+ fillchar test

tests/test/tfillchr.pp

@@ -0,0 +1,65 @@
+const
+  err: boolean = false;
+
+var
+  a: array[0..512] of byte;
+      
+procedure test_fillchar;
+var
+  i, j: longint;   
+  k: byte;
+  l: longint;
+begin
+  for i := 0 to 512 do
+    begin
+      a[i] := 255;
+    end;
+  { lengths }
+  for i := 0 to 256 do
+    { alignments }
+    for j := 0 to 31 do
+      { values }
+      for k := 0 to 1 do
+        begin
+          fillchar(a[j+4],i,k);
+          { check whether we didn't write a byte too early }
+          for l := 0 to j+3 do
+            begin
+              if a[l] <> 255 then
+                begin
+                  writeln('Fillchar test error 1');
+                  err := true;
+                  halt(1);
+                end;
+              a[l] := 255;
+            end;
+          { check whether the actual values were written correctly }
+          for l := j+4 to j+i+3 do
+            begin
+              if a[l] <> k then
+                begin
+                  writeln('Fillchar test error 2');
+                  err := true;
+                  halt(1);
+                end;
+              a[l] := 255;
+            end;
+          { check whether we didn't write past the end }
+          for l := j+i+4 to 512 do
+            begin
+              if a[l] <> 255 then
+                begin
+                  writeln('Fillchar test error 3');
+                  err := true;
+                  halt(1);
+                end;
+              a[l] := 255;
+            end;
+        end;
+end;
+
+begin
+  test_fillchar;
+  if err then
+    halt(1);
+end.