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Add a run-make test for rustc --help and similar

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Zalathar 2024-11-08 00:11:21 +11:00
parent b91a3a0560
commit 8f7f9b93b2
5 changed files with 188 additions and 0 deletions
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1
src/tools/run-make-support/src/lib.rs
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@ -41,6 +41,7 @@ pub mod rfs {
pub use object;
pub use regex;
pub use serde_json;
pub use similar;
pub use wasmparser;
// tidy-alphabetical-end

29
tests/run-make/rustc-help/help-v.diff Normal file
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@ -0,0 +1,29 @@
@@ -51,10 +51,27 @@
Set a codegen option
-V, --version Print version info and exit
-v, --verbose Use verbose output
+ --extern NAME[=PATH]
+ Specify where an external rust library is located
+ --sysroot PATH Override the system root
+ --error-format human|json|short
+ How errors and other messages are produced
+ --json CONFIG Configure the JSON output of the compiler
+ --color auto|always|never
+ Configure coloring of output:
+ auto = colorize, if output goes to a tty (default);
+ always = always colorize output;
+ never = never colorize output
+ --diagnostic-width WIDTH
+ Inform rustc of the width of the output so that
+ diagnostics can be truncated to fit
+ --remap-path-prefix FROM=TO
+ Remap source names in all output (compiler messages
+ and output files)
+ @path Read newline separated options from `path`
Additional help:
-C help Print codegen options
-W help Print 'lint' options and default settings
-Z help Print unstable compiler options
- --help -v Print the full set of options rustc accepts

77
tests/run-make/rustc-help/help-v.stdout Normal file
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@ -0,0 +1,77 @@
Usage: rustc [OPTIONS] INPUT
Options:
-h, --help Display this message
--cfg SPEC Configure the compilation environment.
SPEC supports the syntax `NAME[="VALUE"]`.
--check-cfg SPEC
Provide list of expected cfgs for checking
-L [KIND=]PATH Add a directory to the library search path. The
optional KIND can be one of dependency, crate, native,
framework, or all (the default).
-l [KIND[:MODIFIERS]=]NAME[:RENAME]
Link the generated crate(s) to the specified native
library NAME. The optional KIND can be one of
static, framework, or dylib (the default).
Optional comma separated MODIFIERS
(bundle|verbatim|whole-archive|as-needed)
may be specified each with a prefix of either '+' to
enable or '-' to disable.
--crate-type [bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]
Comma separated list of types of crates
for the compiler to emit
--crate-name NAME
Specify the name of the crate being built
--edition 2015|2018|2021|2024
Specify which edition of the compiler to use when
compiling code. The default is 2015 and the latest
stable edition is 2021.
--emit [asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]
Comma separated list of types of output for the
compiler to emit
--print [crate-name|file-names|sysroot|target-libdir|cfg|check-cfg|calling-conventions|target-list|target-cpus|target-features|relocation-models|code-models|tls-models|target-spec-json|all-target-specs-json|native-static-libs|stack-protector-strategies|link-args|deployment-target]
Compiler information to print on stdout
-g Equivalent to -C debuginfo=2
-O Equivalent to -C opt-level=2
-o FILENAME Write output to <filename>
--out-dir DIR Write output to compiler-chosen filename in <dir>
--explain OPT Provide a detailed explanation of an error message
--test Build a test harness
--target TARGET Target triple for which the code is compiled
-A, --allow LINT Set lint allowed
-W, --warn LINT Set lint warnings
--force-warn LINT
Set lint force-warn
-D, --deny LINT Set lint denied
-F, --forbid LINT Set lint forbidden
--cap-lints LEVEL
Set the most restrictive lint level. More restrictive
lints are capped at this level
-C, --codegen OPT[=VALUE]
Set a codegen option
-V, --version Print version info and exit
-v, --verbose Use verbose output
--extern NAME[=PATH]
Specify where an external rust library is located
--sysroot PATH Override the system root
--error-format human|json|short
How errors and other messages are produced
--json CONFIG Configure the JSON output of the compiler
--color auto|always|never
Configure coloring of output:
auto = colorize, if output goes to a tty (default);
always = always colorize output;
never = never colorize output
--diagnostic-width WIDTH
Inform rustc of the width of the output so that
diagnostics can be truncated to fit
--remap-path-prefix FROM=TO
Remap source names in all output (compiler messages
and output files)
@path Read newline separated options from `path`
Additional help:
-C help Print codegen options
-W help Print 'lint' options and default settings
-Z help Print unstable compiler options

