--- /dev/null
+{
+ "git": {
+ "sha1": "468738e5f0f8b8ddb67fd693dbc4d748412bf848"
+ },
+ "path_in_vcs": "mockall_double"
+}
\ No newline at end of file
--- /dev/null
+# Change Log
+
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+
+## [ Unreleased ] - ReleaseDate
+
+### Added
+
+- Added the ability to mock type aliases.
+ ([#374](https://github.com/asomers/mockall/pull/374))
--- /dev/null
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2018"
+name = "mockall_double"
+version = "0.3.0"
+authors = ["Alan Somers <asomers@gmail.com>"]
+description = """
+Test double adapter for Mockall
+"""
+documentation = "https://docs.rs/mockall_double"
+readme = "README.md"
+keywords = [
+ "mock",
+ "mocking",
+ "testing",
+]
+categories = ["development-tools::testing"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/asomers/mockall"
+
+[lib]
+proc-macro = true
+
+[dependencies.cfg-if]
+version = "1.0"
+
+[dependencies.proc-macro2]
+version = "1.0"
+
+[dependencies.quote]
+version = "1.0"
+
+[dependencies.syn]
+version = "1.0.15"
+features = ["full"]
+
+[features]
+nightly = ["proc-macro2/nightly"]
--- /dev/null
+[package]
+name = "mockall_double"
+version = "0.3.0"
+authors = ["Alan Somers <asomers@gmail.com>"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/asomers/mockall"
+categories = ["development-tools::testing"]
+keywords = ["mock", "mocking", "testing"]
+documentation = "https://docs.rs/mockall_double"
+edition = "2018"
+description = """
+Test double adapter for Mockall
+"""
+
+[lib]
+proc-macro = true
+
+[features]
+nightly = ["proc-macro2/nightly"]
+
+[dependencies]
+cfg-if = "1.0"
+proc-macro2 = "1.0"
+quote = "1.0"
+syn = { version = "1.0.15", features = ["full"] }
--- /dev/null
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+ To apply the Apache License to your work, attach the following
+ boilerplate notice, with the fields enclosed by brackets "[]"
+ replaced with your own identifying information. (Don't include
+ the brackets!) The text should be enclosed in the appropriate
+ comment syntax for the file format. We also recommend that a
+ file or class name and description of purpose be included on the
+ same "printed page" as the copyright notice for easier
+ identification within third-party archives.
+
+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
--- /dev/null
+Copyright (c) 2019 Alan Somers
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
--- /dev/null
+# mockall_double
+
+A double test adapter that works well with Mockall.
+
+[](https://cirrus-ci.com/github/asomers/mockall)
+[](https://crates.io/crates/mockall_double)
+[](https://docs.rs/mockall_double)
+
+## Overview
+
+Mockall can easily create a mock version of a struct. But how does one
+convince the code under test to use the mock struct instead of the real one?
+In Rust, it's necessary to replace the real struct at compile time. That's
+very easy to do with a few `#[cfg(test)]` statements. But mockall_double makes
+it even easier.
+
+## Usage
+
+Typically `mockall` is only used by unit tests, so it can be a dev-dependency.
+But `mockall_double` must be a full dependency. To use it this way, add this to
+your `Cargo.toml`:
+
+```toml
+[dependencies]
+mockall_double = "0.2.1"
+
+[dev-dependencies]
+mockall = "0.11.0"
+```
+
+Then use it like this:
+
+```rust
+use mockall_double::double;
+
+mod mockable {
+ #[cfg(test)]
+ use mockall::automock;
+
+ pub struct Foo {}
+ #[cfg_attr(test, automock)]
+ impl Foo {
+ pub fn foo(&self, x: u32) -> u32 {
+ // ...
