Files
my-pi/pi-permission-system/test/access-intent/bash/token-classification.test.ts

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TypeScript

import { describe, expect, test } from "vitest";
import {
classifyBareTokenCandidate,
classifyTokenAsPathCandidate,
classifyTokenAsRuleCandidate,
} from "#src/access-intent/bash/token-classification";
import { posixPathFlavor, win32PathFlavor } from "#src/path/path-flavor";
// ── Shared rejection behaviour ─────────────────────────────────────────────
//
// Both classifiers delegate to the private `rejectNonPathToken` predicate for
// the six shared rejection cases tested below. Testing via both exports
// pins that predicate through each caller.
describe("classifyTokenAsPathCandidate", () => {
describe("shared rejection: rejectNonPathToken", () => {
test("empty string → null", () => {
expect(classifyTokenAsPathCandidate("")).toBeNull();
});
test("flag (leading dash) → null", () => {
expect(classifyTokenAsPathCandidate("-r")).toBeNull();
expect(classifyTokenAsPathCandidate("--recursive")).toBeNull();
});
test("env assignment (= before any /) → null", () => {
expect(classifyTokenAsPathCandidate("FOO=/bar")).toBeNull();
expect(classifyTokenAsPathCandidate("HOME=/home/user")).toBeNull();
});
test("env-like token where = comes after / is NOT rejected as assignment", () => {
// /foo=bar: slashIndex (0) < eqIndex (4) → not an assignment → continues
// Starts with /, so path candidate accepts it.
expect(classifyTokenAsPathCandidate("/foo=bar")).toBe("/foo=bar");
});
test("URL → null", () => {
expect(classifyTokenAsPathCandidate("https://example.com")).toBeNull();
expect(classifyTokenAsPathCandidate("http://localhost:3000")).toBeNull();
expect(classifyTokenAsPathCandidate("file:///tmp/foo")).toBeNull();
expect(
classifyTokenAsPathCandidate("git+ssh://github.com/a/b"),
).toBeNull();
});
test("@scope/package → null", () => {
expect(classifyTokenAsPathCandidate("@foo/bar")).toBeNull();
expect(classifyTokenAsPathCandidate("@scope/pkg")).toBeNull();
});
test("@/ prefix is NOT rejected (it looks like an absolute-rooted scoped path)", () => {
// @/ passes the @ guard; then for path candidate it doesn't start with /
// or ~/, and doesn't contain .., so it returns null anyway from the
// acceptance gate — but the rejection is not due to the @ guard.
// This test documents that @/ is not rejected by the shared rejection.
// The path classifier then rejects it for not matching any acceptance shape.
expect(classifyTokenAsPathCandidate("@/foo/bar")).toBeNull();
});
test("regex metacharacters → null", () => {
// REGEX_METACHAR_PATTERN: .*, .+, \|, \(, \), [...], ^/
expect(classifyTokenAsPathCandidate("foo.*")).toBeNull();
expect(classifyTokenAsPathCandidate("bar.+")).toBeNull();
expect(classifyTokenAsPathCandidate("a\\|b")).toBeNull();
expect(classifyTokenAsPathCandidate("\\(group\\)")).toBeNull();
expect(classifyTokenAsPathCandidate("[abc]")).toBeNull();
expect(classifyTokenAsPathCandidate("^/start")).toBeNull();
});
});
describe("path-candidate acceptance gate", () => {
test("absolute path (starts with /) → returned as-is", () => {
expect(classifyTokenAsPathCandidate("/etc/hosts")).toBe("/etc/hosts");
expect(classifyTokenAsPathCandidate("/tmp")).toBe("/tmp");
expect(classifyTokenAsPathCandidate("/home/user/file.txt")).toBe(
"/home/user/file.txt",
);
});
test("bare-slash token (filesystem root) → returned as-is", () => {
// `find /` scans the whole filesystem from root — a deliberate
// external-directory access the gate must see, not drop (#583).
