refactor: Migrate from extern crate to test-support prelude

We now include the prelude in so many places, this simplifies how we can
present how `cargo-test-support` works.

Yes, this included some `use` clean ups but its already painful enough
walking through every test file, I didn't want to do it twice.

Author: epage

Cargo.lock

@@ -237,7 +237,6 @@ features = [
 
 [dev-dependencies]
 annotate-snippets = { workspace = true, features = ["testing-colors"] }
-cargo-test-macro.workspace = true
 cargo-test-support.workspace = true
 gix = { workspace = true, features = ["revision"] }
 same-file.workspace = true

Cargo.toml

@@ -21,7 +21,7 @@
 #![allow(clippy::disallowed_methods)]
 
 use cargo_test_support::prelude::*;
-use cargo_test_support::*;
+use cargo_test_support::{basic_manifest, paths, project, rustc_host, str, Execs};
 use std::env;
 use std::path::Path;
 

tests/build-std/main.rs

@@ -1,5 +1,6 @@
 //! -Zadvanced-env tests
 
+use cargo_test_support::prelude::*;
 use cargo_test_support::{paths, project, registry::Package};
 
 #[cargo_test]

tests/testsuite/advanced_env.rs

@@ -1,12 +1,13 @@
 //! Tests for alternative registries.
 
+use std::fs;
+
 use cargo_test_support::compare::assert_e2e;
 use cargo_test_support::prelude::*;
 use cargo_test_support::publish::validate_alt_upload;
 use cargo_test_support::registry::{self, Package, RegistryBuilder};
 use cargo_test_support::str;
 use cargo_test_support::{basic_manifest, paths, project};
-use std::fs;
 
 #[cargo_test]
 fn depend_on_alt_registry() {

tests/testsuite/alt_registry.rs

@@ -1,12 +1,13 @@
 //! Tests for --artifact-dir flag.
 
+use std::env;
+use std::fs;
+use std::path::Path;
+
 use cargo_test_support::prelude::*;
 use cargo_test_support::sleep_ms;
 use cargo_test_support::str;
 use cargo_test_support::{basic_manifest, project};
-use std::env;
-use std::fs;
-use std::path::Path;
 
 #[cargo_test]
 fn binary_with_debug() {

tests/testsuite/artifact_dir.rs

@@ -1,5 +1,10 @@
 //! Tests for the `cargo build` command.
 
+use std::env;
+use std::fs;
+use std::io::Read;
+use std::process::Stdio;
+
 use cargo::{
     core::compiler::CompileMode,
     core::{Shell, Workspace},
@@ -17,10 +22,6 @@ use cargo_test_support::{
     tools, Execs, ProjectBuilder,
 };
 use cargo_util::paths::dylib_path_envvar;
-use std::env;
-use std::fs;
-use std::io::Read;
-use std::process::Stdio;
 
 #[cargo_test]
 fn cargo_compile_simple() {

tests/testsuite/build.rs

@@ -1,5 +1,10 @@
 //! Tests for build.rs scripts.
 
+use std::env;
+use std::fs;
+use std::io;
+use std::thread;
+
 use cargo_test_support::compare::assert_e2e;
 use cargo_test_support::install::cargo_home;
 use cargo_test_support::paths::CargoPathExt;
@@ -12,10 +17,6 @@ use cargo_test_support::{
 };
 use cargo_test_support::{rustc_host, sleep_ms, slow_cpu_multiplier, symlink_supported};
 use cargo_util::paths::{self, remove_dir_all};
-use std::env;
-use std::fs;
-use std::io;
-use std::thread;
 
 #[cargo_test]
 fn custom_build_script_failed() {

tests/testsuite/build_script.rs

@@ -1,6 +1,7 @@
 //! Tests for build.rs rerun-if-env-changed and rustc-env
 
 use cargo_test_support::basic_manifest;
+use cargo_test_support::prelude::*;
 use cargo_test_support::project;
 use cargo_test_support::sleep_ms;
 use cargo_test_support::str;

tests/testsuite/build_script_env.rs

@@ -4,6 +4,7 @@
 // because MSVC link.exe just gives a warning on unknown flags (how helpful!),
 // and other linkers will return an error.
 
+use cargo_test_support::prelude::*;
 use cargo_test_support::registry::Package;
 use cargo_test_support::str;
 use cargo_test_support::{basic_bin_manifest, basic_lib_manifest, basic_manifest, project};