Updated on 2026-08-14

domain/address-book/src/main/kotlin/com/tangem/domain/addressbook/usecase/GetContactsUseCase.kt

@@ -30,7 +30,7 @@ class GetContactsUseCase(
     private fun Contact.matches(query: String): Boolean {
         val isNameContaining = name.value.contains(other = query, ignoreCase = true)
         val isAddressContaining = addresses.any { addressEntry ->
-            addressEntry.address.contains(other = query, ignoreCase = true)
+            addressEntry.address.contains(other = query, ignoreCase = false)
         }
         return isNameContaining || isAddressContaining
     }

domain/address-book/src/test/kotlin/com/tangem/domain/addressbook/usecase/GetContactsUseCaseTest.kt

@@ -53,6 +53,41 @@ class GetContactsUseCaseTest {
         assertThat(result).containsExactly(bob)
     }
 
+    @Test
+    fun `GIVEN address query matching case WHEN invoke THEN returns matching contact`() = runTest {
+        // Arrange
+        val carol = contact(name = "Carol", address = "0xAbCdEf")
+        every { repository.getAllContacts() } returns flowOf(listOf(alice, carol))
+
+        // Act
+        val result = useCase(query = "0xAbCdEf").first()
+
+        // Assert
+        assertThat(result).containsExactly(carol)
+    }
+
+    @Test
+    fun `GIVEN address query with different case WHEN invoke THEN returns empty`() = runTest {
+        // Arrange
+        val carol = contact(name = "Carol", address = "0xAbCdEf")
+        every { repository.getAllContacts() } returns flowOf(listOf(alice, carol))
+
+        // Act
+        val result = useCase(query = "0xabcdef").first()
+
+        // Assert
+        assertThat(result).isEmpty()
+    }
+
+    @Test
+    fun `GIVEN name query with different case WHEN invoke THEN returns matching contact`() = runTest {
+        // Act
+        val result = useCase(query = "ALICE").first()
+
+        // Assert
+        assertThat(result).containsExactly(alice)
+    }
+
     @Test
     fun `GIVEN blank query WHEN invoke THEN returns all contacts unfiltered`() = runTest {
         // Act