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Remove idempotent lowering test

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This commit is contained in:
Jeffrey Seyfried 2016-04-30 19:37:17 +00:00
parent 0649942a46
commit 02df9f32b1
1 changed files with 0 additions and 114 deletions
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114
src/librustc/hir/lowering.rs
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@ -2116,117 +2116,3 @@ fn signal_block_expr(lctx: &LoweringContext,
}),
attrs)
}
#[cfg(test)]
mod test {
use super::*;
use syntax::ast::{self, NodeId, NodeIdAssigner};
use syntax::{parse, codemap};
use syntax::fold::Folder;
use std::cell::Cell;
struct MockAssigner {
next_id: Cell<NodeId>,
}
impl MockAssigner {
fn new() -> MockAssigner {
MockAssigner { next_id: Cell::new(0) }
}
}
trait FakeExtCtxt {
fn call_site(&self) -> codemap::Span;
fn cfg(&self) -> ast::CrateConfig;
fn ident_of(&self, st: &str) -> ast::Ident;
fn name_of(&self, st: &str) -> ast::Name;
fn parse_sess(&self) -> &parse::ParseSess;
}
impl FakeExtCtxt for parse::ParseSess {
fn call_site(&self) -> codemap::Span {
codemap::Span {
lo: codemap::BytePos(0),
hi: codemap::BytePos(0),
expn_id: codemap::NO_EXPANSION,
}
}
fn cfg(&self) -> ast::CrateConfig {
Vec::new()
}
fn ident_of(&self, st: &str) -> ast::Ident {
parse::token::str_to_ident(st)
}
fn name_of(&self, st: &str) -> ast::Name {
parse::token::intern(st)
}
fn parse_sess(&self) -> &parse::ParseSess {
self
}
}
impl NodeIdAssigner for MockAssigner {
fn next_node_id(&self) -> NodeId {
let result = self.next_id.get();
self.next_id.set(result + 1);
result
}
fn peek_node_id(&self) -> NodeId {
self.next_id.get()
}
}
impl Folder for MockAssigner {
fn new_id(&mut self, old_id: NodeId) -> NodeId {
assert_eq!(old_id, ast::DUMMY_NODE_ID);
self.next_node_id()
}
}
#[test]
fn test_preserves_ids() {
let cx = parse::ParseSess::new();
let mut assigner = MockAssigner::new();
let ast_if_let = quote_expr!(&cx,
if let Some(foo) = baz {
bar(foo);
});
let ast_if_let = assigner.fold_expr(ast_if_let);
let ast_while_let = quote_expr!(&cx,
while let Some(foo) = baz {
bar(foo);
});
let ast_while_let = assigner.fold_expr(ast_while_let);
let ast_for = quote_expr!(&cx,
for i in 0..10 {
for j in 0..10 {
foo(i, j);
}
});
let ast_for = assigner.fold_expr(ast_for);
let ast_in = quote_expr!(&cx, in HEAP { foo() });
let ast_in = assigner.fold_expr(ast_in);
let lctx = LoweringContext::testing_context(&assigner);
let hir1 = lower_expr(&lctx, &ast_if_let);
let hir2 = lower_expr(&lctx, &ast_if_let);
assert!(hir1 == hir2);
let hir1 = lower_expr(&lctx, &ast_while_let);
let hir2 = lower_expr(&lctx, &ast_while_let);
assert!(hir1 == hir2);
let hir1 = lower_expr(&lctx, &ast_for);
let hir2 = lower_expr(&lctx, &ast_for);
assert!(hir1 == hir2);
let hir1 = lower_expr(&lctx, &ast_in);
let hir2 = lower_expr(&lctx, &ast_in);
assert!(hir1 == hir2);
}
}