Merge some more parts of #4759

Author: cowtowncoder

src/test/java/com/fasterxml/jackson/databind/deser/creators/TestCreatorsDelegating.java

@@ -8,7 +8,6 @@
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 
-import com.fasterxml.jackson.core.JacksonException;
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonToken;
 
@@ -188,12 +187,7 @@ public void testWithCtorAndDelegate() throws Exception
         mapper.setInjectableValues(new InjectableValues.Std()
             .addValue(String.class, "Pooka")
             );
-        CtorBean711 bean = null;
-        try {
-            bean = mapper.readValue("38", CtorBean711.class);
-        } catch (JacksonException e) {
-            fail("Did not expect problems, got: "+e.getMessage());
-        }
+        CtorBean711 bean = mapper.readValue("38", CtorBean711.class);
         assertEquals(38, bean.age);
         assertEquals("Pooka", bean.name);
     }
@@ -205,12 +199,7 @@ public void testWithFactoryAndDelegate() throws Exception
         mapper.setInjectableValues(new InjectableValues.Std()
             .addValue(String.class, "Fygar")
             );
-        FactoryBean711 bean = null;
-        try {
-            bean = mapper.readValue("38", FactoryBean711.class);
-        } catch (JacksonException e) {
-            fail("Did not expect problems, got: "+e.getMessage());
-        }
+        FactoryBean711 bean = mapper.readValue("38", FactoryBean711.class);
         assertEquals(38, bean.age);
         assertEquals("Fygar", bean.name1);
         assertEquals("Fygar", bean.name2);

src/test/java/com/fasterxml/jackson/databind/deser/filter/TestUnknownPropertyDeserialization.java

@@ -6,7 +6,7 @@
 import org.junit.jupiter.api.Test;
 
 import com.fasterxml.jackson.annotation.*;
-import com.fasterxml.jackson.core.*;
+import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.*;
 import com.fasterxml.jackson.databind.deser.DeserializationProblemHandler;
@@ -212,12 +212,7 @@ public void testUnknownHandlingIgnoreWithFeature() throws Exception
     {
         ObjectMapper mapper = newJsonMapper();
         mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
-        TestBean result = null;
-        try {
-            result = mapper.readValue(new StringReader(JSON_UNKNOWN_FIELD), TestBean.class);
-        } catch (JacksonException jex) {
-            fail("Did not expect a problem, got: "+jex.getMessage());
-        }
+        TestBean result = mapper.readValue(new StringReader(JSON_UNKNOWN_FIELD), TestBean.class);
         assertNotNull(result);
         assertEquals(1, result._a);
         assertNull(result._unknown);

src/test/java/com/fasterxml/jackson/databind/introspect/DefaultCreatorDetection4584Test.java

@@ -12,7 +12,7 @@
 import com.fasterxml.jackson.databind.json.JsonMapper;
 import com.fasterxml.jackson.databind.testutil.DatabindTestUtil;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 // Tests for [databind#4584]: extension point for discovering "Default"
 // Creator (primary Creator, usually constructor, used in case no creator

src/test/java/com/fasterxml/jackson/databind/introspect/DefaultCreatorResolution4620Test.java

@@ -11,7 +11,7 @@
 import com.fasterxml.jackson.databind.json.JsonMapper;
 import com.fasterxml.jackson.databind.testutil.DatabindTestUtil;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 // Tests for [databind#4620]: 
 //

src/test/java/com/fasterxml/jackson/databind/introspect/NoClassDefFoundWorkaroundTest.java

