Final fixes for make test-capi on windows-msvc

- .wasm files should always be opened in "rb" mode
- open_memstream doesn't exist on Windows, use tempfile() instead
- remove .obj and .exe files when the test finish

Cargo.lock

@@ -3054,6 +3054,14 @@ dependencies = [
  "wasmer-compiler-singlepass",
 ]
 
+[[package]]
+name = "wasmer-capi-examples-runner"
+version = "0.1.0"
+dependencies = [
+ "cc",
+ "target-lexicon 0.11.2",
+]
+
 [[package]]
 name = "wasmer-cli"
 version = "3.0.0-beta"

Cargo.toml

@@ -47,6 +47,7 @@ members = [
     "lib/wasi-experimental-io-devices",
     "lib/wasi-local-networking",
     "lib/c-api/tests/wasmer-c-api-test-runner",
+    "lib/c-api/examples/wasmer-capi-examples-runner",
     "lib/types",
     "tests/wasi-wast",
     "tests/lib/wast",

lib/c-api/examples/Makefile

@@ -4,14 +4,26 @@ $(info Using provided WASMER_DIR=$(WASMER_DIR))
 
 ROOT_DIR:=$(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
 
+MSVC_CFLAGS:=""
+MSVC_LDFLAGS:=""
+MSVC_LDLIBS:=""
+
 ifeq (,$(wildcard $(WASMER_DIR)/bin/wasmer))
-	CFLAGS = -g -I$(ROOT_DIR)/../tests -I$(WASMER_DIR)/include
+	CFLAGS = -g -I$(ROOT_DIR)/ -I$(WASMER_DIR)/include
 	LDFLAGS = -Wl,-rpath,$(WASMER_DIR)/lib
 	LDLIBS = -L$(WASMER_DIR)/lib -lwasmer
+
+	MSVC_CFLAGS:= /DEBUG /I $(ROOT_DIR)/ /I $(WASMER_DIR)/include
+	MSVC_LDFLAGS:= ""
+	MSVC_LDLIBS:= /LIBPATH:$(WASMER_DIR)/lib wasmer.dll.lib
 else
-	CFLAGS = -g -I$(ROOT_DIR)/../tests -I$(shell $(WASMER_DIR)/bin/wasmer config --includedir)
+	CFLAGS = -g -I$(ROOT_DIR)/ -I$(shell $(WASMER_DIR)/bin/wasmer config --includedir)
 	LDFLAGS = -Wl,-rpath,$(shell $(WASMER_DIR)/bin/wasmer config --libdir)
 	LDLIBS = $(shell $(WASMER_DIR)/bin/wasmer config --libs)
+
+	MSVC_CFLAGS:= /DEBUG /I $(ROOT_DIR)/ /I $(shell $(WASMER_DIR)/bin/wasmer config --includedir)
+	MSVC_LDFLAGS:= ""
+	MSVC_LDLIBS:= /LIBPATH:$(shell $(WASMER_DIR)/bin/wasmer config --libs) wasmer.dll.lib
 endif
 
 $(info * CFLAGS: $(CFLAGS))
@@ -20,44 +32,10 @@ $(info * LDLIBS: $(LDLIBS))
 
 ALL = deprecated-header early-exit instance imports-exports exports-function exports-global memory memory2 features wasi
 
-.SILENT: deprecated-header deprecated-header.o
-deprecated-header: deprecated-header.o
-
-.SILENT: early-exit early-exit.o
-early-exit: early-exit.o
-
-.SILENT: instance instance.o
-instance: instance.o
-
-.SILENT: imports-exports imports-exports.o
-imports-exports: imports-exports.o
-
-.SILENT: exports-function exports-function.o
-exports-function: exports-function.o
-
-.SILENT: exports-global exports-global.o
-exports-global: exports-global.o
-
-.SILENT: memory memory.o
-memory: memory.o
-
-.SILENT: memory2 memory2.o
-memory2: memory2.o
-
-.SILENT: features features.o
-features: features.o
-
-.SILENT: wasi wasi.o
-wasi: wasi.o
-
-.PHONY: all
-all: $(ALL)
-
 .PHONY: run
 .SILENT: run
-run: $(ALL)
+run: 
-	set -o errexit; \
+	WASMER_DIR="$(WASMER_DIR)" ROOT_DIR="$(ROOT_DIR)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" LDLIBS="$(LDLIBS)" cargo test --manifest-path="./wasmer-capi-examples-runner/Cargo.toml" -- --nocapture
-	$(foreach example,$?,echo Running \"$(example)\" example; ./$(example); echo;)
 