+ 0
+ }
+ }
+}
+
+#[double]
+use mockable::Foo;
+
+fn bar(f: Foo) -> u32 {
+ f.foo(42)
+}
+
+#[cfg(test)]
+mod tests {
+ use super::*;
+
+ #[test]
+ fn bar_test() {
+ let mut mock = Foo::new();
+ mock.expect_foo()
+ .returning(|x| x + 1);
+ assert_eq!(43, bar(mock));
+ }
+}
+```
+
+See the [API docs](https://docs.rs/mockall_double) for more information.
+
+# Minimum Supported Rust Version (MSRV)
+
+`mockall_double` is tested with the same MSRV as Mockall itself. Currently,
+that's Rust 1.42.0. `mockall_double`'s MSRV will not be changed in the future
+without bumping the major or minor version.
+
+# License
+
+`mockall_double` is primarily distributed under the terms of both the MIT
+license and the Apache License (Version 2.0).
+
+See LICENSE-APACHE, and LICENSE-MIT for details
+
+# Acknowledgements
+
+`mockall_double` is inspired by Jason Grlicky's
+[double](https://crates.io/crates/double) crate, but tweaked to work better
+with Mockall's naming conventions.
--- /dev/null
+// vim: tw=80
+//! Test double adapter for use with Mockall
+//!
+//! This crate provides [`#[double]`](macro@double), which can swap in Mock
+//! objects for real objects while in test mode. It's intended to be used in
+//! tandem with the [`mockall`](https://docs.rs/mockall/latest/mockall) crate.
+//! However, it is defined in its own crate so that the bulk of Mockall can
+//! remain a dev-dependency, instead of a regular dependency.
+
+#![cfg_attr(feature = "nightly", feature(proc_macro_diagnostic))]
+#![cfg_attr(test, deny(warnings))]
+extern crate proc_macro;
+
+use cfg_if::cfg_if;
+use proc_macro2::{Span, TokenStream};
+use quote::{format_ident, quote};
+use syn::{
+ *,
+ spanned::Spanned
+};
+
+cfg_if! {
+ // proc-macro2's Span::unstable method requires the nightly feature, and it
+ // doesn't work in test mode.
+ // https://github.com/alexcrichton/proc-macro2/issues/159
+ if #[cfg(all(feature = "nightly", not(test)))] {
+ fn compile_error(span: Span, msg: &'static str) {
+ span.unstable()
+ .error(msg)
+ .emit();
+ }
+ } else {
+ fn compile_error(_span: Span, msg: &str) {
+ panic!("{}. More information may be available when mockall_double is built with the \"nightly\" feature.", msg);
+ }
+ }
+}
+
+fn do_double(_attrs: TokenStream, input: TokenStream) -> TokenStream {
+ let mut item: Item = match parse2(input.clone()) {
+ Ok(u) => u,
+ Err(e) => return e.to_compile_error()
+ };
+ match &mut item {
+ Item::Use(use_stmt) => mock_itemuse(use_stmt),
+ Item::Type(item_type) => mock_itemtype(item_type),
+ _ => {
+ compile_error(item.span(),
+ "Only use statements and type aliases may be doubled");
+ }
+ };
+ quote!(
+ #[cfg(not(test))]
+ #input
+ #[cfg(test)]
+ #item
+ )
+}
+
+/// Import a mock type in test mode, or a real type otherwise.
+///
+/// In a regular build, this macro is a no-op. But when `#[cfg(test)]`, it
+/// substitutes "MockXXX" for any imported "XXX". This makes it easy to to use
+/// mock objects, especially structs, in your unit tests.
+///
+/// This macro uses the same naming convention as
+/// [`mockall`](https://docs.rs/mockall/latest/mockall), but doesn't strictly
+/// require it. It can work with hand-built Mock objects, or any other crate
+/// using the same naming convention.
+///
+/// This is the most common way to use `#[double]`. In order to replace a type,
+/// it must come from a separate module. So to mock type `Foo`, place it into a
+/// submodule, along with its mock counterpart. Then simply import `Foo` with
+/// `#[double]` like this:
+/// ```no_run
+/// # use mockall_double::double;
+/// mod foo {
+/// pub(super) struct Foo {
+/// // ...
