Add test for search method binding matching

hapi-fhir-server/src/test/java/ca/uhn/fhir/rest/server/method/SearchMethodBindingTest.java

@@ -0,0 +1,111 @@
+package ca.uhn.fhir.rest.server.method;
+
+import ca.uhn.fhir.context.FhirContext;
+import ca.uhn.fhir.context.RuntimeResourceDefinition;
+import ca.uhn.fhir.rest.annotation.OptionalParam;
+import ca.uhn.fhir.rest.annotation.RequiredParam;
+import ca.uhn.fhir.rest.annotation.Search;
+import ca.uhn.fhir.rest.api.RequestTypeEnum;
+import ca.uhn.fhir.rest.api.server.RequestDetails;
+import com.google.common.collect.ImmutableMap;
+import org.hamcrest.Matchers;
+import org.hl7.fhir.instance.model.api.IBaseResource;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.Map;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class SearchMethodBindingTest {
+
+    private static final TestResourceProvider TEST_RESOURCE_PROVIDER = new TestResourceProvider();
+
+    private FhirContext fhirContext;
+
+    @Before
+    public void setUp() {
+        fhirContext = mock(FhirContext.class);
+        RuntimeResourceDefinition definition = mock(RuntimeResourceDefinition.class);
+        when(definition.isBundle()).thenReturn(false);
+        when(fhirContext.getResourceDefinition(any(Class.class))).thenReturn(definition);
+    }
+
+    @Test // fails
+    public void methodShouldNotMatchWhenExtraUnderscoreQueryParameter() throws NoSuchMethodException {
+        Assert.assertThat(getBinding("param", String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "_extra", new String[]{"test"}))),
+            Matchers.is(false));
+        Assert.assertThat(getBinding("paramAndTest", String.class, String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "_extra", new String[]{"test"}))),
+            Matchers.is(false));
+        Assert.assertThat(getBinding("paramAndUnderscoreTest", String.class, String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "_extra", new String[]{"test"}))),
+            Matchers.is(false));
+    }
+
+    @Test
+    public void methodShouldNotMatchWhenExtraQueryParameter() throws NoSuchMethodException {
+        Assert.assertThat(getBinding("param", String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "extra", new String[]{"test"}))),
+            Matchers.is(false));
+        Assert.assertThat(getBinding("paramAndTest", String.class, String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "extra", new String[]{"test"}))),
+            Matchers.is(false));
+        Assert.assertThat(getBinding("paramAndUnderscoreTest", String.class, String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "extra", new String[]{"test"}))),
+            Matchers.is(false));
+    }
+
+    @Test
+    public void methodMatchesOwnParams() throws NoSuchMethodException {
+        Assert.assertThat(getBinding("param", String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}))),
+            Matchers.is(true));
+        Assert.assertThat(getBinding("paramAndTest", String.class, String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "test", new String[]{"test"}))),
+            Matchers.is(true));
+        Assert.assertThat(getBinding("paramAndUnderscoreTest", String.class, String.class).incomingServerRequestMatchesMethod(
+            mockSearchRequest(ImmutableMap.of("param", new String[]{"value"}, "_test", new String[]{"test"}))),
+            Matchers.is(true));
+    }
+
+    private SearchMethodBinding getBinding(String name, Class<?>... parameters) throws NoSuchMethodException {
+        return new SearchMethodBinding(IBaseResource.class,
+            IBaseResource.class,
+            TestResourceProvider.class.getMethod(name, parameters),
+            fhirContext,
+            TEST_RESOURCE_PROVIDER);
+    }
+
+    private RequestDetails mockSearchRequest(Map<String, String[]> params) {
+        RequestDetails requestDetails = mock(RequestDetails.class);
+        when(requestDetails.getOperation()).thenReturn("_search");
+        when(requestDetails.getRequestType()).thenReturn(RequestTypeEnum.GET);
+        when(requestDetails.getParameters()).thenReturn(params);
+        return requestDetails;
+    }
+
+    private static class TestResourceProvider {
+
+        @Search
+        public IBaseResource param(@RequiredParam(name = "param") String param) {
+            return null;
+        }
+
+        @Search
+        public IBaseResource paramAndTest(@RequiredParam(name = "param") String param, @OptionalParam(name = "test") String test) {
+            return null;
+        }
+
+        @Search
+        public IBaseResource paramAndUnderscoreTest(@RequiredParam(name = "param") String param, @OptionalParam(name = "_test") String test) {
+            return null;
+        }
+
+    }
+
+}