// strglobeq_test — #154 regression pin, migrated from test/wcc/989_strglobeq_run.c.
//
// `str == str` / `str != str` delegate to rt_streq, and cgen's str-compare
// arm had an N_IDENT fast-path that ALWAYS read the header off BP+localfind(name).
// For a module-GLOBAL str ident localfind→0, so it loaded saved-BP/retaddr
// garbage instead of name(SB) — a silent CSTAGE miscompile (the header lives
// at name(SB), not the frame). Fix mirrors #148's slice global branch: LEAQ
// name(SB), load ptr/len off it. Now cs==ww, so this file is byteid-eligible.
//
// The bug is per-SHAPE in cgen, so each comparison shape is a separate fn the
// @tests drive over three inputs: "/" (eqsep), "foo" (neither), "/usr"
// (eqlong). Shapes cover const-global AND let-global operands, ident on RHS
// AND on LHS, == AND !=, and a length>1 global ("/usr") so the LEN word — not
// just the ptr — is read off name(SB). PRIMITIVE-only (bool) asserts — no
// fmt/strconv; a wrong base/len yields a wrong boolean.

package strglobeq_test;

const csep: str = "/";
let lsep: str = "/";
const longsep: str = "/usr";

// rhs-ident global (p == g): const, let, len>1, and !=.
fn eqr_const(p: str) bool = { return p == csep; };
fn eqr_let(p: str) bool = { return p == lsep; };
fn eqr_long(p: str) bool = { return p == longsep; };
fn ner_const(p: str) bool = { return p != csep; };

// lhs-ident global (g == p): const and len>1.
fn eql_const(p: str) bool = { return csep == p; };
fn eql_long(p: str) bool = { return longsep == p; };

// Shape 1 — rhs const-global ==.
@test fn rhs_const_eq() void = {
	assert(eqr_const("/") == true);
	assert(eqr_const("foo") == false);
	assert(eqr_const("/usr") == false);
};

// Shape 2 — rhs let-global ==.
@test fn rhs_let_eq() void = {
	assert(eqr_let("/") == true);
	assert(eqr_let("foo") == false);
	assert(eqr_let("/usr") == false);
};

// Shape 3 — lhs const-global ==.
@test fn lhs_const_eq() void = {
	assert(eql_const("/") == true);
	assert(eql_const("foo") == false);
	assert(eql_const("/usr") == false);
};

// Shape 4 — rhs const-global != (negation arm).
@test fn rhs_const_ne() void = {
	assert(ner_const("/") == false);
	assert(ner_const("foo") == true);
	assert(ner_const("/usr") == true);
};

// Shape 5 — rhs len>1 const-global == (LEN word read off name(SB)).
@test fn rhs_long_eq() void = {
	assert(eqr_long("/") == false);
	assert(eqr_long("foo") == false);
	assert(eqr_long("/usr") == true);
};

// Shape 6 — lhs len>1 const-global == (LEN word, lhs sub-site).
@test fn lhs_long_eq() void = {
	assert(eql_long("/") == false);
	assert(eql_long("foo") == false);
	assert(eql_long("/usr") == true);
};