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herrors: Improve handling of JSON errors

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`*json.UnmarshalTypeError` and `*json.SyntaxError` has a byte `Offset`, so use that.

This commit also reworks/simplifies the errror line matching logic. This also makes the file reading unbuffered, but that should be fine in this error case.

See #5324
This commit is contained in:
Bjørn Erik Pedersen
2018-10-23 08:54:10 +02:00
parent ed7b3e2619
commit f669ef6bec
10 changed files with 228 additions and 119 deletions
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54
common/herrors/error_locator_test.go
View File

@@ -24,8 +24,8 @@ import (
func TestErrorLocator(t *testing.T) {
assert := require.New(t)
lineMatcher := func(le FileError, lineno int, line string) bool {
return strings.Contains(line, "THEONE")
lineMatcher := func(m LineMatcher) bool {
return strings.Contains(m.Line, "THEONE")
}
lines := `LINE 1
@@ -38,49 +38,51 @@ LINE 7
LINE 8
`
location := locateErrorInString(nil, lines, lineMatcher)
location := locateErrorInString(lines, lineMatcher)
assert.Equal([]string{"LINE 3", "LINE 4", "This is THEONE", "LINE 6", "LINE 7"}, location.Lines)
assert.Equal(5, location.LineNumber)
assert.Equal(2, location.Pos)
assert.Equal([]string{"This is THEONE"}, locateErrorInString(nil, `This is THEONE`, lineMatcher).Lines)
assert.Equal([]string{"This is THEONE"}, locateErrorInString(`This is THEONE`, lineMatcher).Lines)
location = locateErrorInString(nil, `L1
location = locateErrorInString(`L1
This is THEONE
L2
`, lineMatcher)
assert.Equal(2, location.LineNumber)
assert.Equal(1, location.Pos)
assert.Equal([]string{"L1", "This is THEONE", "L2"}, location.Lines)
assert.Equal([]string{"L1", "This is THEONE", "L2", ""}, location.Lines)
location = locateErrorInString(nil, `This is THEONE
location = locateErrorInString(`This is THEONE
L2
`, lineMatcher)
assert.Equal(0, location.Pos)
assert.Equal([]string{"This is THEONE", "L2"}, location.Lines)
assert.Equal([]string{"This is THEONE", "L2", ""}, location.Lines)
location = locateErrorInString(nil, `L1
location = locateErrorInString(`L1
This THEONE
`, lineMatcher)
assert.Equal([]string{"L1", "This THEONE"}, location.Lines)
assert.Equal([]string{"L1", "This THEONE", ""}, location.Lines)
assert.Equal(1, location.Pos)
location = locateErrorInString(nil, `L1
location = locateErrorInString(`L1
L2
This THEONE
`, lineMatcher)
assert.Equal([]string{"L1", "L2", "This THEONE"}, location.Lines)
assert.Equal([]string{"L1", "L2", "This THEONE", ""}, location.Lines)
assert.Equal(2, location.Pos)
location = locateErrorInString(nil, "NO MATCH", lineMatcher)
location = locateErrorInString("NO MATCH", lineMatcher)
assert.Equal(-1, location.LineNumber)
assert.Equal(-1, location.Pos)
assert.Equal(0, len(location.Lines))
lineMatcher = func(le FileError, lineno int, line string) bool {
return lineno == 6
lineMatcher = func(m LineMatcher) bool {
return m.LineNumber == 6
}
location = locateErrorInString(nil, `A
location = locateErrorInString(`A
B
C
D
@@ -96,11 +98,11 @@ J`, lineMatcher)
assert.Equal(2, location.Pos)
// Test match EOF
lineMatcher = func(le FileError, lineno int, line string) bool {
return lineno == 4
lineMatcher = func(m LineMatcher) bool {
return m.LineNumber == 4
}
location = locateErrorInString(nil, `A
location = locateErrorInString(`A
B
C
`, lineMatcher)
@@ -109,4 +111,18 @@ C
assert.Equal(4, location.LineNumber)
assert.Equal(2, location.Pos)
offsetMatcher := func(m LineMatcher) bool {
return m.Offset == 1
}
location = locateErrorInString(`A
B
C
D
E`, offsetMatcher)
assert.Equal([]string{"A", "B", "C", "D"}, location.Lines)
assert.Equal(2, location.LineNumber)
assert.Equal(1, location.Pos)
}