new tester; all tests categorized

tests/stdlib/tstrutil.nim

@@ -0,0 +1,45 @@
+discard """
+  file: "tstrutil.nim"
+  output: "ha/home/a1xyz/usr/bin"
+"""
+# test the new strutils module
+
+import
+  strutils
+
+proc testStrip() =
+  write(stdout, strip("  ha  "))
+
+proc main() = 
+  testStrip()
+  for p in split("/home/a1:xyz:/usr/bin", {':'}):
+    write(stdout, p)
+
+proc testDelete = 
+  var s = "0123456789ABCDEFGH"
+  delete(s, 4, 5)
+  assert s == "01236789ABCDEFGH"
+  delete(s, s.len-1, s.len-1)
+  assert s == "01236789ABCDEFG"
+  delete(s, 0, 0)
+  assert s == "1236789ABCDEFG"
+
+testDelete()  
+    
+assert(insertSep($1000_000) == "1_000_000")
+assert(insertSep($232) == "232")
+assert(insertSep($12345, ',') == "12,345")
+assert(insertSep($0) == "0")
+
+assert(editDistance("prefix__hallo_suffix", "prefix__hallo_suffix") == 0)
+assert(editDistance("prefix__hallo_suffix", "prefix__hallo_suffi1") == 1)
+assert(editDistance("prefix__hallo_suffix", "prefix__HALLO_suffix") == 5)
+assert(editDistance("prefix__hallo_suffix", "prefix__ha_suffix") == 3)
+assert(editDistance("prefix__hallo_suffix", "prefix") == 14)
+assert(editDistance("prefix__hallo_suffix", "suffix") == 14)
+assert(editDistance("prefix__hallo_suffix", "prefix__hao_suffix") == 2)
+
+main()
+#OUT ha/home/a1xyz/usr/bin
+
+