transcendental-lisp/test/function/builtin/SYMBOL_FUNCTIONTester.java

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package function.builtin;
import static org.junit.Assert.*;
import static testutil.TestUtilities.evaluateString;
import org.junit.Test;
import function.ArgumentValidator.*;
import function.builtin.SYMBOL_FUNCTION.UndefinedSymbolFunctionException;
import sexpression.Nil;
public class SYMBOL_FUNCTIONTester {
@Test
public void testSymbolFunction_BuiltinFunction() {
String input = "(symbol-function '+)";
assertEquals("#<SYSTEM-FUNCTION +>", evaluateString(input).toString());
}
@Test
public void testSymbolFunction_UserDefinedFunction() {
String defineUserFunction = "(defun y (n m) (+ n m))";
String input = "(symbol-function 'y)";
evaluateString(defineUserFunction);
assertEquals("(Y (N M) (+ N M))", evaluateString(input).toString());
}
@Test(expected = RuntimeException.class)
public void testSymbolFunction_NonFunction() {
String input = "(symbol-function 'a)";
evaluateString(input);
}
@Test(expected = BadArgumentTypeException.class)
public void testSymbolFunctionWithBadArgumentType() {
evaluateString("(symbol-function 2)");
}
@Test(expected = TooManyArgumentsException.class)
public void testSymbolFunctionWithTooManyArguments() {
evaluateString("(symbol-function 'a 'b)");
}
@Test(expected = TooFewArgumentsException.class)
public void testSymbolFunctionWithTooFewArguments() {
evaluateString("(symbol-function)");
}
@Test
public void undefinedSymbolFunctionException_HasMessageText() {
UndefinedSymbolFunctionException e = new UndefinedSymbolFunctionException(Nil.getInstance());
assertNotNull(e.getMessage());
assertTrue(e.getMessage().length() > 0);
}
}