Output of stryker on express-extractheaders

log.txt

[express-extractheaders]$ stryker run
19:20:23 (3766) INFO ConfigReader Using stryker.conf.js in the current working directory.
19:20:23 (3766) INFO MochaOptionsLoader Loading mochaOpts from "/home/andreas/work/express-extractheaders/test/mocha.opts"
19:20:23 (3766) INFO InputFileResolver Found 2 of 38 file(s) to be mutated.
19:20:23 (3766) INFO InitialTestExecutor Starting initial test run. This may take a while.
19:20:25 (3766) INFO InitialTestExecutor Initial test run succeeded. Ran 33 tests in 1 second (net 326 ms, overhead 490 ms).
19:20:25 (3766) INFO Stryker 232 Mutant(s) generated
19:20:25 (3766) INFO SandboxPool Creating 4 test runners (based on CPU count)
Mutation testing  [==================================================] 100% (ETC n/a) 232/232 tested (37 survived)

13. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/RangeOmittingStream.js:13:6
-         this.omitRanges[0][0] < chunk.length + this.responsePosition
+         this.omitRanges[0][0] <= chunk.length + this.responsePosition

18. [Survived] ConditionalExpression
/home/andreas/work/express-extractheaders/lib/RangeOmittingStream.js:13:6
-         this.omitRanges[0][0] < chunk.length + this.responsePosition
+         true

25. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/RangeOmittingStream.js:21:14
-             if (omitIndex > 0) {
+             if (true) {

26. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/RangeOmittingStream.js:21:14
-             if (omitIndex > 0) {
+             if (omitIndex >= 0) {

30. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/RangeOmittingStream.js:25:14
-             if (omitRange[1] <= chunk.length + this.responsePosition) {
+             if (omitRange[1] < chunk.length + this.responsePosition) {

38. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/RangeOmittingStream.js:29:27
-               omitRange[0] = this.responsePosition + chunk.length;
+               omitRange[0] = this.responsePosition - chunk.length;

66. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:23:10
-         if (isHead) {
+         if (true) {

68. [Survived] StringLiteral
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:26:21
-           req.method = 'GET';
+           req.method = "";

69. [Survived] StringLiteral
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:29:25
-         delete req.headers['if-range'];
+         delete req.headers[""];

73. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:31:12
-           if (err) {
+           if (false) {

75. [Survived] Block
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:31:17
-           if (err) {
-             res.unhijack();
-             return next(err);
-           } else if (
+           if (err) {} else if (

88. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:38:11
-             (previousResult.omitRanges.length === 0 ||
-               !/^W\//.test(previousResult.headers.etag))
+             (previousResult.omitRanges.length === 0 && !/^W\//.test(previousResult.headers.etag))

90. [Survived] ConditionalExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:38:11
-             (previousResult.omitRanges.length === 0 ||
-               !/^W\//.test(previousResult.headers.etag))
+             (true)

92. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:38:11
-             (previousResult.omitRanges.length === 0 ||
+             (previousResult.omitRanges.length !== 0 ||

93. [Survived] ConditionalExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:38:11
-             (previousResult.omitRanges.length === 0 ||
+             (false ||

94. [Survived] PrefixUnaryExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:39:12
-               !/^W\//.test(previousResult.headers.etag))
+               /^W\//.test(previousResult.headers.etag))

96. [Survived] ConditionalExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:38:11
-             (previousResult.omitRanges.length === 0 ||
+             (true ||

99. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:42:14
-             if (previousResult.omitRanges.length > 0) {
+             if (previousResult.omitRanges.length >= 0) {

100. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:42:14
-             if (previousResult.omitRanges.length > 0) {
+             if (true) {

102. [Survived] Block
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:42:52
-             if (previousResult.omitRanges.length > 0) {
-               return res
-                 .pipe(new RangeOmittingStream(previousResult.omitRanges))
-                 .pipe(res);
-             } else {
+             if (previousResult.omitRanges.length > 0) {} else {

105. [Survived] Block
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:46:17
-             } else {
-               return res.unhijack();
-             }
+             } else {}

114. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:61:18
-                 if (typeof contentLength !== 'undefined') {
+                 if (true) {

116. [Survived] StringLiteral
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:61:43
-                 if (typeof contentLength !== 'undefined') {
+                 if (typeof contentLength !== "") {

121. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:66:20
-                   if (contentLengthAdjustment) {
+                   if (true) {

128. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:78:18
-                 if (omitRanges.length > 0) {
+                 if (true) {

129. [Survived] BinaryExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:78:18
-                 if (omitRanges.length > 0) {
+                 if (omitRanges.length >= 0) {

141. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:94:18
-                 if (stillParsing) {
+                 if (true) {

154. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:97:22
-                     if (typeof httpEquiv === 'string') {
+                     if (true) {

168. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:118:27
-                   } else if (name === 'link') {
+                   } else if (true) {

179. [Survived] ConditionalExpression
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:125:20
-                       typeof href === 'string' &&
+                       true &&

208. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:144:31
-                       } else if (headers.link) {
+                       } else if (true) {

209. [Survived] Block
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:153:39
-               onclosetag: function(name) {
-                 if (name === 'head') {
-                   stopParsingAndSendResponse();
-                 }
-               }
+               onclosetag: function(name) {}

212. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:154:18
-                 if (name === 'head') {
+                 if (false) {

213. [Survived] StringLiteral
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:154:27
-                 if (name === 'head') {
+                 if (name === "") {

215. [Survived] Block
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:154:35
-                 if (name === 'head') {
-                   stopParsingAndSendResponse();
-                 }
+                 if (name === 'head') {}

223. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:163:20
-                   if (!isHead) {
+                   if (true) {

226. [Survived] IfStatement
/home/andreas/work/express-extractheaders/lib/expressExtractHeaders.js:167:25
-                 } else if (!isHead) {
+                 } else if (true) {

Ran 9.17 tests per mutant on average.
--------------------------|---------|----------|-----------|------------|----------|---------|
File                      | % score | # killed | # timeout | # survived | # no cov | # error |
--------------------------|---------|----------|-----------|------------|----------|---------|
All files                 |   83.70 |      185 |         5 |         37 |        0 |       5 |
 expressExtractHeaders.js |   83.42 |      156 |         0 |         31 |        0 |       3 |
 RangeOmittingStream.js   |   85.00 |       29 |         5 |          6 |        0 |       2 |
--------------------------|---------|----------|-----------|------------|----------|---------|
19:20:51 (3766) INFO Stryker Done in 27 seconds.