 .SILENT: clean
 .PHONY: clean

lib/c-api/examples/early-exit.c

@@ -45,7 +45,7 @@ int main(int argc, const char *argv[]) {
 
   // Load binary.
   printf("Loading binary...\n");
-  FILE *file = fopen("assets/call_trap.wasm", "r");
+  FILE *file = fopen("assets/call_trap.wasm", "rb");
   if (!file) {
     printf("> Error loading module!\n");
     return 1;

lib/c-api/examples/wasi.c

@@ -38,7 +38,7 @@ int main(int argc, const char* argv[]) {
 
   // Load binary.
   printf("Loading binary...\n");
-  FILE* file = fopen("assets/qjs.wasm", "r");
+  FILE* file = fopen("assets/qjs.wasm", "rb");
   if (!file) {
     printf("> Error loading module!\n");
     return 1;
@@ -49,7 +49,7 @@ int main(int argc, const char* argv[]) {
   wasm_byte_vec_t binary;
   wasm_byte_vec_new_uninitialized(&binary, file_size);
   if (fread(binary.data, file_size, 1, file) != 1) {
-    printf("> Error loading module!\n");
+    printf("> Error initializing module!\n");
     return 1;
   }
   fclose(file);
@@ -137,12 +137,12 @@ int main(int argc, const char* argv[]) {
   }
   printf("Call completed\n");
 
-  {
+  if(true) {
-    FILE *memory_stream;
-    char* stdout;
-    size_t stdout_size = 0;
 
-    memory_stream = open_memstream(&stdout, &stdout_size);
+    // NOTE: previously, this used open_memstream,
+    // which is not cross-platform
+    FILE *memory_stream = NULL;
+    memory_stream = tmpfile(); // stdio.h
 
     if (NULL == memory_stream) {
       printf("> Error creating a memory stream.\n");
@@ -161,15 +161,20 @@ int main(int argc, const char* argv[]) {
       }
 
       if (data_read_size > 0) {
-        stdout_size += data_read_size;
         fwrite(buffer, sizeof(char), data_read_size, memory_stream);
       }
     } while (BUF_SIZE == data_read_size);
 
+    // print memory_stream
+    rewind(memory_stream);
+    fputs("WASI Stdout: ", stdout);
+    char buffer2[256];
+    while (!feof(memory_stream)) {
+      if (fgets(buffer2, 256, memory_stream) == NULL) break;
+      fputs(buffer2, stdout);
+    }
+    fputs("\n", stdout);
     fclose(memory_stream);
-
-    printf("WASI Stdout: `%.*s`\n", (int) stdout_size, stdout);
-    free(stdout);
   }
 
 

lib/c-api/tests/Makefile

@@ -35,7 +35,7 @@ $(info * LDFLAGS: $(LDFLAGS))
 $(info * LDLIBS: $(LDLIBS))
 
 test: 
-	cargo test --manifest-path="./wasmer-c-api-test-runner/Cargo.toml" -- --nocapture
+	WASMER_DIR="$(WASMER_DIR)" ROOT_DIR="$(ROOT_DIR)" CFLAGS="$(CFLAGS)" LDFLAGS="$(LDFLAGS)" LDLIBS="$(LDLIBS)" cargo test --manifest-path="./wasmer-c-api-test-runner/Cargo.toml" -- --nocapture
 
