clawbot
d52588d635
CollapseWhitespace turns every run of whitespace into a single space and trims the ends, so a block of text becomes one tidy line. Comes with a doc comment and table-driven tests. (closes #7) Model: opus-5
37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
package util
|
|
|
|
import "testing"
|
|
|
|
// Written as a code point so that it is visible in the source rather than
|
|
// looking like an ordinary space.
|
|
const nonBreakingSpace = string(rune(0x00a0))
|
|
|
|
func TestCollapseWhitespace(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
input string
|
|
expected string
|
|
}{
|
|
{"nothing to change", "one two", "one two"},
|
|
{"leading and trailing spaces", " one two ", "one two"},
|
|
{"run in the middle", "one two", "one two"},
|
|
{"tabs and newlines", "one\t\ttwo\nthree", "one two three"},
|
|
{"windows line endings", "one\r\ntwo", "one two"},
|
|
{"non-breaking space", "one" + nonBreakingSpace + "two", "one two"},
|
|
{"mixed whitespace run", "one \t" + nonBreakingSpace + " two", "one two"},
|
|
{"only whitespace", " \t\n ", ""},
|
|
{"empty string", "", ""},
|
|
{"single word with padding", "\tword\n", "word"},
|
|
{"paragraph becomes one line", "first line\n\nsecond line\n", "first line second line"},
|
|
}
|
|
|
|
for _, test := range tests {
|
|
t.Run(test.name, func(t *testing.T) {
|
|
got := CollapseWhitespace(test.input)
|
|
if got != test.expected {
|
|
t.Errorf("expected %q got %q", test.expected, got)
|
|
}
|
|
})
|
|
}
|
|
}
|