diff --git a/tests/test_parser.py b/tests/test_parser.py
index 35f428f..66449db 100644
--- a/tests/test_parser.py
+++ b/tests/test_parser.py
@@ -1,7 +1,6 @@
 """Tests for the rewritten PineScript v6 parser (Tasks 5 & 6)."""
 
-import glob
-import os
+import functools
 import re
 
 import pytest
@@ -9,6 +8,7 @@
 from pineforge_codegen.lexer import Lexer
 from pineforge_codegen.parser import Parser
 from pineforge_codegen.ast_nodes import *
+from tests._e2e import engine_root
 
 
 def _parse_expr(src: str):
@@ -344,11 +344,49 @@ def test_parse_series_float_param_single_name():
     assert fd.params == ["src", "fast"]
 
 
-BASIC_STRATEGIES = sorted(glob.glob("pineforge-engine/corpus/basic/*/strategy.pine"))
-
-
-@pytest.mark.parametrize("pine_file", BASIC_STRATEGIES,
-                         ids=[os.path.basename(os.path.dirname(p)) for p in BASIC_STRATEGIES])
+# The strategies to parse are the paired engine's corpus, found from the engine
+# checkout the suite already resolves (tests/_e2e.py engine_root():
+# PINEFORGE_ENGINE_INCLUDE, else a sibling checkout), never from the working
+# directory: a glob against it matched nothing wherever pytest started outside a
+# directory holding a `pineforge-engine` checkout, and pytest reported the empty
+# parameter set as one silent skip. The public corpus keeps its verified
+# strategies under `corpus/validation/` (the `corpus/basic/` this test is named
+# for went with the private-era layout). No engine checkout is the one skip; an
+# engine checkout with no strategy there (corpus submodule not initialised, a
+# renamed bucket) is one failing case, naming the path.
+# The bucket is `validation` because it holds the corpus's 312 verified strategies (corpus README); `draft-probes/` are staged probes, not verified strategies, so they are not parsed here (the compile sweep covers them).
+_CORPUS_BUCKET = "validation"
+_ENGINE_ROOT = engine_root()
+_CORPUS_DIR = None if _ENGINE_ROOT is None else _ENGINE_ROOT / "corpus" / _CORPUS_BUCKET
+BASIC_STRATEGIES = [] if _CORPUS_DIR is None else sorted(_CORPUS_DIR.glob("*/strategy.pine"))
+
+if _CORPUS_DIR is None:
+    _BASIC_PARAMS = [pytest.param(None, id="no-engine-checkout", marks=pytest.mark.skip(
+        reason="no engine checkout: PINEFORGE_ENGINE_INCLUDE is not set or invalid "
+               "and no sibling pineforge-engine was found; point it at "
+               "pineforge-engine/include to parse the engine corpus"))]
+elif not BASIC_STRATEGIES:
+    _BASIC_PARAMS = [pytest.param(None, id="corpus-missing")]
+else:
+    _BASIC_PARAMS = [pytest.param(str(p), id=p.parent.name) for p in BASIC_STRATEGIES]
+
+
+def _fails_without_corpus(test):
+    """Run ``test``, but fail the case that stands for a corpus holding no strategy."""
+    @functools.wraps(test)
+    def run(pine_file):
+        if pine_file is None:
+            pytest.fail(
+                f"no strategy.pine under {_CORPUS_DIR}/*/: the engine checkout at "
+                f"{_ENGINE_ROOT} has no corpus to parse (corpus submodule not "
+                "initialised? `git submodule update --init corpus` in it)",
+                pytrace=False)
+        return test(pine_file)
+    return run
+
+
+@pytest.mark.parametrize("pine_file", _BASIC_PARAMS)
+@_fails_without_corpus
 def test_parse_basic_strategy(pine_file):
     """Parse each basic strategy without errors."""
     src = open(pine_file).read()
diff --git a/tests/test_parser_corpus_collection.py b/tests/test_parser_corpus_collection.py
new file mode 100644
index 0000000..b5d6983
--- /dev/null
+++ b/tests/test_parser_corpus_collection.py
@@ -0,0 +1,160 @@
+"""``test_parse_basic_strategy`` finds the engine's corpus from the engine checkout.
