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package bjc.everge;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import static org.junit.Assert.*;
/**
* Utility methods for testing.
*
* @author Ben Culkin
*/
public class TestUtils {
/**
* Assert that a ReplParseException is thrown with a given message.
*
* @param msg
* The message.
* @param fle
* The file to load input from.
*/
public static void assertThrownMessage(String msg, String fle) {
assertThrownMessage(false, msg, fle);
}
/**
* Assert that a ReplParseException is thrown with a given message.
*
* @param logMsg
* Log the exception message.
* @param msg
* The message.
* @param fle
* The file to load input from.
*/
public static void assertThrownMessage(boolean logMsg, String msg, String fle) {
try (FileInputStream fis = new FileInputStream(fle); Scanner scn = new Scanner(fis)) {
ReplPair.readList(new ArrayList<>(), scn);
assertTrue(false);
} catch (ReplParseException rpex) {
if (logMsg) System.err.println(rpex.toPrintString());
assertEquals(msg, rpex.toPrintString());
} catch (Exception ex) {
System.err.println("EXCEPTION");
ex.printStackTrace();
assertTrue(false);
return;
}
}
public static void assertMultiReplace(String fle, String... inps) {
assertMultiReplace(false, fle, inps);
}
public static void assertMultiReplace(boolean logRep, String fle, String... inps) {
if (inps.length < 2) throw new IllegalArgumentException("ERROR: Must provide at least two strings to assertMultiReplace");
if (inps.length % 2 != 0) throw new IllegalArgumentException("ERROR: Odd number of strings passed to assertMultiReplace");
List<ReplPair> lrp = null;
try (FileInputStream fis = new FileInputStream(fle); Scanner scn = new Scanner(fis)) {
lrp = ReplPair.readList(scn);
} catch (ReplParseException rpex) {
System.err.println(rpex.toPrintString());
assertTrue(false);
} catch (Exception ex) {
System.err.println("EXCEPTION");
ex.printStackTrace();
assertTrue(false);
return;
}
for (int i = 0; i < inps.length; i += 2) {
String right = inps[i];
String inp = inps[i + 1];
assertReplacesTo(logRep, right, lrp, inp);
}
}
public static void assertReplacesFrom(String right, String inp, String fle) {
assertMultiReplace(fle, right, inp);
}
public static void assertReplacesTo(String right, List<ReplPair> rps, String inp) {
assertReplacesTo(false, right, rps, inp);
}
public static void assertReplacesTo(boolean logRep, String right, List<ReplPair> rps, String inp) {
if (logRep) System.err.printf("\t[LOG] Checking '%s' -> '%s'\n", inp, right);
String tmp = inp;
for (ReplPair rp : rps) {
String oldTmp = tmp;
tmp = rp.apply(tmp);
if (logRep) System.err.printf("\t[LOG] '%s' -> '%s'\t%s\n", oldTmp, tmp, rp);
}
assertEquals(right, tmp);
}
}
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