test: made unit tests for Organization

src/test/java/edu/group5/app/model/organization/OrganizationTest.java

@@ -1,4 +1,86 @@
+package edu.group5.app.model.organization;
+
+import org.junit.jupiter.api.Test;
+
 import static org.junit.jupiter.api.Assertions.*;
+
 class OrganizationTest {
 
+  @Test
+  void constructor_ThrowsWhenOrgNumberIsNegative() {
+    assertThrows(IllegalArgumentException.class, () -> {new Organization(
+        -1,
+        "Org",
+        true,
+        null,
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenNameIsNull() {
+    assertThrows(NullPointerException.class, () -> {new Organization(
+        1,
+        null,
+        true,
+        "org.com",
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenNameIsBlank() {
+    assertThrows(IllegalArgumentException.class, () -> {new Organization(
+        1,
+        "",
+        true,
+        "org.com",
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenWebsiteURLIsNull() {
+    assertThrows(NullPointerException.class, () -> {new Organization(
+        1,
+        "Org",
+        true,
+        null,
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenWebsiteURLIsBlank() {
+    assertThrows(IllegalArgumentException.class, () -> {new Organization(
+        1,
+        "Org",
+        true,
+        "",
+        true,
+        "Org description"
+    );
+    });
+  }
+
+  @Test
+  void constructor_ThrowsWhenDescriptionIsNull() {
+    assertThrows(NullPointerException.class, () -> {new Organization(
+        1,
+        "Org",
+        true,
+        "org.com",
+        true,
+        null
+    );
+    });
+  }
 }