+/// }
+/// #[cfg(test)]
+/// pub(super) struct MockFoo {
+/// // ...
+/// }
+/// }
+/// #[double]
+/// use foo::Foo;
+/// ```
+/// That will expand to the following:
+/// ```no_run
+/// # use mockall_double::double;
+/// # mod foo { pub struct Foo {} }
+/// #[cfg(not(test))]
+/// use foo::Foo;
+/// #[cfg(test)]
+/// use foo::MockFoo as Foo;
+/// ```
+/// `#[double]` can handle deeply nested paths,
+/// ```no_run
+/// # use mockall_double::double;
+/// # mod foo { pub mod bar { pub struct Baz{} } }
+/// #[double]
+/// use foo::bar::Baz;
+/// ```
+/// grouped imports,
+/// ```no_run
+/// # mod foo { pub mod bar { pub struct Baz{} pub struct Bean {} } }
+/// # use mockall_double::double;
+/// #[double]
+/// use foo::bar::{
+/// Baz,
+/// Bean
+/// };
+/// ```
+/// type aliases,
+/// ```no_run
+/// # mod bar { pub struct Baz {} }
+/// # use mockall_double::double;
+/// #[double]
+/// type Foo = bar::Baz;
+/// ```
+/// and renamed imports, too. With renamed imports, it isn't even necessary to
+/// declare a submodule.
+/// ```no_run
+/// # use mockall_double::double;
+/// # struct Foo {}
+/// #[double]
+/// use Foo as Bar;
+/// ```
+/// Finally, `#[double]` can also import entire mocked modules, not just
+/// structures. In this case the naming convention is different. It will
+/// replace "xxx" with "mock_xxx". For example:
+/// ```no_run
+/// # use mockall_double::double;
+/// mod foo {
+/// pub mod inner {
+/// // ...
+/// }
+/// pub mod mock_inner {
+/// // ...
+/// }
+/// }
+/// #[double]
+/// use foo::inner;
+/// ```
+/// will expand to:
+/// ```no_run
+/// # use mockall_double::double;
+/// # mod foo { pub mod inner { } pub mod mock_inner { } }
+/// #[cfg(not(test))]
+/// use foo::inner;
+/// #[cfg(test)]
+/// use foo::mock_inner as inner;
+/// ```
+///
+#[proc_macro_attribute]
+pub fn double(attrs: proc_macro::TokenStream, input: proc_macro::TokenStream)
+ -> proc_macro::TokenStream
+{
+ do_double(attrs.into(), input.into()).into()
+}
+
+fn mock_itemtype(orig: &mut ItemType) {
+ match &mut *orig.ty {
+ Type::Path(tp) => {
+ let ident = &tp.path.segments.last_mut().unwrap().ident;
+ tp.path.segments.last_mut().unwrap().ident = mock_ident(ident);
+ }
+ x => compile_error(x.span(), "Only path types may be doubled")
+ }
+}
+
+fn mock_itemuse(orig: &mut ItemUse) {
+ if let UseTree::Name(un) = &orig.tree {
+ compile_error(un.span(),
+ "Cannot double types in the current module. Use a submodule (use foo::Foo) or a rename (use Foo as Bar)");
+ } else {
+ mock_usetree(&mut orig.tree)
+ }
+}
+
+fn mock_ident(i: &Ident) -> Ident {
+ let is_type = format!("{}", i)
+ .chars()
+ .next()
+ .expect("zero-length ident?")