expect(classifyTokenAsPathCandidate("/")).toBe("/");
expect(classifyTokenAsPathCandidate("//")).toBe("//");
expect(classifyTokenAsPathCandidate("///")).toBe("///");
});
test("home-relative path (starts with ~/) → returned as-is", () => {
expect(classifyTokenAsPathCandidate("~/Documents")).toBe("~/Documents");
expect(classifyTokenAsPathCandidate("~/.ssh/config")).toBe(
"~/.ssh/config",
);
});
test("parent-traversal (contains ..) → returned as-is", () => {
expect(classifyTokenAsPathCandidate("../../etc/passwd")).toBe(
"../../etc/passwd",
);
expect(classifyTokenAsPathCandidate("../foo")).toBe("../foo");
expect(classifyTokenAsPathCandidate("..")).toBe("..");
});
test("plain word with no path shape → null", () => {
expect(classifyTokenAsPathCandidate("hello")).toBeNull();
expect(classifyTokenAsPathCandidate("myfile.txt")).toBeNull();
});
test("dot-file (starts with .) → null (strict path gate)", () => {
// Path candidate does NOT accept dot-files; rule candidate does.
expect(classifyTokenAsPathCandidate(".env")).toBeNull();
expect(classifyTokenAsPathCandidate(".gitignore")).toBeNull();
});
test("relative path with / but no leading / or ~/ → null (strict path gate)", () => {
// Path candidate does NOT accept bare relative paths; rule candidate does.
expect(classifyTokenAsPathCandidate("src/foo.ts")).toBeNull();
expect(classifyTokenAsPathCandidate("./build")).toBeNull();
});
});
describe("Windows drive-letter acceptance gate", () => {
test("forward-slash drive path → returned as-is", () => {
expect(classifyTokenAsPathCandidate("C:/Windows/win.ini")).toBe(
"C:/Windows/win.ini",
);
expect(classifyTokenAsPathCandidate("D:/secrets/password.txt")).toBe(
"D:/secrets/password.txt",
);
});
test("backslash drive path → returned as-is", () => {
expect(classifyTokenAsPathCandidate("C:\\Windows\\win.ini")).toBe(
"C:\\Windows\\win.ini",
);
expect(classifyTokenAsPathCandidate("D:\\secrets\\password.txt")).toBe(
"D:\\secrets\\password.txt",
);
});
test("lowercase drive letter → returned as-is", () => {
expect(classifyTokenAsPathCandidate("c:/foo")).toBe("c:/foo");
});
test("single-letter scheme with double-slash (c://x) → null (URL_PATTERN fires first)", () => {
// c:// matches URL_PATTERN before the drive-letter check runs.
expect(classifyTokenAsPathCandidate("c://x")).toBeNull();
});
test("drive-relative path without separator (C:foo) → null", () => {
// No / or \ after the colon — not an absolute drive path per node:path.
expect(classifyTokenAsPathCandidate("C:foo")).toBeNull();
});
});
});
describe("classifyTokenAsRuleCandidate", () => {
describe("shared rejection: rejectNonPathToken", () => {
test("empty string → null", () => {
expect(classifyTokenAsRuleCandidate("", posixPathFlavor)).toBeNull();
});
test("flag (leading dash) → null", () => {
expect(classifyTokenAsRuleCandidate("-r", posixPathFlavor)).toBeNull();
expect(
classifyTokenAsRuleCandidate("--recursive", posixPathFlavor),
).toBeNull();
});
test("env assignment (= before any /) → null", () => {
expect(
classifyTokenAsRuleCandidate("FOO=/bar", posixPathFlavor),
).toBeNull();
expect(
classifyTokenAsRuleCandidate("HOME=/home/user", posixPathFlavor),
).toBeNull();
});
test("env-like token where = comes after / is NOT rejected as assignment", () => {
// /foo=bar: slashIndex (0) < eqIndex (4) → not an assignment → continues.
// Contains /, so rule candidate accepts it.
expect(classifyTokenAsRuleCandidate("/foo=bar", posixPathFlavor)).toBe(
"/foo=bar",
);
});
test("URL → null", () => {
expect(
classifyTokenAsRuleCandidate("https://example.com", posixPathFlavor),
).toBeNull();
expect(
classifyTokenAsRuleCandidate("http://localhost:3000", posixPathFlavor),
).toBeNull();
expect(
classifyTokenAsRuleCandidate("file:///tmp/foo", posixPathFlavor),
).toBeNull();
});
test("@scope/package → null", () => {
expect(
classifyTokenAsRuleCandidate("@foo/bar", posixPathFlavor),
).toBeNull();
expect(
classifyTokenAsRuleCandidate("@scope/pkg", posixPathFlavor),
).toBeNull();
});
test("regex metacharacters → null", () => {
expect(classifyTokenAsRuleCandidate("foo.*", posixPathFlavor)).toBeNull();
expect(classifyTokenAsRuleCandidate("bar.+", posixPathFlavor)).toBeNull();
expect(classifyTokenAsRuleCandidate("a\\|b", posixPathFlavor)).toBeNull();
expect(classifyTokenAsRuleCandidate("[abc]", posixPathFlavor)).toBeNull();
expect(
classifyTokenAsRuleCandidate("^/start", posixPathFlavor),
).toBeNull();
});
});
describe("rule-candidate acceptance gate (broader than path)", () => {
test("absolute path (starts with /) → returned as-is", () => {
expect(classifyTokenAsRuleCandidate("/etc/hosts", posixPathFlavor)).toBe(
"/etc/hosts",
);
});
test("bare-slash token (filesystem root) → returned as-is", () => {
// Root is a path-shaped token via `hasPathSeparator`; a `path` rule for
// `/` must be able to match it, same as any other absolute (#583).
