1 files changed, 37 insertions, 0 deletions

diff --git a/crates/test_utils/src/bench_fixture.rs b/crates/test_utils/src/bench_fixture.rs
new file mode 100644
index 000000000..aa1bea9bb
--- /dev/null
+++ b/crates/test_utils/src/bench_fixture.rs
@@ -0,0 +1,37 @@
+//! Generates large snippets of Rust code for usage in the benchmarks.
+
+use std::fs;
+
+use stdx::format_to;
+
+use crate::project_dir;
+
+pub fn big_struct() -> String {
+    let n = 1_000;
+
+    let mut buf = "pub struct RegisterBlock {".to_string();
+    for i in 0..n {
+        format_to!(buf, "  /// Doc comment for {}.\n", i);
+        format_to!(buf, "  pub s{}: S{},\n", i, i);
+    }
+    buf.push_str("}\n\n");
+    for i in 0..n {
+        format_to!(
+            buf,
+            "
+
+#[repr(transparent)]
+struct S{} {{
+    field: u32,
+}}",
+            i
+        );
+    }
+
+    buf
+}
+
+pub fn glorious_old_parser() -> String {
+    let path = project_dir().join("bench_data/glorious_old_parser");
+    fs::read_to_string(&path).unwrap()
+}