context: column is null when cast force the context creation, fix #260

Author: wdavidw

CHANGELOG.md

@@ -8,6 +8,10 @@
 * promise: new API module
 * errors: finish normalisation of all errors
 
+## Trunk
+
+* context: column is null when cast force the context creation, fix #260
+
 ## Version 4.6.4
 
 * errors: don't stringify/parse undefined and null values

lib/es5/index.js

@@ -1128,7 +1128,7 @@ function (_Transform) {
       var columns = this.options.columns;
       var isColumns = Array.isArray(columns);
       return {
-        column: isColumns === true ? columns.length >= this.state.record.length ? columns[this.state.record.length].name : null : this.state.record.length,
+        column: isColumns === true ? columns.length > this.state.record.length ? columns[this.state.record.length].name : null : this.state.record.length,
         empty_lines: this.info.empty_lines,
         header: columns === true,
         index: this.state.record.length,

lib/index.js

@@ -903,7 +903,7 @@ class Parser extends Transform {
     const isColumns = Array.isArray(columns)
     return {
       column: isColumns === true ?
-        ( columns.length >= this.state.record.length ?
+        ( columns.length > this.state.record.length ?
           columns[this.state.record.length].name :
           null
         ) :

test/api.assert_error.coffee

@@ -8,6 +8,7 @@ module.exports = assert_error = (err, assert = {}, exhaustive = false) ->
     return
   if exhaustive then for key, value of err
     assert.should.have.keys(key)
+  err.should.be.an.Error()
   for key, expect of assert
     value = err[key]
     if typeof expect is 'string'

test/option.columns.coffee

@@ -106,7 +106,7 @@ describe 'Option `columns`', ->
       4,5,6,x
       7,8,9,x
       """, columns: ["a", "b", "c", "d"], (err, data) ->
-        assert_error
+        assert_error err,
           message: 'Invalid Record Length: header length is 4, got 3 on line 1'
           code: 'CSV_INVALID_RECORD_LENGTH_DONT_MATCH_COLUMNS'
         next()
@@ -117,14 +117,26 @@ describe 'Option `columns`', ->
       4,5,6,x
       7,8,9
       """, columns: ["a", "b", "c", "d"], (err, data) ->
-        assert_error
+        assert_error err,
           message: 'Invalid Record Length: header length is 4, got 3 on line 3'
           code: 'CSV_INVALID_RECORD_LENGTH_DONT_MATCH_COLUMNS'
         next()
+    
+    it 'context column is null when cast force the context creation', (next) ->
+      # Trigger cast to force the creation of a context
+      parse "a\nb,\n",
+        columns: true
+        cast: (value) -> value
+      , (err, data) ->
+        assert_error err,
+          message: 'Invalid Record Length: header length is 1, got 2 on line 2'
+          code: 'CSV_INVALID_RECORD_LENGTH_DONT_MATCH_COLUMNS'
+          column: null
+        next()
 
-    it 'null context column when columns number inferieur to record length, fix regression #259', (next) ->
+    it 'context column is null when columns number inferieur to record length, fix regression #259', (next) ->
       parse "a\nb,\n", columns: true, (err, data) ->
-        assert_error
+        assert_error err,
           message: 'Invalid Record Length: header length is 1, got 2 on line 2'
           code: 'CSV_INVALID_RECORD_LENGTH_DONT_MATCH_COLUMNS'
           column: null

test/option.skip_lines_with_error.coffee

@@ -46,7 +46,6 @@ describe 'Option `skip_lines_with_error`', ->
         ["line","1"]
         ["line", "3"]
       ] unless err
-      console.log errors
       assert_error errors, [
         message: 'Invalid Opening Quote: a quote is found inside a field at line 2'
         code: 'INVALID_OPENING_QUOTE'