fix tests

Author: johnnychen94

src/generate.jl

@@ -145,7 +145,8 @@ function makedemos(source::String, templates::Union{Dict, Nothing} = nothing;
     if isnothing(templates)
         out_path = walkpage(page; flatten=false) do dir, item
             joinpath(
-                relpath(dir, root),
+                basename(source),
+                relpath(dir, page_root),
                 splitext(basename(item))[1] * ".md"
             )
         end

src/preview.jl

@@ -260,6 +260,8 @@ function rewrite_localremote_path(page_dir, build_dir)
             config = JSON.parsefile(src_config_path)
             config["remote"][card.name] = card.path
 
+            # Ref: https://discourse.julialang.org/t/find-what-has-locked-held-a-file/23278/2
+            Base.Sys.iswindows() && GC.gc()
             open(src_config_path, "w") do io
                 JSON.print(io, config)
             end

src/types/card.jl

@@ -1,5 +1,12 @@
 abstract type AbstractDemoCard end
 
+"""
+    UnmatchedCard(path)
+
+A dummy placeholder card for files that DemoCards doesn't support
+yet. No operation will be applied on this type of file, except for
+warnings.
+"""
 struct UnmatchedCard <: AbstractDemoCard
     path::String
 end