Added emscripten env test

build/emtests.rs

@@ -12,7 +12,8 @@ use std::process::Command;
 static BANNER: &str = "// Rust test file autogenerated with cargo build (build/emtests.rs).
 // Please do NOT modify it by hand, as it will be reseted on next build.\n";
 
-const TESTS: [&str; 2] = [
+const TESTS: [&str; 3] = [
+    "emtests/env.c",
     "emtests/puts.c",
     "emtests/printf.c"
 ];

emtests/env.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdlib.h>
+int main()
+{   
+    printf("INIT\n");
+    const char* UNEXISTENT_ENVVAR = getenv("UNEXISTENT_ENVVAR");
+    printf("get UNEXISTENT_ENVVAR: %s\n",(UNEXISTENT_ENVVAR!=NULL)? UNEXISTENT_ENVVAR : "[NULL]");
+    printf("set UNEXISTENT_ENVVAR = SET\n");
+    putenv("UNEXISTENT_ENVVAR=SET");
+    UNEXISTENT_ENVVAR = getenv("UNEXISTENT_ENVVAR");
+    printf("get UNEXISTENT_ENVVAR: %s\n",(UNEXISTENT_ENVVAR!=NULL)? UNEXISTENT_ENVVAR : "[NULL]");
+    printf("END\n");
+}

emtests/env.output

@@ -0,0 +1,5 @@
+INIT
+get UNEXISTENT_ENVVAR: [NULL]
+set UNEXISTENT_ENVVAR = SET
+get UNEXISTENT_ENVVAR: SET
+END

src/emtests/env.rs

@@ -0,0 +1,4 @@
+#[test]
+fn test_env() {
+    assert_emscripten_output!("../../emtests/env.wasm", "env", vec![], "../../emtests/env.output");
+}

src/emtests/mod.rs

@@ -4,5 +4,6 @@
 // The _common module is not autogenerated, as it provides common macros for the emtests
 #[macro_use]
 mod _common;
+mod env;
 mod puts;
 mod printf;