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test_cargo_compile_git_deps.rs
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use std::fs::{self, File};
use std::io::prelude::*;
use std::path::Path;
use std::thread;
use git2;
use support::{git, project, execs, main_file, path2url};
use support::{COMPILING, UPDATING, RUNNING};
use support::paths::{self, CargoPathExt};
use hamcrest::{assert_that,existing_file};
use cargo;
use cargo::util::process;
fn setup() {
}
test!(cargo_compile_simple_git_dep {
let project = project("foo");
let git_project = git::new("dep1", |project| {
project
.file("Cargo.toml", r#"
[project]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "dep1"
"#)
.file("src/dep1.rs", r#"
pub fn hello() -> &'static str {
"hello world"
}
"#)
}).unwrap();
let project = project
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
git = '{}'
[[bin]]
name = "foo"
"#, git_project.url()))
.file("src/foo.rs", &main_file(r#""{}", dep1::hello()"#, &["dep1"]));
let root = project.root();
let git_root = git_project.root();
assert_that(project.cargo_process("build"),
execs()
.with_stdout(&format!("{} git repository `{}`\n\
{} dep1 v0.5.0 ({}#[..])\n\
{} foo v0.5.0 ({})\n",
UPDATING, path2url(git_root.clone()),
COMPILING, path2url(git_root),
COMPILING, path2url(root)))
.with_stderr(""));
assert_that(&project.bin("foo"), existing_file());
assert_that(
cargo::util::process(&project.bin("foo")).unwrap(),
execs().with_stdout("hello world\n"));
});
test!(cargo_compile_git_dep_branch {
let project = project("foo");
let git_project = git::new("dep1", |project| {
project
.file("Cargo.toml", r#"
[project]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "dep1"
"#)
.file("src/dep1.rs", r#"
pub fn hello() -> &'static str {
"hello world"
}
"#)
}).unwrap();
// Make a new branch based on the current HEAD commit
let repo = git2::Repository::open(&git_project.root()).unwrap();
let head = repo.head().unwrap().target().unwrap();
let head = repo.find_commit(head).unwrap();
repo.branch("branchy", &head, true).unwrap();
let project = project
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
git = '{}'
branch = "branchy"
[[bin]]
name = "foo"
"#, git_project.url()))
.file("src/foo.rs", &main_file(r#""{}", dep1::hello()"#, &["dep1"]));
let root = project.root();
let git_root = git_project.root();
assert_that(project.cargo_process("build"),
execs()
.with_stdout(&format!("{} git repository `{}`\n\
{} dep1 v0.5.0 ({}?branch=branchy#[..])\n\
{} foo v0.5.0 ({})\n",
UPDATING, path2url(git_root.clone()),
COMPILING, path2url(git_root),
COMPILING, path2url(root)))
.with_stderr(""));
assert_that(&project.bin("foo"), existing_file());
assert_that(
cargo::util::process(&project.bin("foo")).unwrap(),
execs().with_stdout("hello world\n"));
});
test!(cargo_compile_git_dep_tag {
let project = project("foo");
let git_project = git::new("dep1", |project| {
project
.file("Cargo.toml", r#"
[project]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "dep1"
"#)
.file("src/dep1.rs", r#"
pub fn hello() -> &'static str {
"hello world"
}
"#)
}).unwrap();
// Make a tag corresponding to the current HEAD
let repo = git2::Repository::open(&git_project.root()).unwrap();
let head = repo.head().unwrap().target().unwrap();
repo.tag("v0.1.0",
