Add fuzzing to the transform package

.travis.yml

@@ -1,12 +1,33 @@
+dist: bionic
 language: go
 go:
-  - 1.7
-  - 1.8
+  - "1.11"
+
+services:
+  - docker
+
 before_install:
   - go get github.com/mattn/goveralls
+
 install:
   - make setup
   - make build
+
 script:
   - make test
-  - bash scripts/cover.sh
+  # Coveralls is down for maintenance currently
+  # - bash scripts/cover.sh
+
+jobs:
+  include:
+    - stage: Build, Unit-Tests & Fuzz-Tests
+      if: branch = master AND type IN (pull_request)
+      go: 1.12.x
+      script:
+        - bash scripts/fuzzit.sh regression
+
+    - stage: Fuzzit (Fuzzing)
+      if: branch = master AND type IN (push)
+      go: 1.12.x
+      script:
+        - bash scripts/fuzzit.sh fuzzing

README.md

@@ -1,4 +1,4 @@
-# prose [![Build Status](https://travis-ci.org/jdkato/prose.svg?branch=master)](https://travis-ci.org/jdkato/prose) [![Build status](https://ci.appveyor.com/api/projects/status/24bepq85nnnk4scr/branch/v2?svg=true)](https://ci.appveyor.com/project/jdkato/prose/branch/v2) [![GoDoc](https://godoc.org/github.com/golang/gddo?status.svg)](https://godoc.org/gopkg.in/jdkato/prose.v2) [![Coverage Status](https://coveralls.io/repos/github/jdkato/prose/badge.svg?branch=v2)](https://coveralls.io/github/jdkato/prose?branch=v2) [![Go Report Card](https://goreportcard.com/badge/github.com/jdkato/prose)](https://goreportcard.com/report/github.com/jdkato/prose) [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/avelino/awesome-go#natural-language-processing)
+# prose [![Build Status](https://travis-ci.org/jdkato/prose.svg?branch=master)](https://travis-ci.org/jdkato/prose) [![fuzzit](https://app.fuzzit.dev/badge?org_id=prose=master)](https://fuzzit.dev) [![GoDoc](https://godoc.org/github.com/golang/gddo?status.svg)](https://godoc.org/gopkg.in/jdkato/prose.v2) [![Coverage Status](https://coveralls.io/repos/github/jdkato/prose/badge.svg?branch=v2)](https://coveralls.io/github/jdkato/prose?branch=v2) [![Go Report Card](https://goreportcard.com/badge/github.com/jdkato/prose)](https://goreportcard.com/report/github.com/jdkato/prose) [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/avelino/awesome-go#natural-language-processing)
 
 
 `prose` is a natural language processing library (English only) in *pure Go*. It supports tokenization, segmentation, part-of-speech tagging, and named-entity extraction.

scripts/fuzzit.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+#
+# Helper script for working with fuzzit.dev:
+#
+# https://github.com/fuzzitdev/example-go
+#
+# Based on:
+#
+# https://github.com/google/syzkaller/blob/master/fuzzit.sh
+set -eux
+
+function target {
+	go-fuzz-build -libfuzzer -func $3 -o fuzzer.a $2
+	clang -fsanitize=fuzzer fuzzer.a -o fuzzer
+
+    ./fuzzit create target $1 || true
+	./fuzzit create job $LOCAL --type fuzzing --branch $TRAVIS_BRANCH --revision $TRAVIS_COMMIT prose/$1 ./fuzzer
+}
+
+go get -u github.com/dvyukov/go-fuzz/go-fuzz-build
+wget -q -O fuzzit https://github.com/fuzzitdev/fuzzit/releases/download/v2.4.12/fuzzit_Linux_x86_64
+chmod a+x fuzzit
+if [ "$1" = "fuzzing" ]; then
+    ./fuzzit auth $FUZZIT_API_KEY
+    export LOCAL=""
+else
+    export LOCAL="--local"
+fi
+
+target prose-transform ./transform Fuzz

transform/transform.go

@@ -78,5 +78,9 @@ func Camel(s string) string {
 			break
 		}
 	}
-	return strings.TrimSpace(string(unicode.ToLower(first)) + Pascal(s)[1:])
+	body := Pascal(s)
+	if len(body) > 1 {
+		return strings.TrimSpace(string(unicode.ToLower(first)) + body[1:])
+	}
+	return s
 }

transform/transform_fuzz.go

@@ -0,0 +1,22 @@
+// +build gofuzz
+
+package transform
+
+func Fuzz(data []byte) int {
+	s := string(data)
+
+	// Case transformations
+	Simple(s)
+	Snake(s)
+	Dash(s)
+	Dot(s)
+	Constant(s)
+	Pascal(s)
+	Camel(s)
+
+	// Title converters
+	tc := NewTitleConverter(APStyle)
+	tc.Title(s)
+
+	return 0
+}