@@ -2263,16 +2263,20 @@ end
22632263 @test findprev (! iszero, x,i) == findprev (! iszero, x_sp,i)
22642264 end
22652265
2266- y = [0 0 0 0 0 ;
2266+ y = [7 0 0 0 0 ;
22672267 1 0 1 0 0 ;
2268- 1 0 0 0 1 ;
2268+ 1 7 0 7 1 ;
22692269 0 0 1 0 0 ;
2270- 1 0 1 1 0 ]
2271- y_sp = sparse (y)
2270+ 1 0 1 1 0.0 ]
2271+ y_sp = [x == 7 ? - 0.0 : x for x in sparse (y)]
2272+ y = Array (y_sp)
2273+ @test isequal (y_sp[1 ,1 ], - 0.0 )
22722274
22732275 for i in keys (y)
22742276 @test findnext (! iszero, y,i) == findnext (! iszero, y_sp,i)
22752277 @test findprev (! iszero, y,i) == findprev (! iszero, y_sp,i)
2278+ @test findnext (iszero, y,i) == findnext (iszero, y_sp,i)
2279+ @test findprev (iszero, y,i) == findprev (iszero, y_sp,i)
22762280 end
22772281
22782282 z_sp = sparsevec (Dict (1 => 1 , 5 => 1 , 8 => 0 , 10 => 1 ))
@@ -2282,6 +2286,17 @@ end
22822286 @test findnext (! iszero, z,i) == findnext (! iszero, z_sp,i)
22832287 @test findprev (! iszero, z,i) == findprev (! iszero, z_sp,i)
22842288 end
2289+
2290+ w = [ " a" " " ; " " " b" ]
2291+ w_sp = sparse (w)
2292+
2293+ for i in keys (w)
2294+ @test findnext (! isequal (" " ), w,i) == findnext (! isequal (" " ), w_sp,i)
2295+ @test findprev (! isequal (" " ), w,i) == findprev (! isequal (" " ), w_sp,i)
2296+ @test findnext (isequal (" " ), w,i) == findnext (isequal (" " ), w_sp,i)
2297+ @test findprev (isequal (" " ), w,i) == findprev (isequal (" " ), w_sp,i)
2298+ end
2299+
22852300end
22862301
22872302# #20711
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