&repo.find_object(head, None).unwrap(),
&repo.signature().unwrap(),
"make a new tag",
false).unwrap();
let project = project
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
git = '{}'
tag = "v0.1.0"
[[bin]]
name = "foo"
"#, git_project.url()))
.file("src/foo.rs", &main_file(r#""{}", dep1::hello()"#, &["dep1"]));
let root = project.root();
let git_root = git_project.root();
assert_that(project.cargo_process("build"),
execs()
.with_stdout(&format!("{} git repository `{}`\n\
{} dep1 v0.5.0 ({}?tag=v0.1.0#[..])\n\
{} foo v0.5.0 ({})\n",
UPDATING, path2url(git_root.clone()),
COMPILING, path2url(git_root),
COMPILING, path2url(root))));
assert_that(&project.bin("foo"), existing_file());
assert_that(cargo::util::process(&project.bin("foo")).unwrap(),
execs().with_stdout("hello world\n"));
assert_that(project.cargo("build"),
execs().with_status(0));
});
test!(cargo_compile_with_nested_paths {
let git_project = git::new("dep1", |project| {
project
.file("Cargo.toml", r#"
[project]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[dependencies.dep2]
version = "0.5.0"
path = "vendor/dep2"
[lib]
name = "dep1"
"#)
.file("src/dep1.rs", r#"
extern crate dep2;
pub fn hello() -> &'static str {
dep2::hello()
}
"#)
.file("vendor/dep2/Cargo.toml", r#"
[project]
name = "dep2"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "dep2"
"#)
.file("vendor/dep2/src/dep2.rs", r#"
pub fn hello() -> &'static str {
"hello world"
}
"#)
}).unwrap();
let p = project("parent")
.file("Cargo.toml", &format!(r#"
[project]
name = "parent"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
version = "0.5.0"
git = '{}'
[[bin]]
name = "parent"
"#, git_project.url()))
.file("src/parent.rs",
&main_file(r#""{}", dep1::hello()"#, &["dep1"]));
p.cargo_process("build")
.exec_with_output()
.unwrap();
assert_that(&p.bin("parent"), existing_file());
assert_that(cargo::util::process(&p.bin("parent")).unwrap(),
execs().with_stdout("hello world\n"));
});
test!(cargo_compile_with_meta_package {
let git_project = git::new("meta-dep", |project| {
project
.file("dep1/Cargo.toml", r#"
[project]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "dep1"
"#)
.file("dep1/src/dep1.rs", r#"
pub fn hello() -> &'static str {
"this is dep1"
}
"#)
.file("dep2/Cargo.toml", r#"
[project]
name = "dep2"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "dep2"
"#)
.file("dep2/src/dep2.rs", r#"
pub fn hello() -> &'static str {
"this is dep2"
}
"#)
}).unwrap();
let p = project("parent")
.file("Cargo.toml", &format!(r#"
[project]
name = "parent"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
version = "0.5.0"
git = '{}'
[dependencies.dep2]
version = "0.5.0"
git = '{}'
[[bin]]
name = "parent"
"#, git_project.url(), git_project.url()))
.file("src/parent.rs",
&main_file(r#""{} {}", dep1::hello(), dep2::hello()"#, &["dep1", "dep2"]));
p.cargo_process("build")
.exec_with_output()
.unwrap();
assert_that(&p.bin("parent"), existing_file());
assert_that(cargo::util::process(&p.bin("parent")).unwrap(),
execs().with_stdout("this is dep1 this is dep2\n"));
});
test!(cargo_compile_with_short_ssh_git {
let url = "git@github.com:a/dep";
let project = project("project")
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep]
git = "{}"
[[bin]]
name = "foo"
