1 files changed, 62 insertions, 0 deletions
diff --git a/tests/functional/string-round-trip/uuid.go b/tests/functional/string-round-trip/uuid.go
new file mode 100644
index 0000000..000d3fb
--- /dev/null
+++ b/tests/functional/string-round-trip/uuid.go
@@ -0,0 +1,62 @@
+package uuid
+
+import (
+	"fmt"
+	"os"
+	"reflect"
+)
+
+
+
+func showColour() bool {
+	return os.Getenv("NO_COLOUR") == ""
+}
+
+func testing(message string, body func()) {
+	if showColour() {
+		fmt.Fprintf(
+			os.Stderr,
+			"\033[0;33mtesting\033[0m: %s... ",
+			message,
+		)
+		body()
+		fmt.Fprintf(os.Stderr, "\033[0;32mOK\033[0m.\n")
+	} else {
+		fmt.Fprintf(os.Stderr, "testing: %s... ", message)
+		body()
+		fmt.Fprintf(os.Stderr, "OK.\n")
+	}
+}
+
+func assertEq(given any, expected any) {
+	if !reflect.DeepEqual(given, expected) {
+		if showColour() {
+			fmt.Fprintf(os.Stderr, "\033[0;31mERR\033[0m.\n")
+		} else {
+			fmt.Fprintf(os.Stderr, "ERR.\n")
+		}
+		fmt.Fprintf(os.Stderr, "given != expected\n")
+		fmt.Fprintf(os.Stderr, "given:    %#v\n", given)
+		fmt.Fprintf(os.Stderr, "expected: %#v\n", expected)
+		os.Exit(1)
+	}
+}
+
+
+
+func MainTest() {
+	testing("string is the same after round-trip", func() {
+		str1 := New().String()
+		id, err := FromString(str1)
+		assertEq(err, nil)
+		str2 := id.String()
+		assertEq(str1, str2)
+	})
+
+	testing("UUID is the same after round-trip", func() {
+		id1 := New()
+		id2, err := FromString(id1.String())
+		assertEq(err, nil)
+		assertEq(id1, id2)
+	})
+}