Chore: Add test with headers with params with no values #1727

consumer/junit5/src/test/java/au/com/dius/pact/consumer/junit5/HeadersWithParametersTest.java

@@ -0,0 +1,51 @@
+package au.com.dius.pact.consumer.junit5;
+
+import au.com.dius.pact.consumer.MockServer;
+import au.com.dius.pact.consumer.dsl.PactBuilder;
+import au.com.dius.pact.consumer.dsl.PactDslWithProvider;
+import au.com.dius.pact.core.model.PactSpecVersion;
+import au.com.dius.pact.core.model.RequestResponsePact;
+import au.com.dius.pact.core.model.V4Pact;
+import au.com.dius.pact.core.model.annotations.Pact;
+import org.apache.hc.client5.http.fluent.Request;
+import org.apache.hc.core5.http.ClassicHttpResponse;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import java.io.IOException;
+import java.util.Map;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+
+// Issue #1727
+@ExtendWith(PactConsumerTestExt.class)
+@PactTestFor(providerName = "HeadersWithParametersProvider", pactVersion = PactSpecVersion.V3)
+public class HeadersWithParametersTest {
+  Map<String, String> headers = Map.of(
+    "strict-transport-security", "max-age=3600; includeSubDomains; reload",
+    "Content-Security-Policy", "default-src: 'none'; frame-ancestors 'none'; base-uri 'self'"
+  );
+  @Pact(consumer = "HeadersWithParametersConsumer")
+  public RequestResponsePact pact(PactDslWithProvider builder) {
+    return builder
+      .uponReceiving("retrieving header data")
+        .path("/path")
+        .method("POST")
+        .headers(headers)
+      .willRespondWith()
+        .headers(headers)
+        .status(200)
+      .toPact();
+  }
+
+  @Test
+  void testHeaders(MockServer mockServer) throws IOException {
+    ClassicHttpResponse httpResponse = (ClassicHttpResponse) Request.post(mockServer.getUrl() + "/path")
+            .addHeader("strict-transport-security", "max-age=3600; includeSubDomains; reload")
+            .addHeader("Content-Security-Policy", "default-src: 'none'; frame-ancestors 'none'; base-uri 'self'")
+            .execute().returnResponse();
+    assertThat(httpResponse.getCode(), is(equalTo(200)));
+  }
+}