[fix][schema] Fix the schema registry tests and enabled the schema tests in CI (#1835)

- Fix the schema registry test is not enabled in GitHub CI
- Fix the failed tests after #1826 merged

(cherry picked from commit 9b01854)

Author: codelipenghui

.github/workflows/pr-tests.yml

@@ -37,6 +37,9 @@ jobs:
     - name: Build with Maven skipTests
       run: mvn clean checkstyle:check install -ntp -B -DskipTests
 
+    - name: schema registry test after build
+      run: mvn test -ntp -B -DfailIfNoTests=false -pl schema-registry
+
     - name: tests module
       run: mvn test -ntp -B -DfailIfNoTests=false '-Dtest=!Docker*Test,!*Proxy*Test' -pl tests
       timeout-minutes: 120

schema-registry/src/test/java/io/streamnative/pulsar/handlers/kop/schemaregistry/SchemaRegistryHandlerTest.java

@@ -72,8 +72,8 @@ public void testBasicJsonApi() throws Exception {
     @Test
     public void testBasicJsonApiError401() throws Exception {
         assertEquals("{\n"
-                        + "  \"message\" : \"Bad auth\",\n"
-                        + "  \"error_code\" : 401\n"
+                        + "  \"error_code\" : 401,\n"
+                        + "  \"message\" : \"Bad auth\"\n"
                         + "}",
                 server.executePost("/subjects/errorsubject401", "{\n"
                         + "  \"value\" : \"/json/test\"\n"
@@ -83,8 +83,8 @@ public void testBasicJsonApiError401() throws Exception {
     @Test
     public void testBasicJsonApiError403() throws Exception {
         assertEquals("{\n"
-                        + "  \"message\" : \"Forbidden\",\n"
-                        + "  \"error_code\" : 403\n"
+                        + "  \"error_code\" : 403,\n"
+                        + "  \"message\" : \"Forbidden\"\n"
                         + "}",
                 server.executePost("/subjects/errorsubject403", "{\n"
                         + "  \"value\" : \"/json/test\"\n"
@@ -94,8 +94,8 @@ public void testBasicJsonApiError403() throws Exception {
     @Test
     public void testBasicJsonApiError500() throws Exception {
         assertEquals("{\n"
-                        + "  \"message\" : \"Error\",\n"
-                        + "  \"error_code\" : 500\n"
+                        + "  \"error_code\" : 500,\n"
+                        + "  \"message\" : \"Error\"\n"
                         + "}",
                 server.executePost("/subjects/errorsubject500", "{\n"
                         + "  \"value\" : \"/json/test\"\n"

schema-registry/src/test/java/io/streamnative/pulsar/handlers/kop/schemaregistry/resources/SchemaResourceTest.java

@@ -142,8 +142,7 @@ public void getSchemaBySubjectAndVersion() throws Exception {
                 + "  \"id\" : 1,\n"
                 + "  \"schema\" : \"{SCHEMA-1}\",\n"
                 + "  \"subject\" : \"aaa\",\n"
-                + "  \"version\" : 17,\n"
-                + "  \"type\" : \"AVRO\"\n"
+                + "  \"version\" : 17\n"
                 + "}");
     }
 
@@ -217,8 +216,7 @@ public void getLatestVersionSubject() throws Exception {
                 + "  \"id\" : 3,\n"
                 + "  \"schema\" : \"{SCHEMA3}\",\n"
                 + "  \"subject\" : \"subject1\",\n"
-                + "  \"version\" : 8,\n"
-                + "  \"type\" : \"AVRO\"\n"
+                + "  \"version\" : 8\n"
                 + "}");
 
         server.executeMethod("/subjects/subjectnotexists/versions/latest", "GET",