60
tests/run-make/rustc-help/help.stdout Normal file
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@ -0,0 +1,60 @@
Usage: rustc [OPTIONS] INPUT
Options:
-h, --help Display this message
--cfg SPEC Configure the compilation environment.
SPEC supports the syntax `NAME[="VALUE"]`.
--check-cfg SPEC
Provide list of expected cfgs for checking
-L [KIND=]PATH Add a directory to the library search path. The
optional KIND can be one of dependency, crate, native,
framework, or all (the default).
-l [KIND[:MODIFIERS]=]NAME[:RENAME]
Link the generated crate(s) to the specified native
library NAME. The optional KIND can be one of
static, framework, or dylib (the default).
Optional comma separated MODIFIERS
(bundle|verbatim|whole-archive|as-needed)
may be specified each with a prefix of either '+' to
enable or '-' to disable.
--crate-type [bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]
Comma separated list of types of crates
for the compiler to emit
--crate-name NAME
Specify the name of the crate being built
--edition 2015|2018|2021|2024
Specify which edition of the compiler to use when
compiling code. The default is 2015 and the latest
stable edition is 2021.
--emit [asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]
Comma separated list of types of output for the
compiler to emit
--print [crate-name|file-names|sysroot|target-libdir|cfg|check-cfg|calling-conventions|target-list|target-cpus|target-features|relocation-models|code-models|tls-models|target-spec-json|all-target-specs-json|native-static-libs|stack-protector-strategies|link-args|deployment-target]
Compiler information to print on stdout
-g Equivalent to -C debuginfo=2
-O Equivalent to -C opt-level=2
-o FILENAME Write output to <filename>
--out-dir DIR Write output to compiler-chosen filename in <dir>
--explain OPT Provide a detailed explanation of an error message
--test Build a test harness
--target TARGET Target triple for which the code is compiled
-A, --allow LINT Set lint allowed
-W, --warn LINT Set lint warnings
--force-warn LINT
Set lint force-warn
-D, --deny LINT Set lint denied
-F, --forbid LINT Set lint forbidden
--cap-lints LEVEL
Set the most restrictive lint level. More restrictive
lints are capped at this level
-C, --codegen OPT[=VALUE]
Set a codegen option
-V, --version Print version info and exit
-v, --verbose Use verbose output
Additional help:
-C help Print codegen options
-W help Print 'lint' options and default settings
-Z help Print unstable compiler options
--help -v Print the full set of options rustc accepts

21
tests/run-make/rustc-help/rmake.rs Normal file
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@ -0,0 +1,21 @@
// Tests `rustc --help` and similar invocations against snapshots and each other.
use run_make_support::{bare_rustc, diff, similar};
fn main() {
// `rustc --help`
let help = bare_rustc().arg("--help").run().stdout_utf8();
diff().expected_file("help.stdout").actual_text("(rustc --help)", &help).run();
// `rustc` should be the same as `rustc --help`
let bare = bare_rustc().run().stdout_utf8();
diff().expected_text("(rustc --help)", &help).actual_text("(rustc)", &bare).run();
// `rustc --help -v` should give a similar but longer help message
let help_v = bare_rustc().arg("--help").arg("-v").run().stdout_utf8();
diff().expected_file("help-v.stdout").actual_text("(rustc --help -v)", &help_v).run();
// Check the diff between `rustc --help` and `rustc --help -v`.
let help_v_diff = similar::TextDiff::from_lines(&help, &help_v).unified_diff().to_string();
diff().expected_file("help-v.diff").actual_text("actual", &help_v_diff).run();
}