diff --git a/src/main/java/it/aboutbits/springboot/testing/valuesource/BlankSource.java b/src/main/java/it/aboutbits/springboot/testing/valuesource/BlankSource.java
new file mode 100644
index 0000000..1ef3be6
--- /dev/null
+++ b/src/main/java/it/aboutbits/springboot/testing/valuesource/BlankSource.java
@@ -0,0 +1,16 @@
+package it.aboutbits.springboot.testing.valuesource;
+
+import org.junit.jupiter.params.provider.ValueSource;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@ValueSource(strings = {"", " ", "         ", "\t", "\r", "\n", "\r\n"})
+public @interface BlankSource {
+}
diff --git a/src/main/java/it/aboutbits/springboot/testing/valuesource/NullAndBlankSource.java b/src/main/java/it/aboutbits/springboot/testing/valuesource/NullAndBlankSource.java
new file mode 100644
index 0000000..7b400f0
--- /dev/null
+++ b/src/main/java/it/aboutbits/springboot/testing/valuesource/NullAndBlankSource.java
@@ -0,0 +1,17 @@
+package it.aboutbits.springboot.testing.valuesource;
+
+import org.junit.jupiter.params.provider.NullSource;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.ANNOTATION_TYPE, ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@NullSource
+@BlankSource
+public @interface NullAndBlankSource {
+}