diff --git a/src/plugins/wp/tests/README.md b/src/plugins/wp/tests/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..c88b74cb66da4ec06b1b519cc8808a595c96eec8
--- /dev/null
+++ b/src/plugins/wp/tests/README.md
@@ -0,0 +1,42 @@
+# How to add a new test
+
+```
+cd src/plugins/wp
+git add tests/wp_gallery/find.i
+```
+
+## Update oracle for default configuration
+
+1. generate oracle files
+```
+ptests.opt tests/wp_gallery/find.i -show
+ptests.opt tests/wp_gallery/find.i -update
+```
+
+2. check again (for a final validation) before adding the oracle files
+```
+ptests.opt tests/wp_gallery/find.i
+git add tests/wp_gallery/oracle/find.*
+```
+
+## Update oracle for 'qualif' configuration (if there is such)
+
+1. generate oracle files and updated cache files
+```
+FRAMAC_WP_CACHE=update ptests.opt -config qualif tests/wp_gallery/find.i -show
+ptests.opt -config qualif tests/wp_gallery/find.i -update
+```
+
+Note: cleaning the cache is _not_ recommanded when updating or modifying an
+existing test; actually it might introduce git merge conflicts that are
+annoying to resolve. But the cleaning can be usefull when adding a new test.
+It can be done using the command (before those of the step 1):
+```
+rm -rf tests/wp_gallery/oracle_qualif/find.[0-9]*.session/cache/
+```
+
+2. check again (for a final validation) before adding the oracle and cache files
+```
+ptests.opt -config qualif tests/wp_gallery/find.i
+git add tests/wp_gallery/oracle_qualif/find.*
+```
diff --git a/src/plugins/wp/tests/wp_gallery/oracle_qualif/find.res.oracle b/src/plugins/wp/tests/wp_gallery/oracle_qualif/find.res.oracle
index 8f59a81a8f93dddf21a3b224837935fd374d8993..f0f68963ee4697b08904f242b4abb683cc7fcd38 100644
--- a/src/plugins/wp/tests/wp_gallery/oracle_qualif/find.res.oracle
+++ b/src/plugins/wp/tests/wp_gallery/oracle_qualif/find.res.oracle
@@ -48,14 +48,12 @@
 [wp] Proved goals:   41 / 41
   Qed:              15 
   Alt-Ergo 2.0.0:   26
-[wp] Report in:  'tests/wp_gallery/oracle_qualif/find.0.report.json'
-[wp] Report out: 'tests/wp_gallery/result_qualif/find.0.report.json'
--------------------------------------------------------------
-Functions           WP     Alt-Ergo        Total   Success
-find                 7      9 (56..80)      16       100%
-find_ptr             6     11 (192..240)    17       100%
-iter_ptr             2      6 (72..96)       8       100%
--------------------------------------------------------------
+------------------------------------------------------------
+ Functions                 WP     Alt-Ergo  Total   Success
+  find                      7        9       16       100%
+  find_ptr                  6       11       17       100%
+  iter_ptr                  2        6        8       100%
+------------------------------------------------------------
 [wp] Running WP plugin...
 [rte] annotating function find
 [rte] annotating function find_ptr
@@ -108,11 +106,9 @@ iter_ptr             2      6 (72..96)       8       100%
 [wp] Proved goals:   29 / 44
   Qed:               0 
   Alt-Ergo 2.0.0:   29
-[wp] Report in:  'tests/wp_gallery/oracle_qualif/find.0.report.json'
-[wp] Report out: 'tests/wp_gallery/result_qualif/find.0.report.json'
--------------------------------------------------------------
-Functions           WP     Alt-Ergo        Total   Success
-find                 7     11 (56..80)      18       100%
-find_ptr             6     12 (192..240)    18       100%
-iter_ptr             2      6 (72..96)       8       100%
--------------------------------------------------------------
+------------------------------------------------------------
+ Functions                 WP     Alt-Ergo  Total   Success
+  find                      7       11       18       100%
+  find_ptr                  6       12       18       100%
+  iter_ptr                  2        6        8       100%
+------------------------------------------------------------