Initial version (extracted from nim-serialization)

tests/test_output_stream.nim

@@ -0,0 +1,21 @@
+import
+  unittest,
+  ../faststreams
+
+suite "output stream":
+  test "string output":
+    var s = init StringOutputStream
+    var altOutput = ""
+
+    for i in 0 .. 1000:
+      s.appendNumber i
+      s.append " bottles on the wall"
+      s.append byte('\n')
+
+      altOutput.add $i
+      altOutput.add " bottles on the wall"
+      altOutput.add '\n'
+
+    let streamOutput = s.getOutput
+    check streamOutput == altOutput
+