"#, url))
.file("src/foo.rs", &main_file(r#""{}", dep1::hello()"#, &["dep1"]));
assert_that(project.cargo_process("build"),
execs()
.with_stdout("")
.with_stderr(&format!("\
failed to parse manifest at `[..]`
Caused by:
invalid url `{}`: relative URL without a base
", url)));
});
test!(two_revs_same_deps {
let bar = git::new("meta-dep", |project| {
project.file("Cargo.toml", r#"
[package]
name = "bar"
version = "0.0.0"
authors = []
"#)
.file("src/lib.rs", "pub fn bar() -> i32 { 1 }")
}).unwrap();
let repo = git2::Repository::open(&bar.root()).unwrap();
let rev1 = repo.revparse_single("HEAD").unwrap().id();
// Commit the changes and make sure we trigger a recompile
File::create(&bar.root().join("src/lib.rs")).unwrap().write_all(br#"
pub fn bar() -> i32 { 2 }
"#).unwrap();
git::add(&repo);
let rev2 = git::commit(&repo);
let foo = project("foo")
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.0.0"
authors = []
[dependencies.bar]
git = '{}'
rev = "{}"
[dependencies.baz]
path = "../baz"
"#, bar.url(), rev1))
.file("src/main.rs", r#"
extern crate bar;
extern crate baz;
fn main() {
assert_eq!(bar::bar(), 1);
assert_eq!(baz::baz(), 2);
}
"#);
let baz = project("baz")
.file("Cargo.toml", &format!(r#"
[package]
name = "baz"
version = "0.0.0"
authors = []
[dependencies.bar]
git = '{}'
rev = "{}"
"#, bar.url(), rev2))
.file("src/lib.rs", r#"
extern crate bar;
pub fn baz() -> i32 { bar::bar() }
"#);
baz.build();
assert_that(foo.cargo_process("build").arg("-v"),
execs().with_status(0));
assert_that(&foo.bin("foo"), existing_file());
assert_that(foo.process(&foo.bin("foo")), execs().with_status(0));
});
test!(recompilation {
let git_project = git::new("bar", |project| {
project
.file("Cargo.toml", r#"
[project]
name = "bar"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "bar"
"#)
.file("src/bar.rs", r#"
pub fn bar() {}
"#)
}).unwrap();
let p = project("foo")
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.bar]
version = "0.5.0"
git = '{}'
[[bin]]
name = "foo"
"#, git_project.url()))
.file("src/foo.rs",
&main_file(r#""{:?}", bar::bar()"#, &["bar"]));
// First time around we should compile both foo and bar
assert_that(p.cargo_process("build"),
execs().with_stdout(&format!("{} git repository `{}`\n\
{} bar v0.5.0 ({}#[..])\n\
{} foo v0.5.0 ({})\n",
UPDATING, git_project.url(),
COMPILING, git_project.url(),
COMPILING, p.url())));
// Don't recompile the second time
assert_that(p.cargo("build"),
execs().with_stdout(""));
// Modify a file manually, shouldn't trigger a recompile
File::create(&git_project.root().join("src/bar.rs")).unwrap().write_all(br#"
pub fn bar() { println!("hello!"); }
"#).unwrap();
assert_that(p.cargo("build"),
execs().with_stdout(""));
assert_that(p.cargo("update"),
execs().with_stdout(&format!("{} git repository `{}`",
UPDATING,
git_project.url())));
assert_that(p.cargo("build"),
execs().with_stdout(""));
// Commit the changes and make sure we don't trigger a recompile because the
// lockfile says not to change
let repo = git2::Repository::open(&git_project.root()).unwrap();
git::add(&repo);
git::commit(&repo);
println!("compile after commit");
assert_that(p.cargo("build"),
execs().with_stdout(""));
p.root().move_into_the_past().unwrap();
// Update the dependency and carry on!