+
+It used to glob ``pineforge-engine/corpus/basic/*/strategy.pine`` against the
+process's working directory, so a run started anywhere but a directory holding a
+``pineforge-engine`` checkout collected no case, and pytest reported the empty
+parameter set as one skip (the 1.5.0 proof's
+``tests/test_parser.py::test_parse_basic_strategy[NOTSET]`` row). It now takes the
+corpus from the engine checkout the suite already resolves
+(``tests/_e2e.py:engine_root()``: ``PINEFORGE_ENGINE_INCLUDE``, else a sibling
+checkout), and an engine checkout that holds no strategy is a failure.
+
+Driven from outside, the way a verification kit runs it: pytest itself, in a
+subprocess started from different working directories against a throwaway
+engine checkout, so every outcome is read off pytest's own report. The
+checkout is only what ``tests/_compile.py`` accepts as one
+(``include/pineforge/engine.hpp``) plus the strategies under ``corpus/``.
+"""
+
+from __future__ import annotations
+
+import os
+import subprocess
+import sys
+from pathlib import Path
+
+import pytest
+
+REPO_ROOT = Path(__file__).resolve().parent.parent
+TEST_PARSER = REPO_ROOT / "tests" / "test_parser.py"
+TEST_NAME = "test_parse_basic_strategy"
+# The public corpus keeps every verified strategy under corpus/validation/; the
+# corpus/basic/ of the private-era layout is not in the paired engine.
+BUCKET = "validation"
+
+GOOD = '//@version=6\nstrategy("probe", overlay=true)\nup = close > open\n'
+BROKEN = 'strategy("probe"\n'
+
+
+def _write(path: Path, text: str = GOOD) -> Path:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_text(text)
+    return path
+
+
+def _engine(base: Path) -> Path:
+    """A throwaway engine checkout with no corpus yet."""
+    root = base / "pineforge-engine"
+    _write(root / "include" / "pineforge" / "engine.hpp", "// stub\n")
+    return root
+
+
+def _corpus(root: Path, names, *, bucket: str = BUCKET, source: str = GOOD) -> None:
+    for name in names:
+        _write(root / "corpus" / bucket / name / "strategy.pine", source)
+
+
+def _pytest(*args: str, cwd: Path, include: Path | None) -> subprocess.CompletedProcess:
+    """This module's pytest over ``tests/test_parser.py``'s basic-strategy test,
+    started in ``cwd`` with ``PINEFORGE_ENGINE_INCLUDE`` = ``include`` (unset for
+    None) and nothing else of the outer run's pytest or engine environment."""
+    env = {k: v for k, v in os.environ.items()
+           if not k.startswith("PYTEST_")
+           and k not in ("PINEFORGE_ENGINE_INCLUDE", "PINEFORGE_ENGINE_CORPUS")}
+    if include is not None:
+        env["PINEFORGE_ENGINE_INCLUDE"] = str(include)
+    return subprocess.run(
+        [sys.executable, "-m", "pytest", "-p", "no:cacheprovider", "-o", "addopts=",
+         "--rootdir", str(REPO_ROOT), str(TEST_PARSER), "-k", TEST_NAME, "-q", *args],
+        cwd=cwd, env=env, capture_output=True, text=True, timeout=300)
+
+
+def _collected(cwd: Path, include: Path) -> list[str]:
+    proc = _pytest("--collect-only", cwd=cwd, include=include)
+    assert proc.returncode == 0, proc.stdout + proc.stderr
+    prefix = f"{TEST_NAME}["
+    return [line.split(prefix, 1)[1].rstrip("]")
+            for line in proc.stdout.splitlines() if prefix in line]
+
+
+@pytest.mark.parametrize("names", [
+    ["solo"],
+    ["c-third", "a-first", "b-second"],
+    [f"s{i:02d}" for i in range(17, 0, -1)],
+], ids=["one", "three", "seventeen"])
+def test_collects_exactly_the_engine_corpus_from_any_directory(tmp_path, names):
+    engine = _engine(tmp_path / "workspace")
+    _corpus(engine, names)
+    # Not strategies of the corpus bucket: a directory with no strategy.pine, one
+    # level deeper, and another bucket.