+ .is_uppercase();
+ if is_type {
+ // probably a Type
+ format_ident!("Mock{}", i)
+ } else {
+ // probably a module
+ format_ident!("mock_{}", i)
+ }
+}
+
+fn mock_usetree(mut orig: &mut UseTree) {
+ match &mut orig {
+ UseTree::Glob(star) => {
+ compile_error(star.span(),
+ "Cannot double glob imports. Import by fully qualified name instead.");
+ },
+ UseTree::Group(ug) => {
+ for ut in ug.items.iter_mut() {
+ mock_usetree(ut);
+ }
+ },
+ UseTree::Name(un) => {
+ *orig = UseTree::Rename(UseRename {
+ ident: mock_ident(&un.ident),
+ as_token: <Token![as]>::default(),
+ rename: un.ident.clone()
+ });
+ },
+ UseTree::Path(up) => {
+ mock_usetree(up.tree.as_mut());
+ },
+ UseTree::Rename(ur) => {
+ ur.ident = mock_ident(&ur.ident)
+ },
+ }
+}
+
+#[cfg(test)]
+mod t {
+ use super::*;
+
+mod double {
+ use super::*;
+ use std::str::FromStr;
+
+ fn cmp(attrs: &str, code: &str, expected: &str) {
+ let attrs_ts = TokenStream::from_str(attrs).unwrap();
+ let code_ts = TokenStream::from_str(code).unwrap();
+ let output = do_double(attrs_ts, code_ts);
+ let output = output.to_string();
+ // Round-trip expected through proc_macro2 so whitespace will be
+ // identically formatted
+ let expected = TokenStream::from_str(expected)
+ .unwrap()
+ .to_string();
+ assert_eq!(output, expected);
+ }
+
+ #[test]
+ #[should_panic(expected = "Cannot double glob")]
+ fn glob() {
+ let code = r#"use foo::*;"#;
+ cmp("", code, "");
+ }
+
+ #[test]
+ fn group() {
+ let code = r#"
+ use foo::bar::{
+ Baz,
+ Bean
+ };
+ "#;
+ let expected = r#"
+ #[cfg(not(test))]
+ use foo::bar::{
+ Baz,
+ Bean
+ };
+ #[cfg(test)]
+ use foo::bar::{
+ MockBaz as Baz,
+ MockBean as Bean
+ };
+ "#;
+ cmp("", code, expected);
+ }
+
+ #[test]
+ fn module() {
+ let code = r#"use foo::bar;"#;
+ let expected = r#"
+ #[cfg(not(test))]
+ use foo::bar;
+ #[cfg(test)]
+ use foo::mock_bar as bar;
+ "#;
+ cmp("", code, expected);
+ }
+
+ #[test]
+ #[should_panic(expected = "Cannot double types in the current module")]
+ fn name() {
+ let code = r#"use Foo;"#;
+ cmp("", code, "");
+ }
+
+ #[test]
+ fn path() {
+ let code = r#"use foo::bar::Baz;"#;
+ let expected = r#"
+ #[cfg(not(test))]
+ use foo::bar::Baz;
+ #[cfg(test)]
+ use foo::bar::MockBaz as Baz;
+ "#;
+ cmp("", code, expected);
+ }
+
+ #[test]
+ fn pub_use() {
+ let code = r#"pub use foo::bar;"#;
+ let expected = r#"
+ #[cfg(not(test))]
+ pub use foo::bar;
+ #[cfg(test)]
+ pub use foo::mock_bar as bar;
+ "#;
+ cmp("", code, expected);
+ }
+
+ #[test]
+ fn rename() {
+ let code = r#"use Foo as Bar;"#;
+ let expected = r#"
+ #[cfg(not(test))]
+ use Foo as Bar;
+ #[cfg(test)]
+ use MockFoo as Bar;
+ "#;
+ cmp("", code, expected);
+ }
+
+ #[test]
+ fn type_() {
+ let code = r#"type Foo = bar::Baz;"#;
+ let expected = r#"
+ #[cfg(not(test))]
+ type Foo = bar::Baz;
+ #[cfg(test)]
+ type Foo = bar::MockBaz;
+ "#;
+ cmp("", code, expected);
+ }
+
+ #[test]
+ #[should_panic(expected = "Only use statements and type aliases")]
+ fn undoubleable() {
+ let code = r#"struct Foo{}"#;
+ cmp("", code, "");
+ }
+}
+}
projects / platform / upstream / rust-mockall_double.git / commitdiff