diff --git a/plug-ins/script-fu/test/frameworks/testing.scm b/plug-ins/script-fu/test/frameworks/testing.scm
index 91432c5627..1050e1f63d 100644
--- a/plug-ins/script-fu/test/frameworks/testing.scm
+++ b/plug-ins/script-fu/test/frameworks/testing.scm
@@ -112,7 +112,9 @@
 ; except by proximity in the output.
 (define (test! string)
   (displayln "")
-  (displayln string))
+  (displayln string)
+  ; also to GIMP Error Console
+  (gimp-message string))
 
 
 ; reset testing state when test framework is loaded
diff --git a/plug-ins/script-fu/test/tests/PDB/image/image-new.scm b/plug-ins/script-fu/test/tests/PDB/image/image-new.scm
index bf2fe48aea..195ee4ee45 100644
--- a/plug-ins/script-fu/test/tests/PDB/image/image-new.scm
+++ b/plug-ins/script-fu/test/tests/PDB/image/image-new.scm
@@ -159,7 +159,8 @@
 ; Dimension zero yields error
 ; It does NOT yield invalid ID -1
 (assert-error `(gimp-image-new 0 0 RGB)
-              "argument 1 in call to gimp-image-new has value 0 out of range: 1 to 524288")
+              "Invalid value for argument 0")
+; FORMERLY    "argument 1 in call to gimp-image-new has value 0 out of range: 1 to 524288")
 
 ; Since 3.0, parameter validation catches this earlier.
 ; Formerly,  "Procedure execution of gimp-image-new failed on invalid input arguments: "
diff --git a/plug-ins/script-fu/test/tests/PDB/image/image-precision.scm b/plug-ins/script-fu/test/tests/PDB/image/image-precision.scm
index 5e355a96f9..2ed841993c 100644
--- a/plug-ins/script-fu/test/tests/PDB/image/image-precision.scm
+++ b/plug-ins/script-fu/test/tests/PDB/image/image-precision.scm
@@ -45,14 +45,23 @@
 
 ;       New with precision
 
+
+; GAMMA obsolete since 3.0
+; PRECISION-U8-GAMMA
+; PRECISION-U16-GAMMA
+; PRECISION-U32-GAMMA
+; PRECISION-HALF-GAMMA
+; PRECISION-FLOAT-GAMMA
+; PRECISION-DOUBLE-GAMMA
+
 ;         setup
-(define testImageWithPrecision (car (gimp-image-new-with-precision 21 22 RGB PRECISION-DOUBLE-GAMMA)))
+(define testImageWithPrecision (car (gimp-image-new-with-precision 21 22 RGB PRECISION-U8-PERCEPTUAL)))
 
 
 ; image has given precision
 (assert `(=
            (car (gimp-image-get-precision ,testImageWithPrecision))
-           PRECISION-DOUBLE-GAMMA ))
+           PRECISION-U8-PERCEPTUAL ))
 
 
 
@@ -63,9 +72,8 @@
                 ,testImage
                 ,precision))))
 
-; First convert away from first precision in list:
+; Assert precision is not first precision in list:
 ; it will fail if image already that precision
-(gimp-image-convert-precision testImage PRECISION-U8-NON-LINEAR)
 
 (define allPrecisions
   `(PRECISION-U8-LINEAR
@@ -85,13 +93,7 @@
     PRECISION-FLOAT-PERCEPTUAL
     PRECISION-DOUBLE-LINEAR
     PRECISION-DOUBLE-NON-LINEAR
-    PRECISION-DOUBLE-PERCEPTUAL
-    PRECISION-U8-GAMMA
-    PRECISION-U16-GAMMA
-    PRECISION-U32-GAMMA
-    PRECISION-HALF-GAMMA
-    PRECISION-FLOAT-GAMMA
-    PRECISION-DOUBLE-GAMMA))
+    PRECISION-DOUBLE-PERCEPTUAL))
 
 ; sequence through all precisions, converting testImage to them
 (for-each
diff --git a/plug-ins/script-fu/test/tests/PDB/paint/dynamics.scm b/plug-ins/script-fu/test/tests/PDB/paint/dynamics.scm
index 1ced87f558..e403005e96 100644
--- a/plug-ins/script-fu/test/tests/PDB/paint/dynamics.scm
+++ b/plug-ins/script-fu/test/tests/PDB/paint/dynamics.scm
@@ -23,7 +23,7 @@
             FALSE) ; not closed
 
 ; make test harder by using float precision
-(gimp-image-convert-precision testImage PRECISION-DOUBLE-GAMMA)
+(gimp-image-convert-precision testImage PRECISION-DOUBLE-NON-LINEAR)
 ; ensure testing is stroking with paint (versus line)
 (gimp-context-set-stroke-method STROKE-PAINT-METHOD)
 ; ensure testing is painting with paintbrush (versus pencil, airbrush, etc.)
@@ -38,7 +38,8 @@
 
 ; introspection: gimp module returns list of names of dynamics
 ; second arg is a regex
-(assert `(list? (gimp-dynamics-get-list "")))
+; FORMERLY get-list
+(assert `(list? (gimp-dynamics-get-name-list "")))
 
 ; refresh: gimp module will load newly installed dynamics
 ; method is void and should never fail.
@@ -67,9 +68,10 @@
 
 
 ; the dynamics setting can be set to the name of a dynamics
-(assert `(gimp-context-set-dynamics "Tilt Angle"))
-; setting to false was effective
-(assert `(string=? (car (gimp-context-get-dynamics))
+(assert `(gimp-context-set-dynamics-name "Tilt Angle"))
+; setting was effective
+; formerly context-[set,get]-dynamics
+(assert `(string=? (car (gimp-context-get-dynamics-name))
                    "Tilt Angle"))
 
 
@@ -81,11 +83,11 @@
 ;    stroke a drawable along a path with current brush and dynamics
 
 
-(define dynamicsList (car (gimp-dynamics-get-list "")))
+(define dynamicsList (car (gimp-dynamics-get-name-list "")))
 
 (define (testDynamics dynamics)
     ; Test that every dynamics can be set on the context
-    (gimp-context-set-dynamics dynamics)
+    (gimp-context-set-dynamics-name dynamics)
 
     (display dynamics)
     ; paint with paintbrush and dynamics, under the test harness