lua_pushvalue

3 files changed, 73 insertions, 1 deletions

diff --git a/tests/C/Makefile b/tests/C/Makefile
index bc153a5..7d943b9 100644
--- a/tests/C/Makefile
+++ b/tests/C/Makefile
@@ -8,4 +8,5 @@ all:
 	$(CC) $(CFLAGS) $(LIBS) lua_pushnumber.c  -o lua_pushnumber.out
 	$(CC) $(CFLAGS) $(LIBS) lua_pushinteger.c -o lua_pushinteger.out
 	$(CC) $(CFLAGS) $(LIBS) lua_pushstring.c  -o lua_pushstring.out
-	$(CC) $(CFLAGS) $(LIBS) lua_pushboolean.c  -o lua_pushboolean.out
\ No newline at end of file
+	$(CC) $(CFLAGS) $(LIBS) lua_pushboolean.c  -o lua_pushboolean.out
+	$(CC) $(CFLAGS) $(LIBS) lua_pushvalue.c  -o lua_pushvalue.out
\ No newline at end of file
diff --git a/tests/C/lua_pushvalue.c b/tests/C/lua_pushvalue.c
new file mode 100644
index 0000000..055ee23
--- /dev/null
+++ b/tests/C/lua_pushvalue.c
@@ -0,0 +1,24 @@
+#include <lua.h>
+#include <lualib.h>
+#include <lauxlib.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int main(void) {
+
+    lua_State *L = luaL_newstate();
+
+    luaL_openlibs(L);
+
+    lua_pushstring(L, "hello");
+
+    lua_pushvalue(L, -1);
+
+    printf("L->top(%d): %s\n", lua_gettop(L), luaL_typename(L, -1));
+    printf("L->top - 1(%d): %s\n", lua_gettop(L) - 1, luaL_typename(L, -2));
+
+    lua_close(L);
+
+    return 0;
+
+}
\ No newline at end of file
diff --git a/tests/lapi.js b/tests/lapi.js
index 6c5d7a4..8dd2680 100644
--- a/tests/lapi.js
+++ b/tests/lapi.js
@@ -168,4 +168,51 @@ test('lua_pushboolean', function (t) {
         true,
         "top is correct"
     );
+});
+
+
+test('lua_pushvalue', function (t) {
+    let L;
+    
+    t.plan(6);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lapi.lua_pushstring(L, "hello");
+
+        lapi.lua_pushvalue(L, -1);
+
+    }, "JS Lua program ran without error");
+
+    t.strictEqual(
+        lapi.lua_gettop(L),
+        2,
+        "top is correct"
+    );
+
+    t.strictEqual(
+        lauxlib.luaL_typename(L, -1),
+        "string",
+        "Correct element(s) on the stack"
+    );
+
+    t.strictEqual(
+        lauxlib.luaL_typename(L, -2),
+        "string",
+        "Correct element(s) on the stack"
+    );
+
+    t.strictEqual(
+        L.stack[lapi.lua_gettop(L)].value,
+        "hello",
+        "top is correct"
+    );
+
+    t.strictEqual(
+        L.stack[lapi.lua_gettop(L) - 1].value,
+        "hello",
+        "top is correct"
+    );
 });
\ No newline at end of file