fix, simple tests

Author: MikeInnes

src/LNR.jl

@@ -34,7 +34,7 @@ scannedindex(r::LineNumberingReader, i) = i < r.lines[end]
 
 function Base.read(r::LineNumberingReader, ::Type{UInt8})
   c = read(r.io, UInt8)
-  c == '\n' && !scannedindex(r, position(r)) && !eof(r) &&
+  c == UInt8('\n') && !scannedindex(r, position(r)) && !eof(r) &&
      push!(r.lines, position(r)+1)
   return c
 end

test/runtests.jl

@@ -1,5 +1,23 @@
-using LNR
-using Test
+using LNR, Test
 
-# write your own tests here
-@test 1 == 1
+@testset "LNR" begin
+  io = IOBuffer("""
+    lorem ipsum
+    dolor sit amet
+    consectetur adipiscing elit
+    """) |> LineNumberingReader
+
+  @test cursor(io) == Cursor(1, 1)
+
+  @test readline(io) == "lorem ipsum"
+
+  @test cursor(io) == Cursor(2, 1)
+
+  seek(io, Cursor(1, 7))
+
+  @test read(io, Char) == 'i'
+
+  seek(io, Cursor(3, 13))
+
+  @test read(io, Char) == 'a'
+end