// This program tests stage 2 of the LetterInventory class.

import java.util.*;
import java.io.*;

public class Test2 {
    public static final char[] LETTERS = new char[] {'g', 'a', 'h', 'm', 'g', 'b', 'z', 'p', 'z', 'b', 'a', 'h', 'p', 'm', 'G', 'A', 'H', 'M'};
    public static final int[]  COUNTS = new int[]   { 3,   2,   4,   1,   0,   2,   1,   4,   0,   0,   0,   0,   0,   0,   3,   2,   4,   1 };
    public static final int GETS_PER_LINE = 5;
    
    public static void main(String[] args) {
        LetterInventory tester = new LetterInventory("");
        System.out.println("Starting with empty inventory");
        check(tester);
        System.out.println();
        for (int i = 0; i < LETTERS.length; i++) {
            char ch = LETTERS[i];
            int count = COUNTS[i];
            
            System.out.println("setting count for " + ch + " to " + count);
            try {
                tester.set(ch, count);
            } catch(Exception e) {
                System.out.println("failed");
                System.out.println("    threw exception: " + e);
                int line = e.getStackTrace()[0].getLineNumber();
                System.out.println("    in LetterInventory line#" + line);
                System.exit(1);
            }
            check(tester);
            System.out.println();
        }
    }

    // pre :
    // post: prints out the provided LetterInventory's size, toString, and
    // isEmpty() methods
    public static void check(LetterInventory tester) {
        System.out.print(".size()=");
        testSize(tester);
        
        System.out.print(".toString()=");
        testToString(tester);
        
        System.out.print(".isEmpty()=");
        testIsEmpty(tester);
        
        testGet(tester);
        System.out.println();
    }

    // post: prints out result of calling toString() on
    // the provided LetterInventory
    public static void testToString(LetterInventory tester) {
        String test = "";
        try {
            test = tester.toString();
        } catch (Exception e) {
            System.out.println("toString failed");
            System.out.println("    threw exception: " + e);
            int line = e.getStackTrace()[0].getLineNumber();
            System.out.println("    in LetterInventory line#" + line);
            System.exit(1);
        }
        
        System.out.println(test);
    }

    // post: prints out the result of calling
    // the provided LetterInventory's .size() method
    public static void testSize(LetterInventory tester) {
        int test = 0;
        try {
            test = tester.size();
        } catch (Exception e) {
            System.out.println("size failed");
            System.out.println("    threw exception: " + e);
            int line = e.getStackTrace()[0].getLineNumber();
            System.out.println("    in LetterInventory line#" + line);
            System.exit(1);
        }
        System.out.println(test);
    }

    // post: prints out the result of calling the provided LetterInventory's
    // .isEmpty() method
    public static void testIsEmpty(LetterInventory tester) {
        boolean test = false;
        try {
            test = tester.isEmpty();
        } catch (Exception e) {
            System.out.println("isEmpty failed");
            System.out.println("    threw exception: " + e);
            int line = e.getStackTrace()[0].getLineNumber();
            System.out.println("    in LetterInventory line#" + line);
            System.exit(1);
        }
        
        System.out.println(test);
    }

    // post: prints out the result of calling the provided
    // LetterInventory's .get method on every character a-z
    public static void testGet(LetterInventory tester) {
        for (char ch = 'a'; ch <= 'z'; ch++) {
            int test = 0;
            try {
                test = tester.get(ch);
            } catch (Exception e) {
                System.out.println("get failed for '" + ch + "'");
                System.out.println("    threw exception: " + e);
                int line = e.getStackTrace()[0].getLineNumber();
                System.out.println("    in LetterInventory line#" + line);
                System.exit(1);
            }
            
            if ((ch - 'a') % GETS_PER_LINE == 0 && ch != 'a') {
               System.out.println();
            }
            System.out.print(".get('" + ch + "')=" + test + " ");
        }
    }
}