--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -1955,7 +1955,6 @@ foreground()			Number	bring the Vim wind
 function({name} [, {arglist}] [, {dict}])
 				Funcref reference to function {name}
 garbagecollect([{atexit}])	none	free memory, breaking cyclic references
-garbagecollect_for_testing()	none	free memory right now
 get({list}, {idx} [, {def}])	any	get item {idx} from {list} or {def}
 get({dict}, {key} [, {def}])	any	get item {key} from {dict} or {def}
 getbufline({expr}, {lnum} [, {end}])
@@ -2203,6 +2202,13 @@ tagfiles()			List	tags files used
 tan({expr})			Float	tangent of {expr}
 tanh({expr})			Float	hyperbolic tangent of {expr}
 tempname()			String	name for a temporary file
+test_garbagecollect_now()	none	free memory right now for testing
+test_null_channel()		Channel	null value for testing
+test_null_dict()		Dict	null value for testing
+test_null_job()			Job	null value for testing
+test_null_list()		List	null value for testing
+test_null_partial()		Funcref	null value for testing
+test_null_string()		String	null value for testing
 timer_start({time}, {callback} [, {options}])
 				Number	create a timer
 timer_stop({timer})		none	stop a timer
@@ -3752,11 +3758,10 @@ garbagecollect([{atexit}])				*garbageco
 		collection will also be done when exiting Vim, if it wasn't
 		done before.  This is useful when checking for memory leaks.
 
-garbagecollect_for_testing()			 *garbagecollect_for_testing()*
-		Like garbagecollect(), but executed right away.  This must
-		only be called directly to avoid any structure to exist
-		internally, and |v:testing| must have been set before calling
-		any function.
+		The garbage collection is not done immediately but only when
+		it's safe to perform.  This is when waiting for the user to
+		type a character.  To force garbage collection immediately use
+		|test_garbagecollect_now()|.
 
 get({list}, {idx} [, {default}])			*get()*
 		Get item {idx} from |List| {list}.  When this item is not
@@ -7165,17 +7170,6 @@ taglist({expr})							*taglist()*
 		located by Vim. Refer to |tags-file-format| for the format of
 		the tags file generated by the different ctags tools.
 
-tempname()					*tempname()* *temp-file-name*
-		The result is a String, which is the name of a file that
-		doesn't exist.	It can be used for a temporary file.  The name
-		is different for at least 26 consecutive calls.  Example: >
-			:let tmpfile = tempname()
-			:exe "redir > " . tmpfile
-<		For Unix, the file will be in a private directory |tempfile|.
-		For MS-Windows forward slashes are used when the 'shellslash'
-		option is set or when 'shellcmdflag' starts with '-'.
-
-
 tan({expr})						*tan()*
 		Return the tangent of {expr}, measured in radians, as a |Float|
 		in the range [-inf, inf].
@@ -7200,6 +7194,44 @@ tanh({expr})						*tanh()*
 		{only available when compiled with the |+float| feature}
 
 
+tempname()					*tempname()* *temp-file-name*
+		The result is a String, which is the name of a file that
+		doesn't exist.	It can be used for a temporary file.  The name
+		is different for at least 26 consecutive calls.  Example: >
+			:let tmpfile = tempname()
+			:exe "redir > " . tmpfile
+<		For Unix, the file will be in a private directory |tempfile|.
+		For MS-Windows forward slashes are used when the 'shellslash'
+		option is set or when 'shellcmdflag' starts with '-'.
+
+
+test_garbagecollect_now()			 *test_garbagecollect_now()*
+		Like garbagecollect(), but executed right away.  This must
+		only be called directly to avoid any structure to exist
+		internally, and |v:testing| must have been set before calling
+		any function.
+
+test_null_channel()					*test_null_channel()*
+		Return a Channel that is null. Only useful for testing.
+		{only available when compiled with the +channel feature}
+
+test_null_dict()					*test_null_dict()*
+		Return a Dict that is null. Only useful for testing.
+
+test_null_job()						*test_null_job()*
+		Return a Job that is null. Only useful for testing.
+		{only available when compiled with the +job feature}
+
+test_null_list()					*test_null_list()*
+		Return a List that is null. Only useful for testing.
+
+test_null_partial()					*test_null_partial()*
+		Return a Partial that is null. Only useful for testing.
+
+test_null_string()					*test_null_string()*
+		Return a String that is null. Only useful for testing.
+
+
 							*timer_start()*
 timer_start({time}, {callback} [, {options}])
 		Create a timer and return the timer ID.