test(c-api) Add tests for the wasmer_is_*_available API.

Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "abort_on_panic"
 version = "2.0.0"
@@ -723,9 +725,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.8.2"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f26ecb66b4bdca6c1409b40fb255eefc2bd4f6d135dab3c3124f80ffa2a9661e"
+checksum = "17392a012ea30ef05a610aa97dfb49496e71c9f676b27879922ea5bdf60d9d3f"
 dependencies = [
  "atty",
  "humantime",
@@ -984,9 +986,9 @@ dependencies = [
 
 [[package]]
 name = "inline-c"
-version = "0.1.4"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5db7d6323d3b700eec996bc5d60ffed2249f6bc63d88dec0681d2158115e5ed7"
+checksum = "194a0c4736432e499db196f6e18e9988935a88f69b2881b5ce5f486f603839ea"
 dependencies = [
  "assert_cmd",
  "cc",
@@ -1001,12 +1003,13 @@ dependencies = [
 
 [[package]]
 name = "inline-c-macro"
-version = "0.1.0"
+version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "18417ebfdcd2ffc446b55558a66ce4e1d3a7127af7889a1014288aabc8dcbf2d"
+checksum = "17f5621ec7adacda881d7c2826c064f5c29c72fd44333f97df61b458a583ae15"
 dependencies = [
  "proc-macro2",
  "quote",
+ "rustc_version 0.3.3",
 ]
 
 [[package]]
@@ -1504,9 +1507,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.8"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "991431c3519a3f36861882da93630ce66b52918dcf1b8e2fd66b397fc96f28df"
+checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
 dependencies = [
  "proc-macro2",
 ]

lib/c-api/Cargo.toml

@@ -36,12 +36,9 @@ serde = { version = "1", optional = true, features = ["derive"] }
 thiserror = "1"
 typetag = { version = "0.1", optional = true }
 paste = "1.0"
-# for generating code in the same way thot the wasm-c-api does
-# Commented out for now until we can find a solution to the exported function problem
-# wasmer-wasm-c-api = { version = "1.0.2", path = "crates/wasm-c-api" }
 
 [dev-dependencies]
-inline-c = "0.1.4"
+inline-c = "0.1.5"
 
 [features]
 default = [

lib/c-api/build.rs

@@ -525,6 +525,7 @@ fn build_inline_c_env_vars() {
         let target = env::var("TARGET").unwrap();
         assert_eq!(shared_object_dir.file_name(), Some(OsStr::new(&target)));
     }
+
     shared_object_dir.push(env::var("PROFILE").unwrap());
 
     let shared_object_dir = shared_object_dir.as_path().to_string_lossy();
@@ -535,8 +536,11 @@ fn build_inline_c_env_vars() {
     // * `-I`, add `include_dir` to include search path,
     // * `-L`, add `shared_object_dir` to library search path,
     // * `-D_DEBUG`, enable debug mode to enable `assert.h`.
+    // * `-D_CRT_SECURE_NO_WARNINGS`, disable security features in the
+    //   Windows C runtime, which allows to use `getenv` without any
+    //   warnings.
     println!(
-        "cargo:rustc-env=INLINE_C_RS_CFLAGS=-I{I} -L{L} -D_DEBUG",
+        "cargo:rustc-env=INLINE_C_RS_CFLAGS=-I{I} -L{L} -D_DEBUG -D_CRT_SECURE_NO_WARNINGS",
         I = include_dir,
         L = shared_object_dir.clone(),
     );

lib/c-api/src/wasm_c_api/unstable/engine.rs

@@ -58,6 +58,11 @@ pub extern "C" fn wasmer_is_compiler_available(compiler: wasmer_compiler_t) -> b
     }
 }
 
+#[no_mangle]
+pub extern "C" fn wasmer_is_headless() -> bool {
+    !cfg!(feature = "compiler")
+}
+
 #[no_mangle]
 pub extern "C" fn wasmer_is_engine_available(engine: wasmer_engine_t) -> bool {
     match engine {
@@ -67,3 +72,102 @@ pub extern "C" fn wasmer_is_engine_available(engine: wasmer_engine_t) -> bool {
         _ => false,
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use inline_c::assert_c;
+    use std::env::{remove_var, set_var};
+
+    #[test]
+    fn test_wasmer_is_headless() {
+        set_var(
+            "COMPILER",
+            if cfg!(feature = "compiler") { "0" } else { "1" },
+        );
+
+        (assert_c! {
+            #include "tests/wasmer_wasm.h"
+            #include <stdlib.h>
+
+            int main() {
+                assert(wasmer_is_headless() == (getenv("COMPILER")[0] == '1'));
+
+                return 0;
+            }
+        })
+        .success();
+
+        remove_var("COMPILER");
+    }
+
+    #[test]
+    fn test_wasmer_is_compiler_available() {
+        set_var(
+            "CRANELIFT",
+            if cfg!(feature = "cranelift") {
+                "1"
+            } else {
+                "0"
+            },
+        );
+        set_var("LLVM", if cfg!(feature = "llvm") { "1" } else { "0" });
+        set_var(
+            "SINGLEPASS",
+            if cfg!(feature = "singlepass") {
+                "1"
+            } else {
+                "0"
+            },
+        );
+
+        (assert_c! {
+            #include "tests/wasmer_wasm.h"
+            #include <stdlib.h>
+
+            int main() {
+                assert(wasmer_is_compiler_available(CRANELIFT) == (getenv("CRANELIFT")[0] == '1'));
+                assert(wasmer_is_compiler_available(LLVM) == (getenv("LLVM")[0] == '1'));
+                assert(wasmer_is_compiler_available(SINGLEPASS) == (getenv("SINGLEPASS")[0] == '1'));
+
+                return 0;
+            }
+        })
+        .success();
+
+        remove_var("CRANELIFT");
+        remove_var("LLVM");
+        remove_var("SINGLEPASS");
+    }
+
+    #[test]
+    fn test_wasmer_is_engine_available() {
+        set_var("JIT", if cfg!(feature = "jit") { "1" } else { "0" });
+        set_var("NATIVE", if cfg!(feature = "native") { "1" } else { "0" });
+        set_var(
+            "OBJECT_FILE",
+            if cfg!(feature = "object-file") {
+                "1"
+            } else {
+                "0"
+            },
+        );
+
+        (assert_c! {
+            #include "tests/wasmer_wasm.h"
+            #include <stdlib.h>
+
+            int main() {
+                assert(wasmer_is_engine_available(JIT) == (getenv("JIT")[0] == '1'));
+                assert(wasmer_is_engine_available(NATIVE) == (getenv("NATIVE")[0] == '1'));
+                assert(wasmer_is_engine_available(OBJECT_FILE) == (getenv("OBJECT_FILE")[0] == '1'));
+
+                return 0;
+            }
+        })
+        .success();
+
+        remove_var("JIT");
+        remove_var("NATIVE");
+        remove_var("OBJECT_FILE");
+    }
+}