ACC-2351 Accept single Term as list of Terms in Expression

Author: thijslemmens

opa-async-java-client/src/test/java/com/contentgrid/opa/client/api/PolicyApiTest.java

@@ -0,0 +1,36 @@
+package com.contentgrid.opa.client.api;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.*;
+
+import com.contentgrid.opa.client.api.PolicyApi.ListPoliciesResponse;
+import com.contentgrid.opa.rego.ast.Term;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.json.JsonMapper;
+import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
+import org.junit.jupiter.api.Test;
+
+class PolicyApiTest {
+
+    @Test
+    void testPoliciesResponseObjectMapping() {
+        var objectMapper = JsonMapper.builder()
+                .disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES)
+                .build()
+                .registerModule(new JavaTimeModule());
+
+        // read listpoliciesresponse.json into ListPoliciesResponse
+        try (var is = getClass().getClassLoader().getResourceAsStream("com/contentgrid/opa/client/api/policyapi/listpoliciesrsponse.json")) {
+            var response = objectMapper.readValue(is, ListPoliciesResponse.class);
+            assertNotNull(response);
+            assertThat(response.getResult().get(2).getAst().getRules().get(1).getBody()).singleElement().satisfies(expression -> {
+                assertThat(expression.getTerms()).singleElement().isInstanceOfSatisfying(Term.Bool.class, boolTerm -> {
+                    assertThat(boolTerm.getValue()).isTrue();
+                });
+            });
+        } catch (Exception e) {
+            fail("Failed to deserialize ListPoliciesResponse", e);
+        }
+    }
+
+}