add unit tests for gateway api

unittests/helm/httproute/structured-paths.yaml

@@ -0,0 +1,56 @@
+suite: Test httproute with structured paths
+templates:
+  - templates/gitea/httproute.yaml
+tests:
+  - it: should work with a plain string path
+    set:
+      gateway.httpRoute.enabled: true
+      gateway.httpRoute.paths:
+        - /
+    asserts:
+      - hasDocuments:
+          count: 1
+      - isKind:
+          of: HTTPRoute
+      - equal:
+          path: spec.rules[0].matches[0].path.type
+          value: "PathPrefix"
+      - equal:
+          path: spec.rules[0].matches[0].path.value
+          value: "/"
+
+  - it: should work with structured path definitions and per-path pathType
+    set:
+      gateway.httpRoute.enabled: true
+      gateway.httpRoute.paths:
+        - path: /
+        - path: /foo
+          pathType: Exact
+    asserts:
+      - hasDocuments:
+          count: 1
+      - isKind:
+          of: HTTPRoute
+      - equal:
+          path: spec.rules[0].matches[0].path.type
+          value: "PathPrefix"
+      - equal:
+          path: spec.rules[0].matches[0].path.value
+          value: "/"
+      - equal:
+          path: spec.rules[1].matches[0].path.type
+          value: "Exact"
+      - equal:
+          path: spec.rules[1].matches[0].path.value
+          value: "/foo"
+
+  - it: should allow overriding the default pathType
+    set:
+      gateway.httpRoute.enabled: true
+      gateway.httpRoute.pathType: Exact
+      gateway.httpRoute.paths:
+        - /
+    asserts:
+      - equal:
+          path: spec.rules[0].matches[0].path.type
+          value: "Exact"