From 4eea48935f2e0ea1267d314f2900af2a1a4b8b02 Mon Sep 17 00:00:00 2001
From: Benoit Giannangeli <benoit.giannangeli@boursorama.fr>
Date: Fri, 17 Feb 2017 07:56:12 +0100
Subject: lua_pop

---
 README.md         |  2 +-
 src/lapi.js       |  3 ++-
 tests/C/Makefile  |  3 ++-
 tests/C/lua_pop.c | 24 ++++++++++++++++++++++++
 tests/lapi.js     | 30 ++++++++++++++++++++++++++++++
 5 files changed, 59 insertions(+), 3 deletions(-)
 create mode 100644 tests/C/lua_pop.c

diff --git a/README.md b/README.md
index 5d52e2e..fb727b4 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,7 @@
     - [x] lua_toboolean
     - [x] lua_pushjsclosure (lua_pushcclosure)
     - [x] lua_pushjsfunction (lua_pushcfunction)
+    - [x] lua_pop
     - [ ] lua_absindex
     - [ ] lua_arith
     - [ ] lua_call
@@ -92,7 +93,6 @@
     - [ ] lua_numbertointeger
     - [ ] lua_pcall
     - [ ] lua_pcallk
-    - [ ] lua_pop
     - [ ] lua_pushfstring
     - [ ] lua_pushglobaltable
     - [ ] lua_pushlightuserdata
diff --git a/src/lapi.js b/src/lapi.js
index 2bef5a5..0e3c3bd 100644
--- a/src/lapi.js
+++ b/src/lapi.js
@@ -333,4 +333,5 @@ module.exports.lua_toboolean      = lua_toboolean;
 module.exports.lua_tolstring      = lua_tolstring;
 module.exports.lua_tostring       = lua_tostring;
 module.exports.lua_callk          = lua_callk;
-module.exports.lua_call           = lua_call;
\ No newline at end of file
+module.exports.lua_call           = lua_call;
+module.exports.lua_pop            = lua_pop;
\ No newline at end of file
diff --git a/tests/C/Makefile b/tests/C/Makefile
index 6d21b19..52475ec 100644
--- a/tests/C/Makefile
+++ b/tests/C/Makefile
@@ -12,4 +12,5 @@ all:
 	$(CC) $(CFLAGS) $(LIBS) lua_pushvalue.c           -o lua_pushvalue.out
 	$(CC) $(CFLAGS) $(LIBS) lua_pushcclosure-light.c  -o lua_pushcclosure-light.out
 	$(CC) $(CFLAGS) $(LIBS) lua_call.c 				  -o lua_call.out
-	$(CC) $(CFLAGS) $(LIBS) lua_call-jsclosure.c      -o lua_call-jsclosure.out
\ No newline at end of file
+	$(CC) $(CFLAGS) $(LIBS) lua_call-jsclosure.c      -o lua_call-jsclosure.out
+	$(CC) $(CFLAGS) $(LIBS) lua_pop.c 		          -o lua_pop.out
\ No newline at end of file
diff --git a/tests/C/lua_pop.c b/tests/C/lua_pop.c
new file mode 100644
index 0000000..06b8ef1
--- /dev/null
+++ b/tests/C/lua_pop.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_pushstring(L, "world");
+
+    lua_pop(L, 1);
+
+    printf("L->top(%d): %s\n", lua_gettop(L), lua_tostring(L, -1));
+
+    lua_close(L);
+
+    return 0;
+
+}
\ No newline at end of file
diff --git a/tests/lapi.js b/tests/lapi.js
index de7a401..fa1fb59 100644
--- a/tests/lapi.js
+++ b/tests/lapi.js
@@ -348,4 +348,34 @@ test('lua_call (calling a JS closure)', function (t) {
         "upvalue hello !",
         "top is correct"
     );
+});
+
+
+test('lua_pop', function (t) {
+    let L;
+    
+    t.plan(3);
+
+    t.doesNotThrow(function () {
+
+        L = lauxlib.luaL_newstate();
+
+        lapi.lua_pushstring(L, "hello");
+        lapi.lua_pushstring(L, "world");
+
+        lapi.lua_pop(L, 1);
+
+    }, "JS Lua program ran without error");
+
+    t.strictEqual(
+        lapi.lua_gettop(L),
+        1,
+        "top is correct"
+    );
+
+    t.strictEqual(
+        lapi.lua_tostring(L, -1),
+        "hello",
+        "Correct element(s) on the stack"
+    );
 });
\ No newline at end of file
-- 
cgit v1.2.3-54-g00ecf