patch 7.4.1167

Problem:    No tests for "is" and "isnot" with the new variables.
Solution:   Add tests.

Author: brammool

src/testdir/test_viml.vim

@@ -958,6 +958,30 @@ func Test_type()
     call assert_false(v:null != 0)
     call assert_true(v:none == 0)
     call assert_false(v:none != 0)
+
+    call assert_true(v:false is v:false)
+    call assert_true(v:true is v:true)
+    call assert_true(v:none is v:none)
+    call assert_true(v:null is v:null)
+
+    call assert_false(v:false isnot v:false)
+    call assert_false(v:true isnot v:true)
+    call assert_false(v:none isnot v:none)
+    call assert_false(v:null isnot v:null)
+
+    call assert_false(v:false is 0)
+    call assert_false(v:true is 1)
+    call assert_false(v:true is v:false)
+    call assert_false(v:none is 0)
+    call assert_false(v:null is 0)
+    call assert_false(v:null is v:none)
+
+    call assert_true(v:false isnot 0)
+    call assert_true(v:true isnot 1)
+    call assert_true(v:true isnot v:false)
+    call assert_true(v:none isnot 0)
+    call assert_true(v:null isnot 0)
+    call assert_true(v:null isnot v:none)
 endfunc
 
 "-------------------------------------------------------------------------------

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1167,
 /**/
     1166,
 /**/