fix: Fix failing unit tests

Author: ludovicianul

src/main/java/dev/dochia/cli/core/model/HttpResponse.java

@@ -5,16 +5,13 @@
 import dev.dochia.cli.core.model.ann.Exclude;
 import dev.dochia.cli.core.util.KeyValuePair;
 import dev.dochia.cli.core.util.WordUtils;
-import java.io.IOException;
-import java.net.ProtocolException;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import java.util.Locale;
-import java.util.Optional;
 import lombok.Builder;
 import lombok.Getter;
 
+import java.io.IOException;
+import java.net.ProtocolException;
+import java.util.*;
+
 /**
  * Model class used to hold http response details.
  */
@@ -101,7 +98,7 @@ public boolean containsHeader(String name) {
      * @return A key-value pair representing the header, or {@code null} if no such header is found.
      */
     public KeyValuePair<String, String> getHeader(String name) {
-        return headers.stream()
+        return Optional.ofNullable(headers).orElse(List.of()).stream()
                 .filter(header -> WordUtils.matchesAsLowerCase(header.getKey(), name))
                 .findFirst()
                 .orElse(null);

src/test/java/dev/dochia/cli/core/playbook/body/CustomHttpMethodsPlaybookTest.java

@@ -6,6 +6,7 @@
 import dev.dochia.cli.core.playbook.executor.SimpleExecutor;
 import dev.dochia.cli.core.report.TestCaseListener;
 import dev.dochia.cli.core.report.TestReportsGenerator;
+import dev.dochia.cli.core.util.KeyValuePair;
 import io.quarkus.test.junit.QuarkusTest;
 import io.quarkus.test.junit.mockito.InjectSpy;
 import io.swagger.v3.oas.models.PathItem;
@@ -51,7 +52,7 @@ void shouldCallServiceAndReportErrorWhenServiceRespondsWith200() {
     @Test
     void shouldCallServiceAndReportInfoWhenServiceRespondsWith405() {
         PlaybookData data = PlaybookData.builder().pathItem(new PathItem()).reqSchema(new StringSchema()).requestContentTypes(List.of("application/json")).build();
-        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).httpMethod("POST").build();
+        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).httpMethod("POST").headers(List.of(new KeyValuePair<>("Allow","GET"))).build();
         Mockito.when(serviceCaller.call(Mockito.any())).thenReturn(httpResponse);
 
         customHttpMethodsPlaybook.run(data);
@@ -71,7 +72,7 @@ void shouldCallServiceAndReportWarnWhenServiceRespondsWith400() {
     @Test
     void shouldRunOncePerPath() {
         PlaybookData data = PlaybookData.builder().pathItem(new PathItem()).reqSchema(new StringSchema()).path("/test").requestContentTypes(List.of("application/json")).build();
-        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).httpMethod("POST").build();
+        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).headers(List.of(new KeyValuePair<>("Allow","GET"))).httpMethod("POST").build();
         Mockito.when(serviceCaller.call(Mockito.any())).thenReturn(httpResponse);
 
         customHttpMethodsPlaybook.run(data);

src/test/java/dev/dochia/cli/core/playbook/body/NonRestHttpMethodsPlaybookTest.java

@@ -6,6 +6,7 @@
 import dev.dochia.cli.core.playbook.executor.SimpleExecutor;
 import dev.dochia.cli.core.report.TestCaseListener;
 import dev.dochia.cli.core.report.TestReportsGenerator;
+import dev.dochia.cli.core.util.KeyValuePair;
 import io.quarkus.test.junit.QuarkusTest;
 import io.quarkus.test.junit.mockito.InjectSpy;
 import io.swagger.v3.oas.models.PathItem;
@@ -51,7 +52,7 @@ void shouldCallServiceAndReportErrorWhenServiceRespondsWith200() {
     @Test
     void shouldCallServiceAndReportInfoWhenServiceRespondsWith405() {
         PlaybookData data = PlaybookData.builder().pathItem(new PathItem()).reqSchema(new StringSchema()).requestContentTypes(List.of("application/json")).build();
-        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).httpMethod("POST").build();
+        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).headers(List.of(new KeyValuePair<>("Allow","GET"))).httpMethod("POST").build();
         Mockito.when(serviceCaller.call(Mockito.any())).thenReturn(httpResponse);
 
         nonRestHttpMethodsPlaybook.run(data);
@@ -71,7 +72,7 @@ void shouldCallServiceAndReportWarnWhenServiceRespondsWith400() {
     @Test
     void shouldRunOncePerPath() {
         PlaybookData data = PlaybookData.builder().pathItem(new PathItem()).reqSchema(new StringSchema()).path("/test").requestContentTypes(List.of("application/json")).build();
-        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).httpMethod("POST").build();
+        HttpResponse httpResponse = HttpResponse.builder().body("{}").responseCode(405).headers(List.of(new KeyValuePair<>("Allow","GET"))).httpMethod("POST").build();
         Mockito.when(serviceCaller.call(Mockito.any())).thenReturn(httpResponse);
 
         nonRestHttpMethodsPlaybook.run(data);