From 49e2de28306d0a29571011d697377fbff81c1935 Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sat, 29 Apr 2023 19:31:21 +0200
Subject: [PATCH] reference: add BenchmarkParse

    BenchmarkParse
    BenchmarkParse-10    	   12696	     93805 ns/op	    9311 B/op	     185 allocs/op
    PASS

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 reference/regexp_bench_test.go | 270 +++++++++++++++++++++++++++++++++
 1 file changed, 270 insertions(+)
 create mode 100644 reference/regexp_bench_test.go

diff --git a/reference/regexp_bench_test.go b/reference/regexp_bench_test.go
new file mode 100644
index 00000000..12cb6077
--- /dev/null
+++ b/reference/regexp_bench_test.go
@@ -0,0 +1,270 @@
+package reference
+
+import (
+	"strings"
+	"testing"
+)
+
+func BenchmarkParse(b *testing.B) {
+	tests := []regexpMatch{
+		{
+			input: "",
+			match: false,
+		},
+		{
+			input: "short",
+			match: true,
+		},
+		{
+			input: "simple/name",
+			match: true,
+		},
+		{
+			input: "library/ubuntu",
+			match: true,
+		},
+		{
+			input: "docker/stevvooe/app",
+			match: true,
+		},
+		{
+			input: "aa/aa/aa/aa/aa/aa/aa/aa/aa/bb/bb/bb/bb/bb/bb",
+			match: true,
+		},
+		{
+			input: "aa/aa/bb/bb/bb",
+			match: true,
+		},
+		{
+			input: "a/a/a/a",
+			match: true,
+		},
+		{
+			input: "a/a/a/a/",
+			match: false,
+		},
+		{
+			input: "a//a/a",
+			match: false,
+		},
+		{
+			input: "a",
+			match: true,
+		},
+		{
+			input: "a/aa",
+			match: true,
+		},
+		{
+			input: "a/aa/a",
+			match: true,
+		},
+		{
+			input: "foo.com",
+			match: true,
+		},
+		{
+			input: "foo.com/",
+			match: false,
+		},
+		{
+			input: "foo.com:8080/bar",
+			match: true,
+		},
+		{
+			input: "foo.com:http/bar",
+			match: false,
+		},
+		{
+			input: "foo.com/bar",
+			match: true,
+		},
+		{
+			input: "foo.com/bar/baz",
+			match: true,
+		},
+		{
+			input: "localhost:8080/bar",
+			match: true,
+		},
+		{
+			input: "sub-dom1.foo.com/bar/baz/quux",
+			match: true,
+		},
+		{
+			input: "blog.foo.com/bar/baz",
+			match: true,
+		},
+		{
+			input: "a^a",
+			match: false,
+		},
+		{
+			input: "aa/asdf$$^/aa",
+			match: false,
+		},
+		{
+			input: "asdf$$^/aa",
+			match: false,
+		},
+		{
+			input: "aa-a/a",
+			match: true,
+		},
+		{
+			input: strings.Repeat("a/", 128) + "a",
+			match: true,
+		},
+		{
+			input: "a-/a/a/a",
+			match: false,
+		},
+		{
+			input: "foo.com/a-/a/a",
+			match: false,
+		},
+		{
+			input: "-foo/bar",
+			match: false,
+		},
+		{
+			input: "foo/bar-",
+			match: false,
+		},
+		{
+			input: "foo-/bar",
+			match: false,
+		},
+		{
+			input: "foo/-bar",
+			match: false,
+		},
+		{
+			input: "_foo/bar",
+			match: false,
+		},
+		{
+			input: "foo_bar",
+			match: true,
+		},
+		{
+			input: "foo_bar.com",
+			match: true,
+		},
+		{
+			input: "foo_bar.com:8080",
+			match: false,
+		},
+		{
+			input: "foo_bar.com:8080/app",
+			match: false,
+		},
+		{
+			input: "foo.com/foo_bar",
+			match: true,
+		},
+		{
+			input: "____/____",
+			match: false,
+		},
+		{
+			input: "_docker/_docker",
+			match: false,
+		},
+		{
+			input: "docker_/docker_",
+			match: false,
+		},
+		{
+			input: "b.gcr.io/test.example.com/my-app",
+			match: true,
+		},
+		{
+			input: "xn--n3h.com/myimage", // ☃.com in punycode
+			match: true,
+		},
+		{
+			input: "xn--7o8h.com/myimage", // 🐳.com in punycode
+			match: true,
+		},
+		{
+			input: "example.com/xn--7o8h.com/myimage", // 🐳.com in punycode
+			match: true,
+		},
+		{
+			input: "example.com/some_separator__underscore/myimage",
+			match: true,
+		},
+		{
+			input: "example.com/__underscore/myimage",
+			match: false,
+		},
+		{
+			input: "example.com/..dots/myimage",
+			match: false,
+		},
+		{
+			input: "example.com/.dots/myimage",
+			match: false,
+		},
+		{
+			input: "example.com/nodouble..dots/myimage",
+			match: false,
+		},
+		{
+			input: "example.com/nodouble..dots/myimage",
+			match: false,
+		},
+		{
+			input: "docker./docker",
+			match: false,
+		},
+		{
+			input: ".docker/docker",
+			match: false,
+		},
+		{
+			input: "docker-/docker",
+			match: false,
+		},
+		{
+			input: "-docker/docker",
+			match: false,
+		},
+		{
+			input: "do..cker/docker",
+			match: false,
+		},
+		{
+			input: "do__cker:8080/docker",
+			match: false,
+		},
+		{
+			input: "do__cker/docker",
+			match: true,
+		},
+		{
+			input: "b.gcr.io/test.example.com/my-app",
+			match: true,
+		},
+		{
+			input: "registry.io/foo/project--id.module--name.ver---sion--name",
+			match: true,
+		},
+		{
+			input: "Asdf.com/foo/bar", // uppercase character in hostname
+			match: true,
+		},
+		{
+			input: "Foo/FarB", // uppercase characters in remote name
+			match: false,
+		},
+	}
+
+	b.ReportAllocs()
+	for i := 0; i < b.N; i++ {
+		for _, tc := range tests {
+			_, _ = Parse(tc.input)
+		}
+	}
+}