From 92c8e8757ea50b027c47c41991448ed1a1d93161 Mon Sep 17 00:00:00 2001
From: Ali Dehghani <ali.dehghani.g@gmail.com>
Date: Thu, 25 Apr 2019 18:26:30 +0430
Subject: [PATCH 1/3] Upgrade to JUnit 5.4.2 and Platform 1.4.2.

---
 testing-modules/junit-5/pom.xml | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/testing-modules/junit-5/pom.xml b/testing-modules/junit-5/pom.xml
index a5a1ddaf0b..1d1b0bc574 100644
--- a/testing-modules/junit-5/pom.xml
+++ b/testing-modules/junit-5/pom.xml
@@ -103,13 +103,6 @@
             <plugin>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>${maven-surefire-plugin.version}</version>
-                <dependencies>
-                    <dependency>
-                        <groupId>org.junit.platform</groupId>
-                        <artifactId>junit-platform-surefire-provider</artifactId>
-                        <version>${junit.platform.version}</version>
-                    </dependency>
-                </dependencies>
             </plugin>
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
@@ -130,10 +123,10 @@
     </build>
 
     <properties>
-        <junit.jupiter.version>5.3.1</junit.jupiter.version>
+        <junit.jupiter.version>5.4.2</junit.jupiter.version>
         <mockito.junit.jupiter.version>2.23.0</mockito.junit.jupiter.version>
-        <junit.platform.version>1.2.0</junit.platform.version>
-        <junit.vintage.version>5.2.0</junit.vintage.version>
+        <junit.platform.version>1.4.2</junit.platform.version>
+        <junit.vintage.version>5.4.2</junit.vintage.version>
         <log4j2.version>2.8.2</log4j2.version>
         <h2.version>1.4.196</h2.version>
         <powermock.version>2.0.0-RC.1</powermock.version>

From bee2f9fc57b623088107f13eb88da9465422b2bc Mon Sep 17 00:00:00 2001
From: Ali Dehghani <ali.dehghani.g@gmail.com>
Date: Thu, 25 Apr 2019 18:26:58 +0430
Subject: [PATCH 2/3] Added a simple NullSource test.

---
 .../java/com/baeldung/parameterized/StringsUnitTest.java    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java b/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java
index 7d02a5a74b..96d0d4199a 100644
--- a/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java
+++ b/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java
@@ -86,7 +86,11 @@ class StringsUnitTest {
         assertEquals(expected, actualValue);
     }
 
-
+    @ParameterizedTest
+    @NullSource
+    void isBlank_ShouldReturnTrueForNullInputs(String input) {
+        assertTrue(Strings.isBlank(input));
+    }
 
     private static Stream<Arguments> provideStringsForIsBlank() {
         return Stream.of(

From 97675738f1beb38daa2f43469427851e80ced2e6 Mon Sep 17 00:00:00 2001
From: Ali Dehghani <ali.dehghani.g@gmail.com>
Date: Thu, 25 Apr 2019 19:46:44 +0430
Subject: [PATCH 3/3] Added more tests.

---
 .../parameterized/StringsUnitTest.java        | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java b/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java
index 96d0d4199a..6aea7668f1 100644
--- a/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java
+++ b/testing-modules/junit-5/src/test/java/com/baeldung/parameterized/StringsUnitTest.java
@@ -92,6 +92,25 @@ class StringsUnitTest {
         assertTrue(Strings.isBlank(input));
     }
 
+    @ParameterizedTest
+    @EmptySource
+    void isBlank_ShouldReturnTrueForEmptyStrings(String input) {
+        assertTrue(Strings.isBlank(input));
+    }
+
+    @ParameterizedTest
+    @NullAndEmptySource
+    void isBlank_ShouldReturnTrueForNullAndEmptyStrings(String input) {
+        assertTrue(Strings.isBlank(input));
+    }
+
+    @ParameterizedTest
+    @NullAndEmptySource
+    @ValueSource(strings = {"  ", "\t", "\n"})
+    void isBlank_ShouldReturnTrueForAllTypesOfBlankStrings(String input) {
+        assertTrue(Strings.isBlank(input));
+    }
+
     private static Stream<Arguments> provideStringsForIsBlank() {
         return Stream.of(
                 Arguments.of(null, true), // null strings should be considered blank