Drop to_a in expectations with Slice (#15735)

Author: straight-shoota

spec/std/io/memory_spec.cr

@@ -348,14 +348,14 @@ describe IO::Memory do
     io = IO::Memory.new
     io.pos = 1000
     io.print 'a'
-    io.to_slice.to_a.should eq([0] * 1000 + [97])
+    io.to_slice.should eq(Bytes.new(1001).tap { |bytes| bytes[-1] = 97 })
   end
 
   it "writes past end with write_byte" do
     io = IO::Memory.new
     io.pos = 1000
     io.write_byte 'a'.ord.to_u8
-    io.to_slice.to_a.should eq([0] * 1000 + [97])
+    io.to_slice.should eq(Bytes.new(1001).tap { |bytes| bytes[-1] = 97 })
   end
 
   it "reads at offset" do

spec/std/slice_spec.cr

@@ -529,7 +529,7 @@ describe "Slice" do
   it "does macro [] with numbers (#3055)" do
     slice = Bytes[1, 2, 3]
     slice.should be_a(Bytes)
-    slice.to_a.should eq([1, 2, 3])
+    slice.should eq(Bytes[1, 2, 3])
   end
 
   it "does Bytes[]" do
@@ -547,7 +547,7 @@ describe "Slice" do
   it "reverses" do
     slice = Bytes[1, 2, 3]
     slice.reverse!
-    slice.to_a.should eq([3, 2, 1])
+    slice.should eq(Bytes[3, 2, 1])
   end
 
   it "shuffles" do

spec/std/string_spec.cr

@@ -2870,7 +2870,7 @@ describe "String" do
     describe "encode" do
       it "encodes" do
         bytes = "Hello".encode("UCS-2LE")
-        bytes.to_a.should eq([72, 0, 101, 0, 108, 0, 108, 0, 111, 0])
+        bytes.should eq Bytes[72, 0, 101, 0, 108, 0, 108, 0, 111, 0]
       end
 
       {% unless flag?(:musl) || flag?(:solaris) || flag?(:freebsd) || flag?(:dragonfly) || flag?(:netbsd) %}
@@ -2908,7 +2908,7 @@ describe "String" do
       end
 
       it "doesn't raise on invalid byte sequence" do
-        "好\xff是".encode("EUC-JP", invalid: :skip).to_a.should eq([185, 165, 192, 167])
+        "好\xff是".encode("EUC-JP", invalid: :skip).should eq(Bytes[185, 165, 192, 167])
       end
 
       it "raises if incomplete byte sequence" do
@@ -2918,7 +2918,7 @@ describe "String" do
       end
 
       it "doesn't raise if incomplete byte sequence" do
-        ("好".byte_slice(0, 1) + "是").encode("EUC-JP", invalid: :skip).to_a.should eq([192, 167])
+        ("好".byte_slice(0, 1) + "是").encode("EUC-JP", invalid: :skip).should eq(Bytes[192, 167])
       end
 
       it "decodes" do