+    (engine / "corpus" / BUCKET / "no-strategy-here").mkdir()
+    _corpus(engine, ["nested-one"], bucket=f"{BUCKET}/group")
+    _corpus(engine, ["draft-one"], bucket="draft-probes")
+    # A working directory that holds the layout the old glob read, and the
+    # corpus bucket's: neither may be taken in the engine's place.
+    decoy = tmp_path / "decoy"
+    _corpus(decoy / "pineforge-engine", ["decoy-basic"], bucket="basic")
+    _corpus(decoy / "pineforge-engine", ["decoy-bucket"])
+    unrelated = tmp_path / "unrelated"
+    unrelated.mkdir()
+
+    expected = sorted(names)
+    for cwd in (REPO_ROOT, unrelated, decoy):
+        assert _collected(cwd, engine / "include") == expected, f"started in {cwd}"
+
+
+def test_every_collected_case_parses_its_strategy(tmp_path):
+    engine = _engine(tmp_path)
+    _corpus(engine, ["good-a", "good-b", "good-c"])
+    proc = _pytest(cwd=tmp_path, include=engine / "include")
+    assert proc.returncode == 0, proc.stdout + proc.stderr
+    assert "3 passed" in proc.stdout
+
+    _corpus(engine, ["broken-one"], source=BROKEN)
+    proc = _pytest("-rf", cwd=tmp_path, include=engine / "include")
+    assert proc.returncode == 1
+    assert "1 failed, 3 passed" in proc.stdout
+    assert f"{TEST_NAME}[broken-one]" in proc.stdout
+
+
+@pytest.mark.parametrize("layout", [
+    "no corpus directory",
+    "corpus directory with nothing in it",
+    "corpus bucket with nothing in it",
+    "corpus bucket whose directories hold no strategy.pine",
+    "strategies in another bucket only",
+])
+def test_engine_without_corpus_strategies_fails_naming_the_path(tmp_path, layout):
+    engine = _engine(tmp_path)
+    corpus = engine / "corpus"
+    if layout != "no corpus directory":
+        corpus.mkdir()
+    if layout == "corpus bucket with nothing in it":
+        (corpus / BUCKET).mkdir()
+    if layout == "corpus bucket whose directories hold no strategy.pine":
+        _write(corpus / BUCKET / "probe-01" / "engine_trades.csv", "a,b\n")
+    if layout == "strategies in another bucket only":
+        _corpus(engine, ["draft-one"], bucket="draft-probes")
+
+    proc = _pytest("-rs", cwd=tmp_path, include=engine / "include")
+    assert proc.returncode == 1, proc.stdout + proc.stderr
+    assert "1 failed" in proc.stdout
+    assert "passed" not in proc.stdout and "skipped" not in proc.stdout
+    assert str((corpus / BUCKET).resolve()) in proc.stdout
+
+
+@pytest.mark.parametrize("include", [
+    "an include directory that does not exist",
+    "a directory that is no engine include",
+])
+def test_no_engine_checkout_is_one_visible_skip_with_a_reason(tmp_path, include):
+    # tests/_compile.py reads a set PINEFORGE_ENGINE_INCLUDE that names no engine
+    # include as no engine at all, as an unset one beside no sibling checkout.
+    path = tmp_path / "missing" / "include"
+    if include.startswith("a directory"):
+        path.mkdir(parents=True)
+    proc = _pytest("-rs", cwd=tmp_path, include=path)
+    assert proc.returncode == 0, proc.stdout + proc.stderr
+    assert "1 skipped" in proc.stdout
+    assert "failed" not in proc.stdout and "passed" not in proc.stdout
+    assert "PINEFORGE_ENGINE_INCLUDE" in proc.stdout