assert_that(p.cargo("update"),
execs().with_stdout(&format!("{} git repository `{}`\n\
{} bar v0.5.0 ([..]) -> #[..]\n\
",
UPDATING,
git_project.url(),
UPDATING)));
println!("going for the last compile");
assert_that(p.cargo("build"),
execs().with_stdout(&format!("{} bar v0.5.0 ({}#[..])\n\
{} foo v0.5.0 ({})\n",
COMPILING, git_project.url(),
COMPILING, p.url())));
// Make sure clean only cleans one dep
assert_that(p.cargo("clean")
.arg("-p").arg("foo"),
execs().with_stdout(""));
assert_that(p.cargo("build"),
execs().with_stdout(&format!("{} foo v0.5.0 ({})\n",
COMPILING, p.url())));
});
test!(update_with_shared_deps {
let git_project = git::new("bar", |project| {
project
.file("Cargo.toml", r#"
[project]
name = "bar"
version = "0.5.0"
authors = ["carlhuda@example.com"]
[lib]
name = "bar"
"#)
.file("src/bar.rs", r#"
pub fn bar() {}
"#)
}).unwrap();
let p = project("foo")
.file("Cargo.toml", r#"
[package]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
path = "dep1"
[dependencies.dep2]
path = "dep2"
"#)
.file("src/main.rs", r#"
extern crate dep1;
extern crate dep2;
fn main() {}
"#)
.file("dep1/Cargo.toml", &format!(r#"
[package]
name = "dep1"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.bar]
version = "0.5.0"
git = '{}'
"#, git_project.url()))
.file("dep1/src/lib.rs", "")
.file("dep2/Cargo.toml", &format!(r#"
[package]
name = "dep2"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.bar]
version = "0.5.0"
git = '{}'
"#, git_project.url()))
.file("dep2/src/lib.rs", "");
// First time around we should compile both foo and bar
assert_that(p.cargo_process("build"),
execs().with_stdout(&format!("\
{updating} git repository `{git}`
{compiling} bar v0.5.0 ({git}#[..])
{compiling} [..] v0.5.0 ({dir})
{compiling} [..] v0.5.0 ({dir})
{compiling} foo v0.5.0 ({dir})\n",
updating = UPDATING, git = git_project.url(),
compiling = COMPILING, dir = p.url())));
// Modify a file manually, and commit it
File::create(&git_project.root().join("src/bar.rs")).unwrap().write_all(br#"
pub fn bar() { println!("hello!"); }
"#).unwrap();
let repo = git2::Repository::open(&git_project.root()).unwrap();
let old_head = repo.head().unwrap().target().unwrap();
git::add(&repo);
git::commit(&repo);
thread::sleep_ms(1000);
// By default, not transitive updates
println!("dep1 update");
assert_that(p.cargo("update")
.arg("-p").arg("dep1"),
execs().with_stdout(""));
// Specifying a precise rev to the old rev shouldn't actually update
// anything because we already have the rev in the db.
println!("bar precise update");
assert_that(p.cargo("update")
.arg("-p").arg("bar")
.arg("--precise").arg(&old_head.to_string()),
execs().with_stdout(""));
// Updating aggressively should, however, update the repo.
println!("dep1 aggressive update");
assert_that(p.cargo("update")
.arg("-p").arg("dep1")
.arg("--aggressive"),
execs().with_stdout(&format!("{} git repository `{}`\n\
{} bar v0.5.0 ([..]) -> #[..]\n\
",
UPDATING,
git_project.url(),
UPDATING)));
// Make sure we still only compile one version of the git repo
println!("build");
assert_that(p.cargo("build"),
execs().with_stdout(&format!("\
{compiling} bar v0.5.0 ({git}#[..])
