1 files changed, 413 insertions, 0 deletions
diff --git a/third_party/rust/cc/tests/test.rs b/third_party/rust/cc/tests/test.rs
new file mode 100644
index 0000000000..3c9b4dc498
--- /dev/null
+++ b/third_party/rust/cc/tests/test.rs
@@ -0,0 +1,413 @@
+use crate::support::Test;
+
+mod support;
+
+// Some tests check that a flag is *not* present.  These tests might fail if the flag is set in the
+// CFLAGS or CXXFLAGS environment variables.  This function clears the CFLAGS and CXXFLAGS
+// variables to make sure that the tests can run correctly.
+fn reset_env() {
+    std::env::set_var("CFLAGS", "");
+    std::env::set_var("CXXFLAGS", "");
+}
+
+#[test]
+fn gnu_smoke() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc().file("foo.c").compile("foo");
+
+    test.cmd(0)
+        .must_have("-O2")
+        .must_have("foo.c")
+        .must_not_have("-g")
+        .must_have("-c")
+        .must_have("-ffunction-sections")
+        .must_have("-fdata-sections");
+    test.cmd(1).must_have(test.td.path().join("foo.o"));
+}
+
+#[test]
+fn gnu_opt_level_1() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc().opt_level(1).file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-O1").must_not_have("-O2");
+}
+
+#[test]
+fn gnu_opt_level_s() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc().opt_level_str("s").file("foo.c").compile("foo");
+
+    test.cmd(0)
+        .must_have("-Os")
+        .must_not_have("-O1")
+        .must_not_have("-O2")
+        .must_not_have("-O3")
+        .must_not_have("-Oz");
+}
+
+#[test]
+fn gnu_debug_fp_auto() {
+    let test = Test::gnu();
+    test.gcc().debug(true).file("foo.c").compile("foo");
+    test.cmd(0).must_have("-g");
+    test.cmd(0).must_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_debug_fp() {
+    let test = Test::gnu();
+    test.gcc().debug(true).file("foo.c").compile("foo");
+    test.cmd(0).must_have("-g");
+    test.cmd(0).must_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_debug_nofp() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .debug(true)
+        .force_frame_pointer(false)
+        .file("foo.c")
+        .compile("foo");
+    test.cmd(0).must_have("-g");
+    test.cmd(0).must_not_have("-fno-omit-frame-pointer");
+
+    let test = Test::gnu();
+    test.gcc()
+        .force_frame_pointer(false)
+        .debug(true)
+        .file("foo.c")
+        .compile("foo");
+    test.cmd(0).must_have("-g");
+    test.cmd(0).must_not_have("-fno-omit-frame-pointer");
+}
+
+#[test]
+fn gnu_warnings_into_errors() {
+    let test = Test::gnu();
+    test.gcc()
+        .warnings_into_errors(true)
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-Werror");
+}
+
+#[test]
+fn gnu_warnings() {
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(true)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-Wall").must_have("-Wextra");
+}
+
+#[test]
+fn gnu_extra_warnings0() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(true)
+        .extra_warnings(false)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-Wall").must_not_have("-Wextra");
+}
+
+#[test]
+fn gnu_extra_warnings1() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(false)
+        .extra_warnings(true)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_not_have("-Wall").must_have("-Wextra");
+}
+
+#[test]
+fn gnu_warnings_overridable() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .warnings(true)
+        .flag("-Wno-missing-field-initializers")
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0)
+        .must_have_in_order("-Wall", "-Wno-missing-field-initializers");
+}
+
+#[test]
+fn gnu_x86_64() {
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("x86_64-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_have("-fPIC").must_have("-m64");
+    }
+}
+
+#[test]
+fn gnu_x86_64_no_pic() {
+    reset_env();
+
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("x86_64-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .pic(false)
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_not_have("-fPIC");
+    }
+}
+
+#[test]
+fn gnu_i686() {
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("i686-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_have("-m32");
+    }
+}
+
+#[test]
+fn gnu_i686_pic() {
