache path] Raising error if folder path does not exist

conan/cli/commands/cache.py

@@ -1,3 +1,5 @@
+import os.path
+
 from conan.api.conan_api import ConanAPI
 from conan.api.model import ListPattern, MultiPackagesList
 from conan.api.output import cli_out_write
@@ -46,6 +48,8 @@ def cache_path(conan_api: ConanAPI, parser, subparser, *args):
             path = conan_api.cache.recipe_metadata_path(ref)
         else:
             raise ConanException(f"'--folder {args.folder}' requires a valid package reference")
+        if args.folder and not os.path.exists(path):
+            raise ConanException(f"'{args.folder}' folder does not exist for the reference {ref}")
     else:
         if args.folder is None:
             path = conan_api.cache.package_path(pref)
@@ -55,6 +59,9 @@ def cache_path(conan_api: ConanAPI, parser, subparser, *args):
             path = conan_api.cache.package_metadata_path(pref)
         else:
             raise ConanException(f"'--folder {args.folder}' requires a recipe reference")
+        if args.folder and not os.path.exists(path):
+            raise ConanException(f"'{args.folder}' folder does not exist for the package reference "
+                                 f"{pref}")
     return path
 
 

conans/test/integration/command_v2/test_cache_path.py

@@ -97,3 +97,17 @@ def test_cache_path_arg_errors():
     # source, cannot obtain build without pref
     t.run("cache path foo/1.0:pid --folder source", assert_error=True)
     assert "ERROR: '--folder source' requires a recipe reference" in t.out
+
+
+def test_cache_path_does_not_exist_folder():
+    client = TestClient(default_server_user=True)
+    conanfile = GenConanfile()
+    client.save({"conanfile.py": conanfile})
+    client.run("create . --name=mypkg --version=0.1")
+    pref = client.created_package_reference("mypkg/0.1")
+    client.run("upload * --confirm -r default")
+    client.run("remove * -c")
+
+    client.run(f"install --requires mypkg/0.1")
+    client.run(f"cache path {pref} --folder build", assert_error=True)
+    assert f"ERROR: 'build' folder does not exist for the package reference {pref}" in client.out

conans/test/integration/metadata/test_metadata_commands.py

@@ -30,7 +30,6 @@ def test_upload(self, create_conan_pkg):
         # Add some metadata
         self.save_metadata_file(c, "pkg/0.1", "mylogs.txt")
         self.save_metadata_file(c, f"pkg/0.1:{pid}", "mybuildlogs.txt")
-
         # Now upload everything
         c.run("upload * -c -r=default")
         assert "pkg/0.1: Recipe metadata: 1 files" in c.out
@@ -47,15 +46,17 @@ def test_upload(self, create_conan_pkg):
 
         c.run("remove * -c")
         c.run("install --requires=pkg/0.1")  # wont install metadata by default
-        c.run("cache path pkg/0.1 --folder=metadata")
-        metadata_path = str(c.stdout).strip()
-        c.run(f"cache path pkg/0.1:{pid} --folder=metadata")
-        pkg_metadata_path = str(c.stdout).strip()
-        assert not os.path.exists(metadata_path)
-        assert not os.path.exists(pkg_metadata_path)
+        c.run("cache path pkg/0.1 --folder=metadata", assert_error=True)
+        assert "'metadata' folder does not exist for the reference pkg/0.1" in c.out
+        c.run(f"cache path pkg/0.1:{pid} --folder=metadata", assert_error=True)
+        assert f"'metadata' folder does not exist for the package reference pkg/0.1:{pid}" in c.out
 
         # Forcing the download of the metadata of cache-existing things with the "download" command
         c.run("download pkg/0.1 -r=default --metadata=*")
+        c.run(f"cache path pkg/0.1 --folder=metadata")
+        metadata_path = str(c.stdout).strip()
+        c.run(f"cache path pkg/0.1:{pid} --folder=metadata")
+        pkg_metadata_path = str(c.stdout).strip()
         for f in "logs/mylogs.txt", "logs/mylogs2.txt":
             assert os.path.isfile(os.path.join(metadata_path, f))
         for f in "logs/mybuildlogs.txt", "logs/mybuildlogs2.txt":