65 lines
1.5 KiB
Java
65 lines
1.5 KiB
Java
package table;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertFalse;
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import static org.junit.Assert.assertTrue;
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import static sexpression.Nil.NIL;
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import static sexpression.Symbol.T;
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import org.junit.Before;
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import org.junit.Test;
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public class SymbolTableTest {
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private SymbolTable symbolTable;
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@Before
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public void setUp() {
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symbolTable = new SymbolTable();
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}
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@Test
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public void lookupSymbolNotInTable() {
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assertFalse(symbolTable.contains("symbol"));
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}
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@Test
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public void lookupSymbolInTable() {
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symbolTable.put("symbol", T);
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assertTrue(symbolTable.contains("symbol"));
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}
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@Test
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public void retrieveSymbolValue() {
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symbolTable.put("symbol", T);
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assertEquals(T, symbolTable.get("symbol"));
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}
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@Test
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public void redefineSymbolValue() {
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symbolTable.put("symbol", T);
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symbolTable.put("symbol", NIL);
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assertEquals(NIL, symbolTable.get("symbol"));
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}
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@Test
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public void checkParentTableIsCorrect() {
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SymbolTable childTable = new SymbolTable(symbolTable);
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assertEquals(symbolTable, childTable.getParent());
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}
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@Test
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public void lookupSymbolInParentTable() {
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symbolTable.put("symbol", T);
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SymbolTable childTable = new SymbolTable(symbolTable);
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SymbolTable parentTable = childTable.getParent();
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assertEquals(T, parentTable.get("symbol"));
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}
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}
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