expect(classifyTokenAsRuleCandidate("/", posixPathFlavor)).toBe("/");
expect(classifyTokenAsRuleCandidate("//", posixPathFlavor)).toBe("//");
});
test("home-relative path (starts with ~/) → returned as-is", () => {
expect(classifyTokenAsRuleCandidate("~/Documents", posixPathFlavor)).toBe(
"~/Documents",
);
});
test("parent-traversal (contains ..) → returned as-is", () => {
expect(classifyTokenAsRuleCandidate("../foo", posixPathFlavor)).toBe(
"../foo",
);
expect(classifyTokenAsRuleCandidate("..", posixPathFlavor)).toBe("..");
});
test("dot-file (starts with .) → returned as-is", () => {
// Rule candidate accepts dot-files; path candidate does not.
expect(classifyTokenAsRuleCandidate(".env", posixPathFlavor)).toBe(
".env",
);
expect(classifyTokenAsRuleCandidate(".gitignore", posixPathFlavor)).toBe(
".gitignore",
);
});
test("current-dir relative (starts with ./) → returned as-is", () => {
expect(classifyTokenAsRuleCandidate("./src", posixPathFlavor)).toBe(
"./src",
);
expect(
classifyTokenAsRuleCandidate("./build/output.js", posixPathFlavor),
).toBe("./build/output.js");
});
test("relative path containing / → returned as-is", () => {
// Rule candidate accepts any token with / (not already rejected).
expect(classifyTokenAsRuleCandidate("src/foo.ts", posixPathFlavor)).toBe(
"src/foo.ts",
);
expect(
classifyTokenAsRuleCandidate(
"packages/pi-foo/index.ts",
posixPathFlavor,
),
).toBe("packages/pi-foo/index.ts");
});
test("plain word with no path shape → null", () => {
expect(classifyTokenAsRuleCandidate("hello", posixPathFlavor)).toBeNull();
expect(
classifyTokenAsRuleCandidate("myfile.txt", posixPathFlavor),
).toBeNull();
});
});
describe("Windows drive-letter acceptance gate", () => {
test("forward-slash drive path → returned as-is", () => {
// Forward-slash form was already accepted via token.includes("/").
// The explicit branch makes it first-class and order-independent.
expect(
classifyTokenAsRuleCandidate("C:/Windows/win.ini", posixPathFlavor),
).toBe("C:/Windows/win.ini");
});
test("backslash drive path → returned as-is (new: no forward slash)", () => {
// Previously dropped by both classifiers; the backslash form has no /
// so the includes("/") branch could not catch it.
expect(
classifyTokenAsRuleCandidate(
"D:\\secrets\\password.txt",
posixPathFlavor,
),
).toBe("D:\\secrets\\password.txt");
expect(
classifyTokenAsRuleCandidate("C:\\Windows\\win.ini", posixPathFlavor),
).toBe("C:\\Windows\\win.ini");
});
test("lowercase drive letter (backslash) → returned as-is", () => {
expect(classifyTokenAsRuleCandidate("c:\\foo", posixPathFlavor)).toBe(
"c:\\foo",
);
});
test("drive-relative path without separator (C:foo) → null", () => {
expect(classifyTokenAsRuleCandidate("C:foo", posixPathFlavor)).toBeNull();
});
});
describe("Windows backslash-relative acceptance gate (win32 flavor, #520)", () => {
test("backslash-relative token accepted under the win32 flavor", () => {
expect(classifyTokenAsRuleCandidate("dir\\file", win32PathFlavor)).toBe(
"dir\\file",
);
});
test("backslash-relative token rejected under the posix flavor", () => {
expect(
classifyTokenAsRuleCandidate("dir\\file", posixPathFlavor),
).toBeNull();
});
test("backslash regex-metacharacter token still rejected under the win32 flavor", () => {
// rejectNonPathToken's REGEX_METACHAR_PATTERN fires before the separator
// branch is reached, regardless of flavor.
