Finished exercise - #5

bin/.gitignore

@@ -0,0 +1,2 @@
+/Spreadsheet.class
+/SpreadsheetTest.class

src/Spreadsheet.java

@@ -1,18 +1,53 @@
+import java.util.HashMap;
+import java.util.Map;
 
 public class Spreadsheet {
+
+	private Map<String, String> spriteSheet = new HashMap<String, String>();
 
 	public String get(String cell) {
-		// to be implemented
-		return null;
+		String cellValue = spriteSheet.get(cell);
+
+		return cellValue;
 	}
 
 	public void set(String cell, String value) {
-		// to be implemented
+		spriteSheet.put(cell, value);
 	}
 
 	public String evaluate(String cell) {
-		// to be implemented
-		return null;
+
+		String cellValue = get(cell);
+		String returnValue;
+		char first = cellValue.charAt(0);
+		char last = cellValue.charAt(cellValue.length() -1);
+
+		if(isNumeric(cellValue) == true){
+			returnValue = cellValue;
+		}else if(isString(first, last) == true){
+			returnValue = cellValue.substring(1, cellValue.length()-1);
+		}else{
+			returnValue = "#Error";
+		}
+
+		return returnValue;
+	}
+
+	public boolean isNumeric(String s){
+
+		if(s.matches("-?\\d+(\\.\\d+)?")){
+			return true;
+		}else{
+			return false;
+		}
 	}
 
-}
+	public boolean isString(char a, char b){
+
+		if(a == '�' && b == '�'){
+			return true;
+		}else{
+			return false;
+		}
+	}
+}

tests/SpreadsheetTest.java

@@ -7,9 +7,41 @@
 public class SpreadsheetTest {
 
 	@Test
-	public void test() {
-		fail("Not yet implemented");
-
+	public void testCreate() {
+		Spreadsheet sp = new Spreadsheet();
+		assertNotNull(sp);
 	}
-
+
+	@Test
+	public void testGet() {
+		Spreadsheet sp = new Spreadsheet();
+		sp.set("A1", "5");
+		String cv = sp.get("A1");
+		assertEquals("5", cv);
+	}
+
+	@Test
+	public void testEvaluate_integer() {
+		Spreadsheet sp = new Spreadsheet();
+		sp.set("A1", "1");
+		String cv = sp.evaluate("A1");
+		assertEquals("1", cv);
+	}
+
+	@Test
+	public void testEvaluate_quoted_string() {
+		Spreadsheet sp = new Spreadsheet();
+		sp.set("A1", "�abc�");
+		String cv = sp.evaluate("A1");
+		assertEquals("abc", cv);
+	}
+
+	@Test
+	public void testEvaluate_incorrect_value() {
+		Spreadsheet sp = new Spreadsheet();
+		sp.set("A1", "�abc1");
+		String cv = sp.evaluate("A1");
+		assertEquals("#Error", cv);
+	}
+
 }