Skip to content

Allow specification of outer attributes on generated tests #17

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
phillord wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Allow specification of outer attributes on generated tests #17

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 17 additions & 1 deletion test-generator/src/lib.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -126,7 +126,7 @@ use self::glob::{glob, Paths};
use quote::quote;
use std::path::PathBuf;
use syn::parse::{Parse, ParseStream, Result};
use syn::{parse_macro_input, Expr, ExprLit, Ident, Lit, Token, ItemFn};
use syn::{parse_macro_input, Attribute, Expr, ExprLit, Ident, ItemFn, Lit, Token};

// Form canonical name without any punctuation/delimiter or special character
fn canonical_fn_name(s: &str) -> String {
Expand Down Expand Up @@ -165,6 +165,13 @@ impl Parse for MacroAttributes {
}
}

fn relevant_attribs_from_ast(func_ast: &ItemFn, ident_str: &str) -> Vec<Attribute> {
func_ast.clone().attrs.into_iter().filter
(|a| {
a.path.segments.iter().all(|ps| ps.ident!=ident_str)
}).collect()
}

/// Macro generating test-functions, invoking the fn for each item matching the resource-pattern.
///
/// The resource-pattern must not expand to empty list, otherwise an error is raised.
Expand Down Expand Up @@ -241,6 +248,8 @@ pub fn test_resources(attrs: TokenStream, func: TokenStream) -> TokenStream {
let func_ast: ItemFn = syn::parse(func)
.expect("failed to parse tokens as a function");

let func_attrs = relevant_attribs_from_ast(&func_ast, "test_resources");

let func_ident = func_ast.ident;

let paths: Paths = glob(&pattern).expect(&format!("No such file or directory {}", &pattern));
Expand All @@ -261,9 +270,11 @@ pub fn test_resources(attrs: TokenStream, func: TokenStream) -> TokenStream {
// quote! requires proc_macro2 elements
let test_ident = proc_macro2::Ident::new(&test_name, proc_macro2::Span::call_site());

let func_attrs = func_attrs.clone();
let item = quote! {
#[test]
#[allow(non_snake_case)]
#(#func_attrs)*
fn # test_ident () {
# func_ident ( #path_as_str .into() );
}
Expand All @@ -277,6 +288,7 @@ pub fn test_resources(attrs: TokenStream, func: TokenStream) -> TokenStream {
if result.0 == 0 {
panic!("no resource matching the pattern {}", &pattern);
}

// transforming proc_macro2::TokenStream into proc_macro::TokenStream
result.1.into()
}
Expand Down Expand Up @@ -360,6 +372,8 @@ pub fn bench_resources(attrs: TokenStream, func: TokenStream) -> TokenStream {
let func_ast: ItemFn = syn::parse(func)
.expect("failed to parse tokens as a function");

let func_attrs = relevant_attribs_from_ast(&func_ast, "bench_resources");

let func_ident = func_ast.ident;

let paths: Paths = glob(&pattern).expect(&format!("No such file or directory {}", &pattern));
Expand All @@ -380,9 +394,11 @@ pub fn bench_resources(attrs: TokenStream, func: TokenStream) -> TokenStream {
// quote! requires proc_macro2 elements
let test_ident = proc_macro2::Ident::new(&test_name, proc_macro2::Span::call_site());

let func_attrs = func_attrs.clone();
let item = quote! {
#[bench]
#[allow(non_snake_case)]
#(#func_attrs)*
fn # test_ident (b: &mut test::Bencher) {
# func_ident ( b, #path_as_str .into() );
}
Expand Down