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Add tests for check-cfg config of unexpected_cfgs lint
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‎tests/testsuite/check_cfg.rs‎

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Original file line numberDiff line numberDiff line change
@@ -496,3 +496,328 @@ fn build_script_test() {
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.with_stdout_contains_n("test [..] ... ok", 3)
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_simple() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(has_foo)", "cfg(has_bar, values(\"yes\", \"no\"))"] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("check -v")
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.with_stderr_contains(x!("rustc" => "cfg" of "has_foo"))
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.with_stderr_contains(x!("rustc" => "cfg" of "has_bar" with "yes" "no"))
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_workspace() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[workspace]
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members = ["foo/"]
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[workspace.lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(has_foo)"] }
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"#,
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)
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.file(
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"foo/Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints]
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workspace = true
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"#,
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)
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.file("foo/src/main.rs", "fn main() {}")
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.build();
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p.cargo("check -v")
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.with_stderr_contains(x!("rustc" => "cfg" of "has_foo"))
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.with_stderr_does_not_contain("unexpected_cfgs")
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_workspace_not_inherited() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[workspace]
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members = ["foo/"]
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[workspace.lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(has_foo)"] }
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"#,
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)
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.file(
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"foo/Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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"#,
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)
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.file("foo/src/main.rs", "fn main() {}")
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.build();
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p.cargo("check -v")
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.with_stderr_does_not_contain(x!("rustc" => "cfg" of "has_foo"))
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.with_stderr_does_not_contain("unexpected_cfgs")
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_invalid_position() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints.rust]
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use_bracket = { level = "warn", check-cfg = ["cfg(has_foo)"] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("check -v")
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.with_stderr_contains("[..]unused manifest key: `lints.rust.use_bracket.check-cfg`[..]")
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.with_stderr_does_not_contain(x!("rustc" => "cfg" of "has_foo"))
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_invalid_empty() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints.rust]
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unexpected_cfgs = { }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("check")
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.with_stderr_contains("[..]missing field `level`[..]")
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.run_expect_error();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_invalid_not_list() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = "cfg()" }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("check")
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.with_stderr_contains(
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"[..]`lints.rust.unexpected_cfgs.check-cfg` must be a list of string[..]",
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)
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_invalid_not_list_string() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = [12] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("check")
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.with_stderr_contains(
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"[..]`lints.rust.unexpected_cfgs.check-cfg` must be a list of string[..]",
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)
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_and_features() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[features]
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my_feature = []
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alloc = []
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(has_foo)", "cfg(has_bar, values(\"yes\", \"no\"))"] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("check -v")
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.with_stderr_contains(x!("rustc" => "cfg" of "has_foo"))
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.with_stderr_contains(x!("rustc" => "cfg" of "has_bar" with "yes" "no"))
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.with_stderr_contains(x!("rustc" => "cfg" of "feature" with "alloc" "my_feature"))
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_with_cargo_doc() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(has_foo)"] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("doc -v")
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.with_stderr_contains(x!("rustdoc" => "cfg" of "has_foo"))
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_with_cargo_test() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.1.0"
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edition = "2015"
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(has_foo)"] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.build();
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p.cargo("test -v")
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.with_stderr_contains(x!("rustc" => "cfg" of "has_foo"))
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_and_build_script() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.0.1"
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edition = "2021"
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build = "build.rs"
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(bar)"] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.file(
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"build.rs",
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r#"fn main() { println!("cargo::rustc-check-cfg=cfg(foo)"); }"#,
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)
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.build();
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p.cargo("check -v")
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.with_stderr_contains(x!("rustc" => "cfg" of "foo")) // from build.rs
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.with_stderr_contains(x!("rustc" => "cfg" of "bar")) // from config
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.run();
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}
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#[cargo_test(>=1.79, reason = "--check-cfg was stabilized in Rust 1.79")]
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fn config_features_and_build_script() {
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let p = project()
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.file(
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"Cargo.toml",
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r#"
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[package]
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name = "foo"
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version = "0.0.1"
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edition = "2021"
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build = "build.rs"
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[features]
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serde = []
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json = []
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[lints.rust]
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unexpected_cfgs = { level = "warn", check-cfg = ["cfg(bar)"] }
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"#,
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)
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.file("src/main.rs", "fn main() {}")
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.file(
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"build.rs",
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r#"fn main() { println!("cargo::rustc-check-cfg=cfg(foo)"); }"#,
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)
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.build();
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p.cargo("check -v")
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.with_stderr_contains(x!("rustc" => "cfg" of "foo")) // from build.rs
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.with_stderr_contains(x!("rustc" => "cfg" of "bar")) // from config
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.with_stderr_contains(x!("rustc" => "cfg" of "feature" with "json" "serde")) // features
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.with_stderr_contains(x!("rustc" => "cfg" of "docsrs")) // Cargo well known
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.run();
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}

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