validate with other snappy impls

.gitignore

@@ -9,3 +9,4 @@
 *.exe
 *.js
 nimcache
+*.dll

tests/test.nim

@@ -28,9 +28,17 @@ block baddata:
       discard
 
 const files = [
-  "alice29.txt", "asyoulik.txt", "fireworks.jpg", "geo.protodata",
-  "html", "html_x_4", "kppkn.gtb", "lcet10.txt", "paper-100k.pdf",
-  "plrabn12.txt", "urls.10K"
+  "alice29.txt",
+  "asyoulik.txt",
+  "fireworks.jpg",
+  "geo.protodata",
+  "html",
+  "html_x_4",
+  "kppkn.gtb",
+  "lcet10.txt",
+  "paper-100k.pdf",
+  "plrabn12.txt",
+  "urls.10K"
 ]
 
 for file in files:

tests/validate.nim

@@ -0,0 +1,44 @@
+import strformat, supersnappy, snappy, nimsnappyc
+
+const files = [
+  "alice29.txt",
+  "asyoulik.txt",
+  "fireworks.jpg",
+  "geo.protodata",
+  "html",
+  "html_x_4",
+  "kppkn.gtb",
+  "lcet10.txt",
+  "paper-100k.pdf",
+  "plrabn12.txt",
+  "urls.10K"
+]
+
+# import nimsnappy # Requires libsnappy.dll
+# block dfdeshom_nimsnappy:
+#   echo "https://github.com/dfdeshom/nimsnappy"
+#   for file in files:
+#     let original = readFile(&"tests/data/{file}")
+#     doAssert nimsnappy.uncompress(supersnappy.compress(original)) == original
+#     doassert supersnappy.uncompress(nimsnappy.compress(original)) == original
+#   echo "pass!"
+
+block nimcompression_nimsnappyc:
+  echo "https://github.com/NimCompression/nimsnappyc"
+  for file in files:
+    let original = cast[seq[uint8]](readFile(&"tests/data/{file}"))
+    doAssert nimsnappyc.snappyUncompress(
+      supersnappy.compress(original)
+    ) == original
+    doassert supersnappy.uncompress(
+      nimsnappyc.snappyCompress(original)
+    ) == original
+  echo "pass!"
+
+block jangko_snappy:
+  echo "https://github.com/jangko/snappy"
+  for file in files:
+    let original = cast[seq[uint8]](readFile(&"tests/data/{file}"))
+    doAssert snappy.decode(supersnappy.compress(original)) == original
+    doassert supersnappy.uncompress(snappy.encode(original)) == original
+  echo "pass!"