{compiling} [..] v0.5.0 ({dir})
{compiling} [..] v0.5.0 ({dir})
{compiling} foo v0.5.0 ({dir})\n",
git = git_project.url(),
compiling = COMPILING, dir = p.url())));
// We should be able to update transitive deps
assert_that(p.cargo("update").arg("-p").arg("bar"),
execs().with_stdout(&format!("{} git repository `{}`",
UPDATING,
git_project.url())));
});
test!(dep_with_submodule {
let project = project("foo");
let git_project = git::new("dep1", |project| {
project
.file("Cargo.toml", r#"
[package]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
"#)
}).unwrap();
let git_project2 = git::new("dep2", |project| {
project.file("lib.rs", "pub fn dep() {}")
}).unwrap();
let repo = git2::Repository::open(&git_project.root()).unwrap();
let url = path2url(git_project2.root()).to_string();
git::add_submodule(&repo, &url, Path::new("src"));
git::commit(&repo);
let project = project
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
git = '{}'
"#, git_project.url()))
.file("src/lib.rs", "
extern crate dep1;
pub fn foo() { dep1::dep() }
");
assert_that(project.cargo_process("build"),
execs().with_stderr("").with_status(0));
});
test!(two_deps_only_update_one {
let project = project("foo");
let git1 = git::new("dep1", |project| {
project
.file("Cargo.toml", r#"
[package]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
"#)
.file("src/lib.rs", "")
}).unwrap();
let git2 = git::new("dep2", |project| {
project
.file("Cargo.toml", r#"
[package]
name = "dep2"
version = "0.5.0"
authors = ["carlhuda@example.com"]
"#)
.file("src/lib.rs", "")
}).unwrap();
let project = project
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
git = '{}'
[dependencies.dep2]
git = '{}'
"#, git1.url(), git2.url()))
.file("src/main.rs", "fn main() {}");
assert_that(project.cargo_process("build"),
execs()
.with_stdout(&format!("{} git repository `[..]`\n\
{} git repository `[..]`\n\
{} [..] v0.5.0 ([..])\n\
{} [..] v0.5.0 ([..])\n\
{} foo v0.5.0 ({})\n",
UPDATING,
UPDATING,
COMPILING,
COMPILING,
COMPILING, project.url()))
.with_stderr(""));
File::create(&git1.root().join("src/lib.rs")).unwrap().write_all(br#"
pub fn foo() {}
"#).unwrap();
let repo = git2::Repository::open(&git1.root()).unwrap();
git::add(&repo);
git::commit(&repo);
assert_that(project.cargo("update")
.arg("-p").arg("dep1"),
execs()
.with_stdout(&format!("{} git repository `{}`\n\
{} dep1 v0.5.0 ([..]) -> #[..]\n\
",
UPDATING,
git1.url(),
UPDATING))
.with_stderr(""));
});
test!(stale_cached_version {
let bar = git::new("meta-dep", |project| {
project.file("Cargo.toml", r#"
[package]
name = "bar"
version = "0.0.0"
authors = []
"#)
.file("src/lib.rs", "pub fn bar() -> i32 { 1 }")
}).unwrap();
// Update the git database in the cache with the current state of the git
// repo
let foo = project("foo")
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.0.0"
authors = []
[dependencies.bar]
git = '{}'
"#, bar.url()))
.file("src/main.rs", r#"
extern crate bar;
fn main() { assert_eq!(bar::bar(), 1) }
"#);
assert_that(foo.cargo_process("build"), execs().with_status(0));
assert_that(foo.process(&foo.bin("foo")), execs().with_status(0));
// Update the repo, and simulate someone else updating the lockfile and then
// us pulling it down.
File::create(&bar.root().join("src/lib.rs")).unwrap().write_all(br#"
pub fn bar() -> i32 { 1 + 0 }
"#).unwrap();
let repo = git2::Repository::open(&bar.root()).unwrap();
git::add(&repo);
git::commit(&repo);
thread::sleep_ms(1000);
let rev = repo.revparse_single("HEAD").unwrap().id();
File::create(&foo.root().join("Cargo.lock")).unwrap().write_all(format!(r#"
[root]
name = "foo"
version = "0.0.0"
dependencies = [
'bar 0.0.0 (git+{url}#{hash})'
]
[[package]]
name = "bar"
version = "0.0.0"
source = 'git+{url}#{hash}'
"#, url = bar.url(), hash = rev).as_bytes()).unwrap();
// Now build!
assert_that(foo.cargo("build"),
execs().with_status(0)
.with_stdout(&format!("\
{updating} git repository `{bar}`
{compiling} bar v0.0.0 ({bar}#[..])
