Can someone help me write these LinkedStackTest in java.

/**

* This file will test the stack operations for the

* LinkedStack. You must provide all tests to verify

* correct operation of your stack.

*/

class LinkedStackTest {

// TODO: Declare some global stack instances to use in your tests.

// You must have multiple stacks, and they must have a variety

// of different data types: Integer, String, Double

@BeforeEach

void setUp() throws Exception {

// TODO: Construct the stacks here and fill your stacks with initial values

}

void testIsEmpty() {

// TODO: Test each stack

}

@Test

void testPush() {

// TODO: Make sure the push operation changes the top of each stack.

}

@Test

void testPop() {

// TODO: Assure correct behavior as all elements are popped off of each stack.

// Also check what happens when an empty stack is popped, using assertThrows.

}

@Test

void testClear() {

// TODO: Assure that stack is emptied as a result of clear command.

}

@Test

void testPeek() {

// TODO: Assure correct results from peek, as well as lack

// of modification to stack. Assure correct response when

// peeking on an empty stack as well.

}

}