initial import of basic tests for ROT() (issue 1909)

testsuite/LIST

@@ -166,6 +166,7 @@ test_qromo.pro
 test_readf_with_crlf.pro
 test_reads.pro
 test_rebin.pro
+test_rot.pro
 test_routine_dir.pro
 test_routine_filepath.pro
 test_routine_name.pro

testsuite/test_rot.pro

@@ -0,0 +1,80 @@
+;
+; Alain C., ADASS, 13 Nov 2024
+;
+; Assuming ROTATE() works fine !
+;
+; Bug 
+;
+; ------------------------------
+;
+pro TEST_ROT_ROTATE, angle, cumul_errors, offset=offset, help=help
+;
+if (N_PARAMS() LT 1) then begin
+   MESSAGE, /cont, 'Missing ANGLE as input'
+   return
+end
+errors=0
+;
+direction=-1
+if (angle EQ 0) then direction=0
+if (angle EQ 90) then  direction=3
+if (angle EQ 180) then  direction=2
+if (angle EQ 270) then  direction=1
+if (direction LT 0) then begin
+   MESSAGE, /cont, 'inadequate ANGLE, please check'
+   return
+endif
+;
+if ~KEYWORD_SET(offset) then offset=0
+;
+GIVE_LIST_NUMERIC, list_numeric_types, list_numeric_names
+;
+for jj=0, N_ELEMENTS(list_numeric_types)-1 do begin
+   for ii=3,7 do begin
+      input=INDGEN(ii,ii+offset, type=list_numeric_types[jj])   
+      res=ROT(input,angle)-ROTATE(input,direction)
+      if (TOTAL(ABS(res)) GT 1e-7) then begin
+         txt=' & type '+ list_numeric_names[jj]
+         ERRORS_ADD, errors, 'sym with size '+STRING(ii)+txt
+      endif
+   endfor
+endfor
+;
+; --------------
+;
+BANNER_FOR_TESTSUITE, "TEST_ROT_ROTATE", errors, /short, verb=verbose
+ERRORS_CUMUL, cumul_errors, errors
+if KEYWORD_SET(test) then STOP
+;
+end
+;
+; ------------------------------
+;
+pro test_rot
+;
+cumul_errors=0
+;
+angle=90.
+print, 'Testing for angle =', angle
+TEST_ROT_ROTATE, angle, cumul_errors
+;
+angle=180.
+print, 'Testing for angle =', angle
+TEST_ROT_ROTATE, angle, cumul_errors
+TEST_ROT_ROTATE, angle, cumul_errors, offset=1
+TEST_ROT_ROTATE, angle, cumul_errors, offset=2
+TEST_ROT_ROTATE, angle, cumul_errors, offset=3
+;
+angle=270.
+print, 'Testing for angle =', angle
+TEST_ROT_ROTATE, angle, cumul_errors
+;
+; ----------------- final message ----------
+;
+BANNER_FOR_TESTSUITE, 'TEST_ROT', cumul_errors
+;
+if (cumul_errors GT 0) AND ~KEYWORD_SET(no_exit) then EXIT, status=1
+;
+if KEYWORD_SET(test) then STOP
+;
+end