Added escape sequences

tests/examples_test.go

@@ -15,7 +15,7 @@ var examples = []struct {
 	Output   string
 	ExitCode int
 }{
-	{"hello", "", "Hello", 0},
+	{"hello", "", "Hello\n", 0},
 	{"factorial", "", "120", 0},
 	{"fibonacci", "", "55", 0},
 	{"gcd", "", "21", 0},

tests/programs/escape-rune.q

@@ -0,0 +1,9 @@
+main() {
+	assert '\0' == 0
+	assert '\t' == 9
+	assert '\n' == 10
+	assert '\r' == 13
+	assert '\"' == 34
+	assert '\'' == 39
+	assert '\\' == 92
+}

tests/programs/escape-string.q

@@ -0,0 +1,10 @@
+main() {
+	str := "\0\t\n\r\"\'\\"
+	assert str[0] == '\0'
+	assert str[1] == '\t'
+	assert str[2] == '\n'
+	assert str[3] == '\r'
+	assert str[4] == '\"'
+	assert str[5] == '\''
+	assert str[6] == '\\'
+}

tests/programs_test.go

@@ -24,11 +24,13 @@ var programs = []struct {
 	{"reassign", "", "", 0},
 	{"reuse", "", "", 0},
 	{"return", "", "", 0},
+	{"math", "", "", 0},
+	{"precedence", "", "", 0},
 	{"binary", "", "", 0},
 	{"octal", "", "", 0},
 	{"hexadecimal", "", "", 0},
-	{"math", "", "", 0},
-	{"precedence", "", "", 0},
+	{"escape-rune", "", "", 0},
+	{"escape-string", "", "", 0},
 	{"bitwise-and", "", "", 0},
 	{"bitwise-or", "", "", 0},
 	{"bitwise-xor", "", "", 0},