unbackslash_test.go

// ================================================================
// Most Miller tests (thousands of them) are command-line-driven via
// mlr regtest. Here are some cases needing special focus.
// ================================================================

package lib

import (
	"testing"
)

type tDataForUnbackslash struct {
	input          string
	expectedOutput string
}

// Note we are here dealing with Go's backslashing conventions.
// At the Miller user-space level this is simply "\t" -> TAB, etc.
var dataForUnbackslash = []tDataForUnbackslash{
	{"", ""},
	{"abcde", "abcde"},
	{`\1`, `\1`},
	{`a\tb\tc`, "a\tb\tc"},
	{`a\fb\rc`, "a\fb\rc"},
	{`a"b"c`, `a"b"c`},
	{`a\"b\"c`, `a"b"c`},
	{`a\102c`, `aBc`},
	{`a\x42c`, `aBc`},
	{`[\101\102\103]`, `[ABC]`},
	{`[\x44\x45\x46]`, `[DEF]`},
	{`\u2766`, `❦`},
	{`\U00010877`, `𐡷`},
	{`a\u0062c`, `abc`},
}

func TestUnbackslash(t *testing.T) {
	for i, entry := range dataForUnbackslash {
		actualOutput := UnbackslashStringLiteral(entry.input)
		if actualOutput != entry.expectedOutput {
			t.Fatalf("case %d input \"%s\" expected \"%s\" got \"%s\"\n",
				i, entry.input, entry.expectedOutput, actualOutput,
			)
		}
	}
}