@@ -36,13 +36,7 @@ public void testClassIsMissing()
     public void testDeserialize() throws Exception
     {
         ObjectMapper m = new ObjectMapper();
-        Parent result = null;
-
-        try {
-            result = m.readValue(" { } ", Parent.class);
-        } catch (Exception e) {
-            fail("Should not have had issues, got: "+e);
-        }
+        Parent result = m.readValue(" { } ", Parent.class);
         assertNotNull(result);
     }
 

src/test/java/com/fasterxml/jackson/databind/introspect/TestNameConflicts.java

@@ -95,7 +95,7 @@ public MultipleTheoreticalGetters(@JsonProperty("a") int foo) {
     @Test
     public void testIssue193() throws Exception
     {
-        String json = objectWriter().writeValueAsString(new Bean193(1, 2));
+        String json = MAPPER.writeValueAsString(new Bean193(1, 2));
         assertNotNull(json);
     }
 
@@ -110,25 +110,19 @@ public void testNonConflict() throws Exception
     @Test
     public void testHypotheticalGetters() throws Exception
     {
-        String json = objectWriter().writeValueAsString(new MultipleTheoreticalGetters());
+        String json = MAPPER.writeValueAsString(new MultipleTheoreticalGetters());
         assertEquals(a2q("{'a':3}"), json);
     }
 
     // for [jackson-core#158]
     @Test
     public void testOverrideName() throws Exception
     {
-        final ObjectMapper mapper = newJsonMapper();
-        String json = mapper.writeValueAsString(new CoreBean158());
+        String json = MAPPER.writeValueAsString(new CoreBean158());
         assertEquals(a2q("{'bar':'x'}"), json);
 
         // and back
-        CoreBean158 result = null;
-        try {
-            result = mapper.readValue(a2q("{'bar':'y'}"), CoreBean158.class);
-        } catch (Exception e) {
-            fail("Unexpected failure when reading CoreBean158: "+e);
-        }
+        CoreBean158 result = MAPPER.readValue(a2q("{'bar':'y'}"), CoreBean158.class);
         assertNotNull(result);
         assertEquals("y", result.bar);
     }

src/test/java/com/fasterxml/jackson/databind/jsontype/deftyping/DefaultTypeResolver3505Test.java

@@ -13,6 +13,8 @@
 import java.util.Collection;
 import java.util.List;
 
+import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.*;
 
 // Tests for [databind#3505] causing a NPE when setting a DefaultTypeResolverBuilder
@@ -59,24 +61,21 @@ public TypeDeserializer buildTypeDeserializer(DeserializationConfig config, Java
         }
     }
 
-    public void testDeductionWithDefaultTypeResolverBuilder() {
+    @Test
+    public void testDeductionWithDefaultTypeResolverBuilder() throws Exception {
         final ObjectMapper mapper = jsonMapperBuilder()
                 .registerSubtypes(Parent.ChildOne.class, Parent.ChildTwo.class)
                 .setDefaultTyping(new AssertingTypeResolverBuilder()
                         .init(JsonTypeInfo.Id.DEDUCTION, null))
                 .build();
 
-        try {
-            final Parent firstRead = mapper.readValue("{ \"one\": \"Hello World\" }", Parent.class);
-            assertNotNull(firstRead);
-            assertTrue(firstRead instanceof Parent.ChildOne);
-            assertEquals("Hello World", ((Parent.ChildOne) firstRead).one);
-            final Parent secondRead = mapper.readValue("{ \"two\": \"Hello World\" }", Parent.class);
-            assertNotNull(secondRead);
-            assertTrue(secondRead instanceof Parent.ChildTwo);
-            assertEquals("Hello World", ((Parent.ChildTwo) secondRead).two);
-        } catch (Exception e) {
-            fail("This call should not throw");
-        }
+        final Parent firstRead = mapper.readValue("{ \"one\": \"Hello World\" }", Parent.class);
+        assertNotNull(firstRead);
+        assertTrue(firstRead instanceof Parent.ChildOne);
+        assertEquals("Hello World", ((Parent.ChildOne) firstRead).one);
+        final Parent secondRead = mapper.readValue("{ \"two\": \"Hello World\" }", Parent.class);
+        assertNotNull(secondRead);
+        assertTrue(secondRead instanceof Parent.ChildTwo);
+        assertEquals("Hello World", ((Parent.ChildTwo) secondRead).two);
     }
 }