+    for vendor in &["unknown-linux-gnu", "apple-darwin"] {
+        let target = format!("i686-{}", vendor);
+        let test = Test::gnu();
+        test.gcc()
+            .pic(true)
+            .target(&target)
+            .host(&target)
+            .file("foo.c")
+            .compile("foo");
+
+        test.cmd(0).must_have("-fPIC");
+    }
+}
+
+#[test]
+fn gnu_x86_64_no_plt() {
+    let target = "x86_64-unknown-linux-gnu";
+    let test = Test::gnu();
+    test.gcc()
+        .pic(true)
+        .use_plt(false)
+        .target(&target)
+        .host(&target)
+        .file("foo.c")
+        .compile("foo");
+    test.cmd(0).must_have("-fno-plt");
+}
+
+#[test]
+fn gnu_set_stdlib() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .cpp_set_stdlib(Some("foo"))
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_not_have("-stdlib=foo");
+}
+
+#[test]
+fn gnu_include() {
+    let test = Test::gnu();
+    test.gcc().include("foo/bar").file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-I").must_have("foo/bar");
+}
+
+#[test]
+fn gnu_define() {
+    let test = Test::gnu();
+    test.gcc()
+        .define("FOO", "bar")
+        .define("BAR", None)
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-DFOO=bar").must_have("-DBAR");
+}
+
+#[test]
+fn gnu_compile_assembly() {
+    let test = Test::gnu();
+    test.gcc().file("foo.S").compile("foo");
+    test.cmd(0).must_have("foo.S");
+}
+
+#[test]
+fn gnu_shared() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .file("foo.c")
+        .shared_flag(true)
+        .static_flag(false)
+        .compile("foo");
+
+    test.cmd(0).must_have("-shared").must_not_have("-static");
+}
+
+#[test]
+fn gnu_flag_if_supported() {
+    reset_env();
+
+    if cfg!(windows) {
+        return;
+    }
+    let test = Test::gnu();
+    test.gcc()
+        .file("foo.c")
+        .flag("-v")
+        .flag_if_supported("-Wall")
+        .flag_if_supported("-Wflag-does-not-exist")
+        .flag_if_supported("-std=c++11")
+        .compile("foo");
+
+    test.cmd(0)
+        .must_have("-v")
+        .must_have("-Wall")
+        .must_not_have("-Wflag-does-not-exist")
+        .must_not_have("-std=c++11");
+}
+
+#[test]
+fn gnu_flag_if_supported_cpp() {
+    if cfg!(windows) {
+        return;
+    }
+    let test = Test::gnu();
+    test.gcc()
+        .cpp(true)
+        .file("foo.cpp")
+        .flag_if_supported("-std=c++11")
+        .compile("foo");
+
+    test.cmd(0).must_have("-std=c++11");
+}
+
+#[test]
+fn gnu_static() {
+    reset_env();
+
+    let test = Test::gnu();
+    test.gcc()
+        .file("foo.c")
+        .shared_flag(false)
+        .static_flag(true)
+        .compile("foo");
+
+    test.cmd(0).must_have("-static").must_not_have("-shared");
+}
+
+#[test]
+fn msvc_smoke() {
+    reset_env();
+
+    let test = Test::msvc();
+    test.gcc().file("foo.c").compile("foo");
+
+    test.cmd(0)
+        .must_have("-O2")
+        .must_have("foo.c")
+        .must_not_have("-Z7")
+        .must_have("-c")
+        .must_have("-MD");
+    test.cmd(1).must_have(test.td.path().join("foo.o"));
+}
+
+#[test]
+fn msvc_opt_level_0() {
+    reset_env();
+
+    let test = Test::msvc();
+    test.gcc().opt_level(0).file("foo.c").compile("foo");
+
+    test.cmd(0).must_not_have("-O2");
+}
+
+#[test]
+fn msvc_debug() {
+    let test = Test::msvc();
+    test.gcc().debug(true).file("foo.c").compile("foo");
+    test.cmd(0).must_have("-Z7");
+}
+
+#[test]
+fn msvc_include() {
+    let test = Test::msvc();
+    test.gcc().include("foo/bar").file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-I").must_have("foo/bar");
+}
+
+#[test]
+fn msvc_define() {
+    let test = Test::msvc();
+    test.gcc()
+        .define("FOO", "bar")
+        .define("BAR", None)
+        .file("foo.c")
+        .compile("foo");
+
+    test.cmd(0).must_have("-DFOO=bar").must_have("-DBAR");
+}
+
+#[test]
+fn msvc_static_crt() {
+    let test = Test::msvc();
+    test.gcc().static_crt(true).file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-MT");
+}
+
+#[test]
+fn msvc_no_static_crt() {
+    let test = Test::msvc();
+    test.gcc().static_crt(false).file("foo.c").compile("foo");
+
+    test.cmd(0).must_have("-MD");
+}