4c57d201a4
The source headers, LICENSE files, and license metadata had drifted apart. Align the entire project to MIT: - Convert every source-file header to the MIT text across all comment styles (Go, TS, TSX, JS, MJS, SQL, CSS, GraphQL, shell), including SPDX-License-Identifier tags - Set the root and cookie-banner LICENSE files to the MIT text with a "MIT License" title line - Switch the package.json license fields, Docker image label, and cookie-banner README to MIT - Update docs and the genmodels header generator accordingly - Normalize copyright lines to a single format (Copyright (c) <year(s)> Probo Inc <hello@probo.com>.): unify the hello@getprobo.com and hello@probo.inc emails to hello@probo.com and the comma-separated years to a hyphenated range Genuine third-party references are intentionally left untouched: the Lucide icon attributions (Lucide is ISC) and the trivy dependency license allowlist. Signed-off-by: Sacha Al Himdani <sacha@probo.com>
91 lines
2.9 KiB
Go
91 lines
2.9 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@probo.com>.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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package netx_test
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"go.probo.inc/probo/pkg/netx"
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)
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func TestIsLoopback(t *testing.T) {
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t.Parallel()
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tests := []struct {
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name string
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host string
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want bool
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}{
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// Localhost by name.
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{"localhost", "localhost", true},
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// IPv4 loopback addresses (127.0.0.0/8).
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{"ipv4 canonical loopback", "127.0.0.1", true},
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{"ipv4 loopback high octet", "127.255.255.255", true},
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{"ipv4 loopback alternate", "127.0.0.2", true},
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{"ipv4 loopback 127.1.2.3", "127.1.2.3", true},
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// IPv6 loopback.
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{"ipv6 loopback", "::1", true},
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// IPv4-mapped IPv6 loopback.
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{"ipv4-mapped ipv6 loopback", "::ffff:127.0.0.1", true},
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{"ipv4-mapped ipv6 loopback alternate", "::ffff:127.0.0.2", true},
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// Non-loopback addresses.
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{"ipv4 private 10.x", "10.0.0.1", false},
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{"ipv4 private 192.168.x", "192.168.1.1", false},
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{"ipv4 private 172.16.x", "172.16.0.1", false},
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{"ipv4 public", "8.8.8.8", false},
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{"ipv4 all interfaces", "0.0.0.0", false},
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{"ipv6 all interfaces", "::", false},
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{"ipv6 link-local", "fe80::1", false},
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{"ipv6 public", "2001:db8::1", false},
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{"ipv4-mapped ipv6 non-loopback", "::ffff:192.168.1.1", false},
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// Hostnames that are not localhost.
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{"example.com", "example.com", false},
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{"localhost.localdomain", "localhost.localdomain", false},
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{"myhost", "myhost", false},
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// Edge cases.
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{"empty string", "", false},
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{"whitespace", " ", false},
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{"localhost with trailing dot", "localhost.", false},
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{"uppercase LOCALHOST", "LOCALHOST", false},
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{"mixed case Localhost", "Localhost", false},
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{"128.0.0.1 not loopback", "128.0.0.1", false},
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{"126.255.255.255 not loopback", "126.255.255.255", false},
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}
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for _, tt := range tests {
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t.Run(
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tt.name,
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func(t *testing.T) {
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t.Parallel()
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assert.Equal(t, tt.want, netx.IsLoopback(tt.host))
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},
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)
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}
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}
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