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|
//! Tests for custom json target specifications.
use cargo_test_support::{basic_manifest, project};
use std::fs;
const MINIMAL_LIB: &str = r#"
#![allow(internal_features)]
#![feature(no_core)]
#![feature(lang_items)]
#![no_core]
#[lang = "sized"]
pub trait Sized {
// Empty.
}
#[lang = "copy"]
pub trait Copy {
// Empty.
}
"#;
const SIMPLE_SPEC: &str = r#"
{
"llvm-target": "x86_64-unknown-none-gnu",
"data-layout": "e-m:e-i64:64-f80:128-n8:16:32:64-S128",
"arch": "x86_64",
"target-endian": "little",
"target-pointer-width": "64",
"target-c-int-width": "32",
"os": "none",
"linker-flavor": "ld.lld",
"linker": "rust-lld",
"executables": true
}
"#;
#[cargo_test(nightly, reason = "requires features no_core, lang_items")]
fn custom_target_minimal() {
let p = project()
.file(
"src/lib.rs",
&"
__MINIMAL_LIB__
pub fn foo() -> u32 {
42
}
"
.replace("__MINIMAL_LIB__", MINIMAL_LIB),
)
.file("custom-target.json", SIMPLE_SPEC)
.build();
p.cargo("build --lib --target custom-target.json -v").run();
p.cargo("build --lib --target src/../custom-target.json -v")
.run();
// Ensure that the correct style of flag is passed to --target with doc tests.
p.cargo("test --doc --target src/../custom-target.json -v -Zdoctest-xcompile")
.masquerade_as_nightly_cargo(&["doctest-xcompile", "no_core", "lang_items"])
.with_stderr_contains("[RUNNING] `rustdoc [..]--target [..]foo/custom-target.json[..]")
.run();
}
#[cargo_test(nightly, reason = "requires features no_core, lang_items, auto_traits")]
fn custom_target_dependency() {
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.0.1"
authors = ["author@example.com"]
[dependencies]
bar = { path = "bar" }
"#,
)
.file(
"src/lib.rs",
r#"
#![allow(internal_features)]
#![feature(no_core)]
#![feature(lang_items)]
#![feature(auto_traits)]
#![no_core]
extern crate bar;
pub fn foo() -> u32 {
bar::bar()
}
#[lang = "freeze"]
unsafe auto trait Freeze {}
"#,
)
.file("bar/Cargo.toml", &basic_manifest("bar", "0.0.1"))
.file(
"bar/src/lib.rs",
&"
__MINIMAL_LIB__
pub fn bar() -> u32 {
42
}
"
.replace("__MINIMAL_LIB__", MINIMAL_LIB),
)
.file("custom-target.json", SIMPLE_SPEC)
.build();
p.cargo("build --lib --target custom-target.json -v").run();
}
#[cargo_test(nightly, reason = "requires features no_core, lang_items")]
fn custom_bin_target() {
let p = project()
.file(
"src/main.rs",
&"
#![no_main]
__MINIMAL_LIB__
"
.replace("__MINIMAL_LIB__", MINIMAL_LIB),
)
.file("custom-bin-target.json", SIMPLE_SPEC)
.build();
p.cargo("build --target custom-bin-target.json -v").run();
}
#[cargo_test(nightly, reason = "requires features no_core, lang_items")]
fn changing_spec_rebuilds() {
// Changing the .json file will trigger a rebuild.
let p = project()
.file(
"src/lib.rs",
&"
__MINIMAL_LIB__
pub fn foo() -> u32 {
42
}
"
.replace("__MINIMAL_LIB__", MINIMAL_LIB),
)
.file("custom-target.json", SIMPLE_SPEC)
.build();
p.cargo("build --lib --target custom-target.json -v").run();
p.cargo("build --lib --target custom-target.json -v")
.with_stderr(
"\
[FRESH] foo [..]
[FINISHED] [..]
",
)
.run();
let spec_path = p.root().join("custom-target.json");
let spec = fs::read_to_string(&spec_path).unwrap();
// Some arbitrary change that I hope is safe.
let spec = spec.replace('{', "{\n\"vendor\": \"unknown\",\n");
fs::write(&spec_path, spec).unwrap();
p.cargo("build --lib --target custom-target.json -v")
.with_stderr(
"\
[COMPILING] foo v0.0.1 [..]
[RUNNING] `rustc [..]
[FINISHED] [..]
",
)
.run();
}
#[cargo_test(nightly, reason = "requires features no_core, lang_items")]
fn changing_spec_relearns_crate_types() {
// Changing the .json file will invalidate the cache of crate types.
let p = project()
.file(
"Cargo.toml",
r#"
[package]
name = "foo"
version = "0.1.0"
[lib]
crate-type = ["cdylib"]
"#,
)
.file("src/lib.rs", MINIMAL_LIB)
.file("custom-target.json", SIMPLE_SPEC)
.build();
p.cargo("build --lib --target custom-target.json -v")
.with_status(101)
.with_stderr("error: cannot produce cdylib for `foo [..]")
.run();
// Enable dynamic linking.
let spec_path = p.root().join("custom-target.json");
let spec = fs::read_to_string(&spec_path).unwrap();
let spec = spec.replace('{', "{\n\"dynamic-linking\": true,\n");
fs::write(&spec_path, spec).unwrap();
p.cargo("build --lib --target custom-target.json -v")
.with_stderr(
"\
[COMPILING] foo [..]
[RUNNING] `rustc [..]
[FINISHED] [..]
",
)
.run();
}
#[cargo_test(nightly, reason = "requires features no_core, lang_items")]
fn custom_target_ignores_filepath() {
// Changing the path of the .json file will not trigger a rebuild.
let p = project()
.file(
"src/lib.rs",
&"
__MINIMAL_LIB__
pub fn foo() -> u32 {
42
}
"
.replace("__MINIMAL_LIB__", MINIMAL_LIB),
)
.file("b/custom-target.json", SIMPLE_SPEC)
.file("a/custom-target.json", SIMPLE_SPEC)
.build();
// Should build the library the first time.
p.cargo("build --lib --target a/custom-target.json")
.with_stderr(
"\
[..]Compiling foo v0.0.1 ([..])
[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]
",
)
.run();
// But not the second time, even though the path to the custom target is dfferent.
p.cargo("build --lib --target b/custom-target.json")
.with_stderr("[FINISHED] dev [unoptimized + debuginfo] target(s) in [..]")
.run();
}
|