 .SILENT: clean
 .PHONY: clean

lib/c-api/tests/wasmer-c-api-test-runner/command.bat

@@ -1 +0,0 @@
-"C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.33.31629\\bin\\HostX64\\x64\\cl.exe" -nologo -MD -O1 -Brepro -W4 "C:\\Users\\felix\\Development\\wasmer\\lib\\c-api\\tests\\wasmer-c-api-test-runner/../wasm-c-api/example/callback.c" /I "C:/Users/felix/Development/wasmer/package/include" /link /LIBPATH:"C:/Users/felix/Development/wasmer/package/lib" "C:/Users/felix/Development/wasmer/package/lib/wasmer.dll.lib" /OUT:"C:\\Users\\felix\\Development\\wasmer\\lib\\c-api\\tests\\wasmer-c-api-test-runner/../wasm-c-api/example/callback.exe"

lib/c-api/tests/wasmer-c-api-test-runner/src/lib.rs

@@ -30,6 +30,36 @@ impl Config {
     }
 }
 
+
+#[derive(Default)]
+pub struct RemoveTestsOnDrop { }
+
+impl Drop for RemoveTestsOnDrop { 
+    fn drop(&mut self) {
+        let manifest_dir = env!("CARGO_MANIFEST_DIR");    
+        for entry in std::fs::read_dir(&manifest_dir).unwrap() {
+            let entry = entry.unwrap();
+            let path = entry.path();
+            let extension = path.extension().and_then(|s| s.to_str());
+            if extension == Some("obj") || extension == Some("exe") {
+                println!("removing {}", path.display());
+                let _ = std::fs::remove_file(&path);
+            }
+        }
+        if let Some(parent) = std::path::Path::new(&manifest_dir).parent() {
+            for entry in std::fs::read_dir(&parent).unwrap() {
+                let entry = entry.unwrap();
+                let path = entry.path();
+                let extension = path.extension().and_then(|s| s.to_str());
+                if extension == Some("obj") || extension == Some("exe") {
+                    println!("removing {}", path.display());
+                    let _ = std::fs::remove_file(&path);
+                }
+            }
+        }
+    }
+}
+
 const CAPI_BASE_TESTS: &[&str] = &[
     "wasm-c-api/example/callback",
     "wasm-c-api/example/memory",
@@ -56,15 +86,15 @@ const CAPI_BASE_TESTS_NOT_WORKING: &[&str] = &[
 #[test]
 fn test_ok() {
 
+    let _drop = RemoveTestsOnDrop::default();
     let config = Config::get();
     println!("config: {:#?}", config);
 
     let manifest_dir = env!("CARGO_MANIFEST_DIR");
-    
     let host = target_lexicon::HOST.to_string();
     let target = &host;
 
-    #[cfg(target_os = "windows")]
+    if target.contains("msvc") {
         for test in CAPI_BASE_TESTS.iter() {
 
             let mut build = cc::Build::new();
@@ -157,8 +187,7 @@ fn test_ok() {
             // -o wasm-c-api/example/callback
     
         }
-
+    } else {
-    #[cfg(not(target_os = "windows"))]
         for test in CAPI_BASE_TESTS.iter() {
 
             let mut command = std::process::Command::new("cc");
@@ -184,11 +213,18 @@ fn test_ok() {
             if !output.status.success() {
                 println!("stdout: {}", String::from_utf8_lossy(&output.stdout));
                 println!("stdout: {}", String::from_utf8_lossy(&output.stderr));
-            panic!("failed to compile {test}");
+                panic!("failed to execute {test}");
             }
         }
     }
 
+    for test in CAPI_BASE_TESTS.iter() {
+        let _ = std::fs::remove_file(&format!("{manifest_dir}/{test}.obj"));
+        let _ = std::fs::remove_file(&format!("{manifest_dir}/../{test}.exe"));
+        let _ = std::fs::remove_file(&format!("{manifest_dir}/../{test}"));
+    }
+ }
+
  #[cfg(test)]
  fn find_vcvars64(compiler: &cc::Tool) -> Option<String> {