expect(classifyTokenAsRuleCandidate("a\\|b", win32PathFlavor)).toBeNull();
expect(
classifyTokenAsRuleCandidate("\\(group\\)", win32PathFlavor),
).toBeNull();
});
test("backslash traversal accepted regardless of flavor (already via ..)", () => {
expect(classifyTokenAsRuleCandidate("..\\secret", posixPathFlavor)).toBe(
"..\\secret",
);
expect(classifyTokenAsRuleCandidate("..\\secret", win32PathFlavor)).toBe(
"..\\secret",
);
});
});
describe("rule-vs-path divergence", () => {
const dotFiles = [".env", ".gitignore", ".eslintrc"];
const relPaths = ["src/index.ts", "lib/utils.js", "config/settings.json"];
for (const tok of dotFiles) {
test(`dot-file "${tok}": rule accepts, path rejects`, () => {
expect(classifyTokenAsRuleCandidate(tok, posixPathFlavor)).toBe(tok);
expect(classifyTokenAsPathCandidate(tok)).toBeNull();
});
}
for (const tok of relPaths) {
test(`relative path "${tok}": rule accepts, path rejects`, () => {
expect(classifyTokenAsRuleCandidate(tok, posixPathFlavor)).toBe(tok);
expect(classifyTokenAsPathCandidate(tok)).toBeNull();
});
}
const sharedAccepted = ["/etc/hosts", "~/docs", "../sibling"];
for (const tok of sharedAccepted) {
test(`"${tok}": both classifiers accept`, () => {
expect(classifyTokenAsRuleCandidate(tok, posixPathFlavor)).toBe(tok);
expect(classifyTokenAsPathCandidate(tok)).toBe(tok);
});
}
const winDrivePaths = [
"C:/Windows/win.ini",
"D:\\secrets\\password.txt",
"c:/foo",
];
for (const tok of winDrivePaths) {
test(`Windows drive path "${tok}": both classifiers accept`, () => {
expect(classifyTokenAsRuleCandidate(tok, posixPathFlavor)).toBe(tok);
expect(classifyTokenAsPathCandidate(tok)).toBe(tok);
});
}
const sharedRejected = ["hello", "--flag", "FOO=/bar", "https://x.com"];
for (const tok of sharedRejected) {
test(`"${tok}": both classifiers reject`, () => {
expect(classifyTokenAsRuleCandidate(tok, posixPathFlavor)).toBeNull();
expect(classifyTokenAsPathCandidate(tok)).toBeNull();
});
}
});
});
describe("classifyBareTokenCandidate", () => {
// Prelude-only: returns the token when nothing about its *shape* rules out
// being a path. Whether it names a real entry is the existence probe's
// question, decided by the resolver (ADR 0009), not by this classifier.
test("bare word → returned unchanged", () => {
expect(classifyBareTokenCandidate("id_rsa")).toBe("id_rsa");
expect(classifyBareTokenCandidate("key.pem")).toBe("key.pem");
expect(classifyBareTokenCandidate("outside-link")).toBe("outside-link");
});
test("bare word that names no file is still returned — existence is not its question", () => {
expect(classifyBareTokenCandidate("status")).toBe("status");
expect(classifyBareTokenCandidate("build")).toBe("build");
});
test("consults no policy — identical result for every token of the same shape", () => {
expect(classifyBareTokenCandidate("anything")).toBe("anything");
});
describe("shared rejection prelude", () => {
test("flag (leading dash) → null", () => {
expect(classifyBareTokenCandidate("-r")).toBeNull();
expect(classifyBareTokenCandidate("--recursive")).toBeNull();
});
test("env assignment → null", () => {
expect(classifyBareTokenCandidate("FOO=/bar")).toBeNull();
});
test("URL → null", () => {
expect(classifyBareTokenCandidate("https://example.com")).toBeNull();
});
test("@scope/package → null", () => {
expect(classifyBareTokenCandidate("@foo/bar")).toBeNull();
});
test("regex metacharacters → null", () => {
expect(classifyBareTokenCandidate("foo.*")).toBeNull();
});
test("empty string → null", () => {
expect(classifyBareTokenCandidate("")).toBeNull();
});
});
});