{compiling} foo v0.0.0 ({foo})
", updating = UPDATING, compiling = COMPILING, bar = bar.url(), foo = foo.url())));
assert_that(foo.process(&foo.bin("foo")), execs().with_status(0));
});
test!(dep_with_changed_submodule {
let project = project("foo");
let git_project = git::new("dep1", |project| {
project
.file("Cargo.toml", r#"
[package]
name = "dep1"
version = "0.5.0"
authors = ["carlhuda@example.com"]
"#)
}).unwrap();
let git_project2 = git::new("dep2", |project| {
project
.file("lib.rs", "pub fn dep() -> &'static str { \"project2\" }")
}).unwrap();
let git_project3 = git::new("dep3", |project| {
project
.file("lib.rs", "pub fn dep() -> &'static str { \"project3\" }")
}).unwrap();
let repo = git2::Repository::open(&git_project.root()).unwrap();
let mut sub = git::add_submodule(&repo, &git_project2.url().to_string(),
&Path::new("src"));
git::commit(&repo);
let project = project
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dependencies.dep1]
git = '{}'
"#, git_project.url()))
.file("src/main.rs", "
extern crate dep1;
pub fn main() { println!(\"{}\", dep1::dep()) }
");
println!("first run");
assert_that(project.cargo_process("run"), execs()
.with_stdout(&format!("{} git repository `[..]`\n\
{} dep1 v0.5.0 ([..])\n\
{} foo v0.5.0 ([..])\n\
{} `target[..]foo[..]`\n\
project2\
",
UPDATING,
COMPILING,
COMPILING,
RUNNING))
.with_stderr("")
.with_status(0));
File::create(&git_project.root().join(".gitmodules")).unwrap()
.write_all(format!("[submodule \"src\"]\n\tpath = src\n\turl={}",
git_project3.url()).as_bytes()).unwrap();
// Sync the submodule and reset it to the new remote.
sub.sync().unwrap();
{
let subrepo = sub.open().unwrap();
let mut origin = subrepo.find_remote("origin").unwrap();
origin.set_url(&git_project3.url().to_string()).unwrap();
origin.add_fetch("refs/heads/*:refs/heads/*").unwrap();;
origin.fetch(&[], None).unwrap();
origin.save().unwrap();
let id = subrepo.refname_to_id("refs/remotes/origin/master").unwrap();
let obj = subrepo.find_object(id, None).unwrap();
subrepo.reset(&obj, git2::ResetType::Hard, None).unwrap();
}
sub.add_to_index(true).unwrap();
git::add(&repo);
git::commit(&repo);
thread::sleep_ms(1000);
// Update the dependency and carry on!
println!("update");
assert_that(project.cargo("update").arg("-v"),
execs()
.with_stderr("")
.with_stdout(&format!("{} git repository `{}`\n\
{} dep1 v0.5.0 ([..]) -> #[..]\n\
",
UPDATING,
git_project.url(),
UPDATING)));
println!("last run");
assert_that(project.cargo("run"), execs()
.with_stdout(&format!("{compiling} dep1 v0.5.0 ([..])\n\
{compiling} foo v0.5.0 ([..])\n\
{running} `target[..]foo[..]`\n\
project3\
",
compiling = COMPILING, running = RUNNING))
.with_stderr("")
.with_status(0));
});
test!(dev_deps_with_testing {
let p2 = git::new("bar", |project| {
project.file("Cargo.toml", r#"
[package]
name = "bar"
version = "0.5.0"
authors = ["wycats@example.com"]
"#)
.file("src/lib.rs", r#"
pub fn gimme() -> &'static str { "zoidberg" }
"#)
}).unwrap();
let p = project("foo")
.file("Cargo.toml", &format!(r#"
[project]
name = "foo"
version = "0.5.0"
authors = ["wycats@example.com"]
[dev-dependencies.bar]
version = "0.5.0"
git = '{}'
"#, p2.url()))
.file("src/main.rs", r#"
fn main() {}