add some tests

test/_utils.coffee

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+../.coffee.mk/test/_utils.coffee

test/format.coffee

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+{
+  should
+} = require './_utils'
+format = require('../').format
+
+describe 'format', () ->
+
+
+  describe '.normalizeHeaders', () ->
+    it 'should lowercase headers', () ->
+      reqres = {headers: {'Accept': '', 'Content-TyPe': ''}}
+      format.normalizeHeaders(reqres).should.eql
+        'accept': ''
+        'content-type': ''
+
+
+  describe '.headers', () ->
+    it 'should camelize headers', () ->
+      reqres = {headers: {'accept': '', 'content-TyPe': ''}}
+      format.headers(reqres).should.eql
+        'Accept': ''
+        'Content-Type': ''
+
+    it 'should sort headers', () ->
+      reqres = {headers: {'Content-Type': '', 'Accept': ''}}
+      format.headers(reqres).should.eql
+        'Accept': ''
+        'Content-Type': ''
+
+
+  describe '.json', () ->
+    it 'should ignore non-JSON Content-Types', () ->
+      reqres = {headers: {'content-type':'application/xml'}, body:''}
+      format.json(reqres, null, null, []).should.eql ''
+
+    it 'should return no error on valid JSON', () ->
+      reqres = {headers:{'content-type':'application/json'}, body:'{}'}
+      format.json(reqres, null, null, []).should.eql '{}'

test/lint.coffee

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+{
+  should
+} = require './_utils'
+lint = require('../').lint
+
+describe 'lint', () ->
+  it 'should return one error of type invalid_blueprint', () ->
+    lint('')[0].type.should.eql 'invalid_blueprint'
+
+
+  describe 'json', () ->
+    it 'should return one error of type invalid_json', () ->
+      reqres = {headers:{'content-type':'application/json'}, body:''}
+      lint.json(reqres, null, null, [])[0].type.should.eql 'invalid_json'
+
+    it 'should ignore non-JSON Content-Types', () ->
+      reqres = {headers:{'content-type':'application/xml'}, body:''}
+      lint.json(reqres, null, null, []).should.eql []
+
+    it 'should return no error on valid JSON', () ->
+      reqres = {headers:{'content-type':'application/json'}, body:'{}'}
+      lint.json(reqres, null, null, []).should.eql []

test/mocha.opts

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+../.coffee.mk/test/mocha.opts