Merge pull request #2056 from k8s-infra-cherrypick-robot/cherry-pick-2055-to-release-0.7

[release-0.7] Clarifying HTTPRoute exact match behavior

Author: k8s-ci-robot

apis/v1beta1/httproute_types.go

@@ -273,7 +273,9 @@ type HTTPRouteRule struct {
 type PathMatchType string
 
 const (
-	// Matches the URL path exactly and with case sensitivity.
+	// Matches the URL path exactly and with case sensitivity. This means that
+	// an exact path match on `/abc` will only match requests to `/abc`, NOT
+	// `/abc/`, `/Abc`, or `/abcd`.
 	PathMatchExact PathMatchType = "Exact"
 
 	// Matches based on a URL path prefix split by `/`. Matching is

conformance/tests/httproute-exact-path-matching.go

@@ -63,6 +63,9 @@ var HTTPExactPathMatching = suite.ConformanceTest{
 			}, {
 				Request:  http.Request{Path: "/two/"},
 				Response: http.Response{StatusCode: 404},
+			}, {
+				Request:  http.Request{Path: "/Two"},
+				Response: http.Response{StatusCode: 404},
 			},
 		}