8 files changed, 79 insertions, 0 deletions
diff --git a/test/rust-from-c/TARGETS b/test/rust-from-c/TARGETS
new file mode 100644
index 0000000..1cb8019
--- /dev/null
+++ b/test/rust-from-c/TARGETS
@@ -0,0 +1,23 @@
+{ "main":
+  { "type": ["@", "rules-cc", "CC", "binary"]
+  , "pure C": ["true"]
+  , "name": ["main"]
+  , "srcs": ["main.c"]
+  , "private-deps": [["./", "foo", "foo"]]
+  }
+, "test_foo":
+  { "type": ["rules/rust", "test"]
+  , "name": ["test_foo"]
+  , "crate_root": ["foo/foo_test.rs"]
+  , "stage": ["test_foo"]
+  , "deps": [["./", "foo", "foo"]]
+  }
+, "check_ints":
+  { "type": ["@", "rules-cc", "shell/test", "script"]
+  , "name": ["check_ints"]
+  , "test": ["check_ints.sh"]
+  , "deps": ["main"]
+  }
+, "TESTS":
+  {"type": "install", "deps": ["check_ints", "test_foo"], "tainted": ["test"]}
+}
diff --git a/test/rust-from-c/check_ints.sh b/test/rust-from-c/check_ints.sh
new file mode 100644
index 0000000..00780c3
--- /dev/null
+++ b/test/rust-from-c/check_ints.sh
@@ -0,0 +1,5 @@
+set -e
+
+for i in `seq 1 42`; do
+    ./main -$i | grep " -$i is $i"
+done
diff --git a/test/rust-from-c/foo/TARGETS b/test/rust-from-c/foo/TARGETS
new file mode 100644
index 0000000..17c66ba
--- /dev/null
+++ b/test/rust-from-c/foo/TARGETS
@@ -0,0 +1,15 @@
+{ "foo":
+  { "type": ["rules/rust", "library"]
+  , "name": ["foo"]
+  , "crate_root": ["foo.rs"]
+  , "c_hdrs": ["foo.h"]
+  , "stage": ["foo"]
+  , "deps": ["bar"]
+  }
+, "bar":
+  { "type": ["rules/rust", "library"]
+  , "name": ["bar"]
+  , "crate_root": ["bar.rs"]
+  , "stage": ["bar"]
+  }
+}
diff --git a/test/rust-from-c/foo/bar.rs b/test/rust-from-c/foo/bar.rs
new file mode 100644
index 0000000..61e68f4
--- /dev/null
+++ b/test/rust-from-c/foo/bar.rs
@@ -0,0 +1,3 @@
+pub fn bar(x: i32) -> i32 {
+    return x.abs();
+}
+\ No newline at end of file
diff --git a/test/rust-from-c/foo/foo.h b/test/rust-from-c/foo/foo.h
new file mode 100644
index 0000000..88deb2e
--- /dev/null
+++ b/test/rust-from-c/foo/foo.h
@@ -0,0 +1,2 @@
+#pragma once
+int foo(int);
diff --git a/test/rust-from-c/foo/foo.rs b/test/rust-from-c/foo/foo.rs
new file mode 100644
index 0000000..8735b67
--- /dev/null
+++ b/test/rust-from-c/foo/foo.rs
@@ -0,0 +1,6 @@
+extern crate bar;
+
+#[no_mangle]
+pub extern "C" fn foo(x: i32) -> i32 {
+    return bar::bar(x);
+}
diff --git a/test/rust-from-c/foo/foo_test.rs b/test/rust-from-c/foo/foo_test.rs
new file mode 100644
index 0000000..8b5de77
--- /dev/null
+++ b/test/rust-from-c/foo/foo_test.rs
@@ -0,0 +1,11 @@
+extern crate foo;
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_foo(){
+       assert_eq!(foo::foo(-7),7);
+    }
+}
+\ No newline at end of file
diff --git a/test/rust-from-c/main.c b/test/rust-from-c/main.c
new file mode 100644
index 0000000..0f69281
--- /dev/null
+++ b/test/rust-from-c/main.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int foo(int);
+
+int main(int argc, char **argv) {
+  if (argc < 2) {
+    fprintf(stderr, "Please provide one number as argument\n");
+    exit(1);
+  }
+  int x = atoi(argv[1]);
+  printf("absolute value of %d is %d\n", x, foo(x));
+  return 0;
+}