Workaround for indexing S3Path with "." relpath

Project.toml

@@ -1,7 +1,7 @@
 name = "Checkpoints"
 uuid = "b4a3413d-e481-5afc-88ff-bdfbd6a50dce"
 authors = "Invenia Technical Computing Corporation"
-version = "0.3.16"
+version = "0.3.17"
 
 [deps]
 AWSS3 = "1c724243-ef5b-51ab-93f4-b0a88ac62a95"

src/indexing.jl

@@ -25,12 +25,19 @@ struct IndexEntry
 end
 
 function IndexEntry(filepath::AbstractPath, base_dir)
-    segments = relpath(dirname(filepath), base_dir).segments
-
-    prefixes = filter(!contains("="), segments)
-    tags = map(filter(contains("="), segments)) do seg
-        tag, val = split(seg, "="; limit=2)
-        return Symbol(tag)=>val
+    if dirname(filepath) == base_dir
+        # workaround for relpath erroring on equal S3Paths
+        # https://github.com/rofinn/FilePathsBase.jl/issues/156
+        prefixes = ()
+        tags = ()
+    else
+        segments = relpath(dirname(filepath), base_dir).segments
+
+        prefixes = filter(!contains("="), segments)
+        tags = map(filter(contains("="), segments)) do seg
+            tag, val = split(seg, "="; limit=2)
+            return Symbol(tag)=>val
+        end
     end
     checkpoint_name = filename(filepath)
     return IndexEntry(filepath, checkpoint_name, prefixes, tags)
@@ -70,7 +77,7 @@ prefixes(x::IndexEntry) = getfield(x, :prefixes)
 """
     checkpoint_fullname(x::IndexEntry)
 
-The full name of the checkpoint output file, including [`prefixes`](@ref), and 
+The full name of the checkpoint output file, including [`prefixes`](@ref), and
 [`checkpoint_name`](@ref).
 If the checkpoint was saved using `checkpoint(Forecasters, "forecasts", ...)` then
 `checkpoint_fullname` will return `"Forecasters.forecasts"`.

test/indexing.jl

@@ -72,6 +72,18 @@
         end
     end
 
+    @testset "no module, no tags" begin
+        Checkpoints.register(["bar"])
+        mktempdir() do path
+            Checkpoints.config("bar", path)
+            checkpoint("bar", 1)
+            index = index_checkpoint_files(path)
+            entry = only(index)
+            @test isempty(tags(entry))
+            @test isempty(prefixes(entry))
+        end
+    end
+
     @testset "nonexistent dir" begin
         @test_throws ArgumentError index_checkpoint_files("nonexistent_dir")
     end