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Truncate too long lines #24

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Truncate too long lines #24

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8 changes: 7 additions & 1 deletion lib/power_assert/context.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
module PowerAssert
class Context
Value = Struct.new(:name, :value, :lineno, :column)
MAX_LINE_LENGTH = 500

def initialize(base_caller_length)
@fired = false
Expand Down Expand Up @@ -92,12 +93,17 @@ def build_assertion_message(parser, return_values)
map_to = vals.each_with_object({}) do |j, h|
h[j.column.to_s.to_sym] = [l, '|', ' '][i.column <=> j.column]
end
lines << encoding_safe_rstrip(sprintf(fmt, map_to))
line = encoding_safe_rstrip(sprintf(fmt, map_to))
lines << truncate(line, MAX_LINE_LENGTH)
end
end
lines.join("\n")
end

def truncate(line, length)
"#{line[0..length]}#{'...' if line.size > length}"
end

def detect_path(parser, return_values)
return parser.call_paths.flatten.uniq if parser.method_id_set.empty?
all_paths = parser.call_paths
Expand Down