add operations test

pkg/services/apiserver/builder/openapi.go

@@ -3,7 +3,6 @@ package builder
 import (
 	"bytes"
 	"encoding/json"
-	"iter"
 	"maps"
 	"net/http"
 	"strings"
@@ -236,37 +235,31 @@ func getOpenAPIPostProcessor(version string, builders []APIGroupBuilder, gvs []s
 	}
 }
 
-func GetPathOperations(path *spec3.Path) iter.Seq2[string, *spec3.Operation] {
-	return func(yield func(string, *spec3.Operation) bool) {
-		if path.Get != nil && !yield(http.MethodGet, path.Get) {
-			return
-		}
-		if path.Get != nil && !yield(http.MethodGet, path.Get) {
-			return
-		}
-		if path.Head != nil && !yield(http.MethodHead, path.Head) {
-			return
-		}
-		if path.Delete != nil && !yield(http.MethodDelete, path.Delete) {
-			return
-		}
-		if path.Patch != nil && !yield(http.MethodPatch, path.Patch) {
-			return
-		}
-		if path.Post != nil && !yield(http.MethodPost, path.Post) {
-			return
-		}
-		if path.Post != nil && !yield(http.MethodPost, path.Post) {
-			return
-		}
-		if path.Put != nil && !yield(http.MethodPut, path.Put) {
-			return
-		}
-		if path.Trace != nil && !yield(http.MethodTrace, path.Trace) {
-			return
-		}
-		if path.Options != nil && !yield(http.MethodOptions, path.Options) {
-			return
-		}
+func GetPathOperations(path *spec3.Path) map[string]*spec3.Operation {
+	ops := make(map[string]*spec3.Operation)
+	if path.Get != nil {
+		ops[http.MethodGet] = path.Get
 	}
+	if path.Head != nil {
+		ops[http.MethodHead] = path.Head
+	}
+	if path.Delete != nil {
+		ops[http.MethodDelete] = path.Delete
+	}
+	if path.Post != nil {
+		ops[http.MethodPost] = path.Post
+	}
+	if path.Put != nil {
+		ops[http.MethodPut] = path.Put
+	}
+	if path.Patch != nil {
+		ops[http.MethodPatch] = path.Patch
+	}
+	if path.Trace != nil {
+		ops[http.MethodTrace] = path.Trace
+	}
+	if path.Options != nil {
+		ops[http.MethodOptions] = path.Options
+	}
+	return ops
 }

pkg/services/apiserver/builder/openapi_test.go

@@ -0,0 +1,76 @@
+package builder
+
+import (
+	"slices"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"k8s.io/kube-openapi/pkg/spec3"
+)
+
+func TestOpenAPI_GetPathOperations(t *testing.T) {
+	testCases := []struct {
+		name    string
+		input   *spec3.Path
+		expect  []string // the methods we should see
+		exclude []string // the methods we should never see
+	}{
+		{
+			name: "some operations",
+			input: &spec3.Path{
+				PathProps: spec3.PathProps{
+					Get:    &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "get"}},
+					Post:   &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "post"}},
+					Delete: &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "delete"}},
+				},
+			},
+			expect:  []string{"GET", "POST", "DELETE"},
+			exclude: []string{"PUT", "PATCH", "OPTIONS", "HEAD", "TRACE"},
+		},
+		{
+			name: "all operations",
+			input: &spec3.Path{
+				PathProps: spec3.PathProps{
+					Get:     &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "get"}},
+					Post:    &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "post"}},
+					Delete:  &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "delete"}},
+					Put:     &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "put"}},
+					Patch:   &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "patch"}},
+					Options: &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "options"}},
+					Head:    &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "head"}},
+					Trace:   &spec3.Operation{OperationProps: spec3.OperationProps{Summary: "trace"}},
+				},
+			},
+			expect:  []string{"GET", "POST", "DELETE", "PUT", "PATCH", "OPTIONS", "HEAD", "TRACE"},
+			exclude: []string{},
+		},
+	}
+	for _, tt := range testCases {
+		t.Run(tt.name, func(t *testing.T) {
+			expect := make(map[string]bool)
+			for _, k := range tt.expect {
+				expect[k] = true
+			}
+
+			for k, op := range GetPathOperations(tt.input) {
+				require.NotNil(t, op)
+				require.Equal(t, strings.ToLower(k), op.Summary)
+
+				if !expect[k] {
+					if slices.Contains(tt.expect, k) {
+						require.Fail(t, "method returned multiple times", k)
+					} else {
+						require.Fail(t, "unexpected method", k)
+					}
+				}
+				delete(expect, k)
+				require.NotContains(t, tt.exclude, k, "exclude")
+			}
+
+			if len(expect) > 0 {
+				require.Fail(t, "missing expected method", expect)
+			}
+		})
+	}
+}