rewrite test-harness to rmake

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -96,7 +96,6 @@ run-make/metadata-dep-info/Makefile
 run-make/min-global-align/Makefile
 run-make/missing-crate-dependency/Makefile
 run-make/mixing-libs/Makefile
-run-make/msvc-opt-minsize/Makefile
 run-make/native-link-modifier-bundle/Makefile
 run-make/native-link-modifier-whole-archive/Makefile
 run-make/no-alloc-shim/Makefile
@@ -163,7 +162,6 @@ run-make/target-cpu-native/Makefile
 run-make/target-specs/Makefile
 run-make/target-without-atomic-cas/Makefile
 run-make/test-benches/Makefile
-run-make/test-harness/Makefile
 run-make/thumb-none-cortex-m/Makefile
 run-make/thumb-none-qemu/Makefile
 run-make/track-path-dep-info/Makefile

src/tools/tidy/src/ui_tests.rs

@@ -13,7 +13,7 @@ use std::path::{Path, PathBuf};
 // should all be 1000 or lower. Limits significantly smaller than 1000 are also
 // desirable, because large numbers of files are unwieldy in general. See issue
 // #73494.
-const ENTRY_LIMIT: u32 = 900;
+const ENTRY_LIMIT: u32 = 901;
 // FIXME: The following limits should be reduced eventually.
 
 const ISSUES_ENTRY_LIMIT: u32 = 1672;

tests/run-make/include-all-symbols-linking/rmake.rs

@@ -7,7 +7,9 @@
 // See https://github.com/rust-lang/rust/pull/95604
 // See https://github.com/rust-lang/rust/issues/47384
 
-//FIXME(Oneirical): ignore flags: only linux and cross compile
+//@ only-linux
+// Reason: differences in object file formats on OSX and Windows
+// causes errors in the llvm_objdump step
 
 use run_make_support::{dynamic_lib_name, llvm_objdump, llvm_readobj, rustc};
 

tests/run-make/test-harness/Makefile

@@ -0,0 +1,25 @@
+// The way test suites run can be modified using configuration flags,
+// ignoring certain tests while running others. This test contains two
+// functions, one which must run and the other which must not. The standard
+// output is checked to verify that the ignore configuration is doing its job,
+// and that output is successfully minimized with the --quiet flag.
+// See https://github.com/rust-lang/rust/commit/f7ebe23ae185991b0fee05b32fbb3e29b89a41bf
+
+//@ ignore-cross-compile
+// Reason: the compiled binary is executed
+
+use run_make_support::{run, run_with_args, rustc};
+
+fn main() {
+    rustc().arg("--test").input("test-ignore-cfg.rs").cfg("ignorecfg").run();
+    // check that #[cfg_attr(..., ignore)] does the right thing.
+    run("test-ignore-cfg")
+        .assert_stdout_contains("shouldnotignore ... ok")
+        .assert_stdout_contains("shouldignore ... ignored");
+    assert_eq!(
+        // One of the lines is exactly "i."
+        run_with_args("test-ignore-cfg", &["--quiet"]).stdout_utf8().lines().find(|&x| x == "i."),
+        Some("i.")
+    );
+    run_with_args("test-ignore-cfg", &["--quiet"]).assert_stdout_not_contains("should");
+}