# When there is no rationale, 'go get' should print a hard-coded message.
go get example.com/retract/rationale@v1.0.0-empty
stderr '^go: warning: example.com/retract/rationale@v1.0.0-empty: retracted by module author$'

# 'go list' should print the same hard-coded message.
go list -m -retracted -f '{{.Retracted}}' example.com/retract/rationale
stdout '^\[retracted by module author\]$'


# When there is a multi-line message, 'go get' should print the first line.
go get example.com/retract/rationale@v1.0.0-multiline1
stderr '^go: warning: example.com/retract/rationale@v1.0.0-multiline1: retracted by module author: short description$'
! stderr 'detail'

# 'go list' should show the full message.
go list -m -retracted -f '{{.Retracted}}' example.com/retract/rationale
cmp stdout multiline

# 'go get' output should be the same whether the retraction appears at top-level
# or in a block.
go get example.com/retract/rationale@v1.0.0-multiline2
stderr '^go: warning: example.com/retract/rationale@v1.0.0-multiline2: retracted by module author: short description$'
! stderr 'detail'

# Same for 'go list'.
go list -m -retracted -f '{{.Retracted}}' example.com/retract/rationale
cmp stdout multiline


# 'go get' should omit long messages.
go get example.com/retract/rationale@v1.0.0-long
stderr '^go: warning: example.com/retract/rationale@v1.0.0-long: retracted by module author: \(message omitted: too long\)'

# 'go list' should show the full message.
go list -m -retracted -f '{{.Retracted}}' example.com/retract/rationale
stdout '^\[lo{500}ng\]$'


# 'go get' should omit messages with unprintable characters.
go get example.com/retract/rationale@v1.0.0-unprintable
stderr '^go: warning: example.com/retract/rationale@v1.0.0-unprintable: retracted by module author: \(message omitted: contains non-printable characters\)'

# 'go list' should show the full message.
go list -m -retracted -f '{{.Retracted}}' example.com/retract/rationale
stdout '^\[Ends with a BEL character. Beep!\x07\]$'


# When there is a comment on a block, but not on individual retractions within
# the block, the rationale should come from the block comment.
go list -m -retracted -f '{{.Retracted}}' example.com/retract/rationale@v1.0.0-block
stdout '^\[block comment\]$'
go list -m -retracted -f '{{.Retracted}}' example.com/retract/rationale@v1.0.0-blockwithcomment
stdout '^\[inner comment\]$'


# When a version is covered by multiple retractions, all retractions should
# be reported in the order they appear in the file.
go list -m -retracted -f '{{range .Retracted}}{{.}},{{end}}' example.com/retract/rationale@v1.0.0-order
stdout '^degenerate range,single version,$'
go list -m -retracted -f '{{range .Retracted}}{{.}},{{end}}' example.com/retract/rationale@v1.0.1-order
stdout '^single version,degenerate range,$'

# 'go get' will only report the first retraction to avoid being too verbose.
go get example.com/retract/rationale@v1.0.0-order
stderr '^go: warning: example.com/retract/rationale@v1.0.0-order: retracted by module author: degenerate range$'
go get example.com/retract/rationale@v1.0.1-order
stderr '^go: warning: example.com/retract/rationale@v1.0.1-order: retracted by module author: single version$'

-- go.mod --
module m

go 1.14

-- multiline --
[short description
more

detail
suffix]