Tests for simple suffix

Summary:
# Bug Description
Watchman would return with missing path components
S468253

# This Diff
Adds tests for relative root path evaluation

Reviewed By: jdelliot

Differential Revision: D65908843

fbshipit-source-id: c62c60eda0a324731a94e68b518468d8011e91b8

Author: Chris Dinh

watchman/integration/eden/test_eden_suffix.py

@@ -0,0 +1,89 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+
+# pyre-unsafe
+
+from watchman.integration.lib import WatchmanEdenTestCase
+
+
+def populate(repo) -> None:
+    # We ignore ".hg" here just so some of the tests that list files don't have to
+    # explicitly filter out the contents of this directory.  However, in most situations
+    # the .hg directory normally should not be ignored.
+    repo.write_file(".watchmanconfig", '{"ignore_dirs":[".hg"]}')
+
+    # Create multiple nested directories to test the relative_root option
+    repo.write_file("foo.c", "1\n")
+    repo.write_file("subdir/bar.c", "1\n")
+    repo.write_file("subdir/bar.h", "1\n")
+    repo.write_file("subdir/subdir2/baz.c", "1\n")
+    repo.write_file("subdir/subdir2/baz.h", "1\n")
+    repo.write_file("subdir/subdir2/subdir3/baz.c", "1\n")
+
+    repo.commit("initial commit.")
+
+
+class TestEdenQuery(WatchmanEdenTestCase.WatchmanEdenTestCase):
+    def test_simple_suffix(self) -> None:
+        root = self.makeEdenMount(populate)
+        self.watchmanCommand("watch", root)
+
+        # Test each permutation of relative root
+        relative_roots = ["", "subdir", "subdir/subdir2", "subdir/subdir2/subdir3"]
+        expected_output = [
+            [
+                "foo.c",
+                "subdir/bar.c",
+                "subdir/subdir2/baz.c",
+                "subdir/subdir2/subdir3/baz.c",
+            ],
+            [
+                "bar.c",
+                "subdir2/baz.c",
+                "subdir2/subdir3/baz.c",
+            ],
+            [
+                "baz.c",
+                "subdir3/baz.c",
+            ],
+            [
+                "baz.c",
+            ],
+        ]
+        for relative_root, output in zip(relative_roots, expected_output):
+            # Test Simple suffix eval
+            self.assertFileListsEqual(
+                self.watchmanCommand(
+                    "query",
+                    root,
+                    {
+                        "relative_root": relative_root,
+                        "expression": ["allof", ["type", "f"], ["suffix", ["c"]]],
+                        "fields": ["name"],
+                    },
+                )["files"],
+                output,
+            )
+
+            # Check that it is the same as normal suffix eval
+            self.assertFileListsEqual(
+                self.watchmanCommand(
+                    "query",
+                    root,
+                    {
+                        "relative_root": relative_root,
+                        "expression": [
+                            "allof",
+                            # Adding a true expression causes watchman to
+                            # evaluate this normally instead of as a simple suffix
+                            ["true"],
+                            ["type", "f"],
+                            ["suffix", ["c"]],
+                        ],
+                        "fields": ["name"],
+                    },
+                )["files"],
+                output,
+            )