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higress/pkg/ingress/kube/mcpserver/provider_test.go

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// Copyright (c) 2025 Alibaba Group Holding Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mcpserver
import (
"testing"
"github.com/google/go-cmp/cmp"
)
func TestMcpServerCache_GetSet(t *testing.T) {
testCases := []struct {
name string
skip bool
init []*McpServer
input []*McpServer
expect []*McpServer
changed bool
}{
{
name: "nil",
init: nil,
input: nil,
changed: false,
expect: nil,
},
{
name: "nil to non-nil",
init: nil,
input: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
changed: true,
expect: []*McpServer{
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
},
},
{
name: "non-nil to non-nil (length increase)",
init: []*McpServer{
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
},
input: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
changed: true,
expect: []*McpServer{
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
},
},
{
name: "non-nil to non-nil (length decrease)",
init: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
input: []*McpServer{
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
},
changed: true,
expect: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
},
},
{
name: "non-nil to non-nil (length unchanged + name field changed)",
init: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
input: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3-1",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
changed: true,
expect: []*McpServer{
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3-1",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
},
},
{
name: "non-nil to non-nil (length unchanged + non-name field changed)",
init: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
input: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar-2.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test4",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
changed: true,
expect: []*McpServer{
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar-2.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test4",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
},
},
{
name: "non-nil to non-nil (content unchanged + order unchanged)",
init: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
input: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
changed: false,
expect: []*McpServer{
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
},
},
{
name: "non-nil to non-nil (content unchanged + order changed)",
init: []*McpServer{
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
},
input: []*McpServer{
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
},
changed: false,
expect: []*McpServer{
{
Name: "test1",
Domains: nil,
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test1",
UpstreamType: UpstreamTypeRest,
EnablePathRewrite: false,
PathRewritePrefix: "",
},
{
Name: "test2",
Domains: []string{"www.foo.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test2",
UpstreamType: UpstreamTypeSSE,
EnablePathRewrite: true,
PathRewritePrefix: "/test",
},
{
Name: "test3",
Domains: []string{"www.bar.com"},
PathMatchType: ExactMatchType,
PathMatchValue: "/mcp/test3",
UpstreamType: UpstreamTypeStreamable,
EnablePathRewrite: true,
PathRewritePrefix: "/",
},
},
},
}
for _, tt := range testCases {
if tt.skip {
continue
}
t.Run(tt.name, func(t *testing.T) {
provider := &McpServerCache{}
if provider.GetMcpServers() != nil {
t.Fatalf("GetMcpServers doesn't return nil before testing.")
}
_ = provider.SetMcpServers(tt.init)
changed := provider.SetMcpServers(tt.input)
if changed != tt.changed {
t.Fatalf("actual changed %t != expect changed %t", changed, tt.changed)
return
}
actual := provider.GetMcpServers()
if len(actual) != len(tt.expect) {
t.Fatalf("actual length %d != expect length %d", len(actual), len(tt.expect))
}
for i := range actual {
if diff := cmp.Diff(tt.expect[i], actual[i]); diff != "" {
t.Fatalf("TestMcpServerCache_GetSet() mismatch (-want +got):\n%s", diff)
}
}
})
}
}
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