Function TestSpec_PublicAPI_NormalizeWhitespace

pkg/stringutil/spec_test.go:73–96

TestSpec_PublicAPI_NormalizeWhitespace validates the documented behavior of NormalizeWhitespace as described in the package README.md. Specification: "Normalizes trailing whitespace in multi-line content. Trims trailing spaces and tabs from every line, then ensures the content ends with exactly one

(t *testing.T)

// trailing spaces and tabs from every line, then ensures the content ends with
// exactly one newline (or is empty)."
func TestSpec_PublicAPI_NormalizeWhitespace(t *testing.T) {
	t.Run("trims trailing spaces from each line", func(t *testing.T) {
		input := "line one   \nline two\t\t\nline three"
		result := NormalizeWhitespace(input)
		for line := range strings.SplitSeq(strings.TrimRight(result, "\n"), "\n") {
			assert.Equal(t, strings.TrimRight(line, " \t"), line,
				"each line should have no trailing spaces or tabs")
		}
	})

	t.Run("ensures content ends with exactly one newline", func(t *testing.T) {
		result := NormalizeWhitespace("content\n\n\n")
		assert.True(t, strings.HasSuffix(result, "\n"),
			"non-empty result should end with a newline")
		assert.False(t, strings.HasSuffix(result, "\n\n"),
			"result should not end with multiple newlines")
	})

	t.Run("empty input returns empty (no trailing newline added)", func(t *testing.T) {
		result := NormalizeWhitespace("")
		assert.Empty(t, result,
			"empty input should remain empty (no trailing newline added)")
	})
}

// TestSpec_PublicAPI_ParseVersionValue validates the documented behavior of
// ParseVersionValue as described in the package README.md.