refactor: 💡 Improve folder comparison in tests

✅ Closes: #139

test/runtests.jl

@@ -26,31 +26,44 @@ template_options = Dict(
   "UseCirrusCI" => true,
 )
 
-@testset "Compare folder generated by this call vs direct copier" begin
-  tmpdir1 = mktempdir()
-  tmpdir2 = mktempdir()
+function test_diff_dir(dir1, dir2)
+  ignore(line) = startswith("_commit")(line) || startswith("_src_path")(line)
+  @testset "$(basename(dir1)) vs $(basename(dir2))" begin
+    for (root, _, files) in walkdir(dir1)
+      nice_dir(file) =
+        replace(root, dir1 => "") |> out -> replace(out, r"^/" => "") |> out -> joinpath(out, file)
+      if nice_dir("") |> startswith(".git")
+        continue
+      end
+      @testset "File $(nice_dir(file))" for file in files
+        file1 = joinpath(root, file)
+        file2 = replace(file1, dir1 => dir2)
+        lines1 = readlines(file1)
+        lines2 = readlines(file2)
+        for (line1, line2) in zip(lines1, lines2)
+          ignore(line1) && continue
+          @test line1 == line2
+        end
+      end
+    end
+  end
+end
 
+bash_args = vcat([["-d"; "$k=$v"] for (k, v) in template_options]...)
+template_path = joinpath(@__DIR__, "..")
+
+@testset "Compare COPIERTemplate.generate vs copier CLI on HEAD" begin
   # This is a hack because Windows managed to dirty the repo.
   if get(ENV, "CI", "nothing") == "true" && Sys.iswindows()
     run(`git reset --hard HEAD`)
   end
 
-  COPIERTemplate.generate(tmpdir1; data = template_options, vcs_ref = "HEAD")
-  bash_args = vcat([["-d"; "$k=$v"] for (k, v) in template_options]...)
-  ignore(line) = startswith("_commit")(line) || startswith("_src_path")(line)
-  template_path = joinpath(@__DIR__, "..")
-  run(`copier copy --vcs-ref HEAD $bash_args $template_path $tmpdir2`)
-  for (root, dirs, files) in walkdir(tmpdir1)
-    for file in files
-      file1 = joinpath(root, file)
-      file2 = replace(file1, tmpdir1 => tmpdir2)
-      lines1 = readlines(file1)
-      lines2 = readlines(file2)
-      diff = [
-        "$line1 vs $line2" for
-        (line1, line2) in zip(lines1, lines2) if !ignore(line1) && line1 != line2
-      ]
-      @test diff == []
+  mktempdir(; prefix = "cli_") do dir_copier_cli
+    run(`copier copy --vcs-ref HEAD --quiet $bash_args $template_path $dir_copier_cli`)
+
+    mktempdir(; prefix = "copy_") do tmpdir
+      COPIERTemplate.generate(tmpdir; data = template_options, quiet = true, vcs_ref = "HEAD")
+      test_diff_dir(tmpdir, dir_copier_cli)
     end
   end
 end