From 573a9c3b39bf1570a575ce3f077a33e752439165 Mon Sep 17 00:00:00 2001
From: Benoit Giannangeli <benoit.giannangeli@boursorama.fr>
Date: Thu, 16 Feb 2017 12:08:55 +0100
Subject: lua_pushvalue

---
 tests/C/Makefile        |  3 ++-
 tests/C/lua_pushvalue.c | 24 ++++++++++++++++++++++++
 tests/lapi.js           | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 73 insertions(+), 1 deletion(-)
 create mode 100644 tests/C/lua_pushvalue.c

(limited to 'tests')

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
-- 
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