update Slice(UInt8) to Bytes

spec/custom_drivers_types_spec.cr

@@ -231,14 +231,14 @@ describe DB do
       db.query "query" { }
       db.query "query", 1 { }
       db.query "query", 1, "string" { }
-      db.query("query", Slice(UInt8).new(4)) { }
+      db.query("query", Bytes.new(4)) { }
       db.query("query", 1, "string", FooValue.new(5)) { }
       db.query "query", [1, "string", FooValue.new(5)] { }
 
       db.query("query").close
       db.query("query", 1).close
       db.query("query", 1, "string").close
-      db.query("query", Slice(UInt8).new(4)).close
+      db.query("query", Bytes.new(4)).close
       db.query("query", 1, "string", FooValue.new(5)).close
       db.query("query", [1, "string", FooValue.new(5)]).close
     end
@@ -248,14 +248,14 @@ describe DB do
       db.query "query" { }
       db.query "query", 1 { }
       db.query "query", 1, "string" { }
-      db.query("query", Slice(UInt8).new(4)) { }
+      db.query("query", Bytes.new(4)) { }
       db.query("query", 1, "string", BarValue.new(5)) { }
       db.query "query", [1, "string", BarValue.new(5)] { }
 
       db.query("query").close
       db.query("query", 1).close
       db.query("query", 1, "string").close
-      db.query("query", Slice(UInt8).new(4)).close
+      db.query("query", Bytes.new(4)).close
       db.query("query", 1, "string", BarValue.new(5)).close
       db.query("query", [1, "string", BarValue.new(5)]).close
     end
@@ -267,7 +267,7 @@ describe DB do
       db.exec("query")
       db.exec("query", 1)
       db.exec("query", 1, "string")
-      db.exec("query", Slice(UInt8).new(4))
+      db.exec("query", Bytes.new(4))
       db.exec("query", 1, "string", FooValue.new(5))
       db.exec("query", [1, "string", FooValue.new(5)])
     end
@@ -277,7 +277,7 @@ describe DB do
       db.exec("query")
       db.exec("query", 1)
       db.exec("query", 1, "string")
-      db.exec("query", Slice(UInt8).new(4))
+      db.exec("query", Bytes.new(4))
       db.exec("query", 1, "string", BarValue.new(5))
       db.exec("query", [1, "string", BarValue.new(5)])
     end

spec/dummy_driver.cr

@@ -78,7 +78,7 @@ class DummyDriver < DB::Driver
     @values : Array(String)?
 
     @@last_result_set : self?
-    @@next_column_type : Nil.class | String.class | Int32.class | Int64.class | Float32.class | Float64.class | Slice(UInt8).class
+    @@next_column_type : Nil.class | String.class | Int32.class | Int64.class | Float32.class | Float64.class | Bytes.class
 
     def initialize(statement, query)
       super(statement)
@@ -152,17 +152,17 @@ class DummyDriver < DB::Driver
       read?(String).try &.to_f64
     end
 
-    def read?(t : Slice(UInt8).class)
+    def read?(t : Bytes.class)
       value = read?
       if value.is_a?(Nil)
         value
       elsif value.is_a?(String)
         ary = value.bytes
         Slice.new(ary.to_unsafe, ary.size)
-      elsif value.is_a?(Slice(UInt8))
+      elsif value.is_a?(Bytes)
         value
       else
-        raise "#{value} is not convertible to Slice(UInt8)"
+        raise "#{value} is not convertible to Bytes"
       end
     end
   end

spec/dummy_driver_spec.cr

@@ -101,9 +101,9 @@ describe DummyDriver do
         db.query("az,AZ") do |rs|
           rs.move_next
           ary = [97u8, 122u8]
-          rs.read(Slice(UInt8)).should eq(Slice.new(ary.to_unsafe, ary.size))
+          rs.read(Bytes).should eq(Bytes.new(ary.to_unsafe, ary.size))
           ary = [65u8, 90u8]
-          rs.read(Slice(UInt8)).should eq(Slice.new(ary.to_unsafe, ary.size))
+          rs.read(Bytes).should eq(Bytes.new(ary.to_unsafe, ary.size))
         end
       end
     end
@@ -134,9 +134,9 @@ describe DummyDriver do
     it "executes and selects blob" do
       with_dummy do |db|
         ary = UInt8[0x53, 0x51, 0x4C]
-        slice = Slice.new(ary.to_unsafe, ary.size)
+        slice = Bytes.new(ary.to_unsafe, ary.size)
         DummyDriver::DummyResultSet.next_column_type = typeof(slice)
-        (db.scalar("?", slice) as Slice(UInt8)).to_a.should eq(ary)
+        (db.scalar("?", slice).as(Bytes)).to_a.should eq(ary)
       end
     end
   end

src/db.cr

@@ -70,7 +70,7 @@ module DB
   # Types supported to interface with database driver.
   # These can be used in any `ResultSet#read` or any `Database#query` related
   # method to be used as query parameters
-  TYPES = [Nil, String, Int32, Int64, Float32, Float64, Slice(UInt8)]
+  TYPES = [Nil, String, Int32, Int64, Float32, Float64, Bytes]
 
   # See `DB::TYPES` in `DB`. `Any` is a union of all types in `DB::TYPES`
   {% begin %}

src/db/statement.cr

@@ -57,8 +57,8 @@ module DB
             return rs.read?(Float32)
           when Float64.class
             return rs.read?(Float64)
-          when Slice(UInt8).class
-            return rs.read?(Slice(UInt8))
+          when Bytes.class
+            return rs.read?(Bytes)
           when Nil.class
             return rs.read?(Int32)
           else