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package org.python.core;
import java.math.BigInteger;
import junit.framework.TestCase;
import org.python.core.stringlib.FieldNameIterator;
import org.python.core.stringlib.IntegerFormatter;
import org.python.core.stringlib.InternalFormat;
import org.python.core.stringlib.MarkupIterator;
import org.python.core.stringlib.TextFormatter;
import org.python.core.stringlib.InternalFormat.Spec;
import org.python.util.PythonInterpreter;
/**
* Tests for internal bits and pieces of string.format implementation.
*/
public class StringFormatTest extends TestCase {
/** Exception-raising seems to need the interpreter to be initialised **/
PythonInterpreter interp = new PythonInterpreter();
/** Switches mode in tests that have a shared implementation for bytes and Unicode modes. */
private boolean useBytes = true;
public void testInternalFormatSpec() {
InternalFormat.Spec spec;
spec = InternalFormat.fromText("x");
assertFalse(Spec.specified(spec.align));
assertFalse(Spec.specified(spec.fill));
assertFalse(Spec.specified(spec.width));
assertFalse(Spec.specified(spec.precision));
assertEquals('x', spec.type);
spec = InternalFormat.fromText("<x");
assertEquals('<', spec.align);
assertEquals('x', spec.type);
spec = InternalFormat.fromText("~<x");
assertEquals('~', spec.fill);
assertEquals('<', spec.align);
assertEquals('x', spec.type);
spec = InternalFormat.fromText("+x");
assertEquals('+', spec.sign);
assertEquals('x', spec.type);
spec = InternalFormat.fromText("#x");
assertEquals(true, spec.alternate);
spec = InternalFormat.fromText("0x");
assertEquals('=', spec.align);
assertEquals('0', spec.fill);
spec = InternalFormat.fromText("123x");
assertEquals(123, spec.width);
spec = InternalFormat.fromText("123.456x");
assertEquals(123, spec.width);
assertEquals(456, spec.precision);
assertParseError("123.x", "Format specifier missing precision");
assertParseError("123xx", "Invalid conversion specification");
spec = InternalFormat.fromText("");
assertEquals(Spec.NONE, spec.type);
}
private void assertParseError(String spec, String expected) {
String error = null;
try {
InternalFormat.fromText(spec);
} catch (PyException e) {
assertEquals(Py.ValueError, e.type);
error = e.value.toString();
}
assertEquals(expected, error);
}
/**
* Test the IntegerFormatter returned by {@link PyInteger#prepareFormat}. This is based on the
* original <code>testFormatIntOrLong</code> which tested <code>PyInteger.formatIntOrLong</code>
* .
*/
public void testPrepareFormatter() {
int v = 123;
IntegerFormatter f;
f = PyInteger.prepareFormatter(InternalFormat.fromText("d"));
assertEquals("123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("o"));
assertEquals("173", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("x"));
assertEquals("7b", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("X"));
assertEquals("7B", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("b"));
assertEquals("1111011", f.format(v).pad().getResult());
int v2 = 1234567890;
f = PyInteger.prepareFormatter(InternalFormat.fromText(",d"));
assertEquals("1,234,567,890", f.format(v2).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("#o"));
assertEquals("0o173", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("#X"));
assertEquals("0X7B", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("c"));
assertEquals("{", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("+d"));
assertEquals("+123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText(" d"));
assertEquals(" 123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("5"));
assertEquals(" 123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("^6"));
assertEquals(" 123 ", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("~<5"));
assertEquals("123~~", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("0=+6"));
assertEquals("+00123", f.format(v).pad().getResult());
assertValueError("0=+6.1", "Precision not allowed in integer format specifier");
assertValueError("+c", "Sign not allowed with integer format specifier 'c'");
f = PyInteger.prepareFormatter(InternalFormat.fromText("c"));
f.setBytes(true);
assertOverflowError(256, f, "%c arg not in range(0x100)");
assertOverflowError(-1, f, "%c arg not in range(0x100)");
assertOverflowError(0x110000, f, "%c arg not in range(0x100)");
f = PyInteger.prepareFormatter(InternalFormat.fromText("c"));
assertOverflowError(0x110000, f, "%c arg not in range(0x110000)");
assertOverflowError(-1, f, "%c arg not in range(0x110000)");
}
/**
* Test the IntegerFormatter returned by {@link PyInteger#prepareFormat}. This is based on the
* original <code>testFormatIntOrLong</code> which tested <code>PyInteger.formatIntOrLong</code>
* .
*/
public void testPrepareFormatterLong() {
BigInteger v = BigInteger.valueOf(123);
IntegerFormatter f;
f = PyInteger.prepareFormatter(InternalFormat.fromText("d"));
assertEquals("123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("o"));
assertEquals("173", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("x"));
assertEquals("7b", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("X"));
assertEquals("7B", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("b"));
assertEquals("1111011", f.format(v).pad().getResult());
BigInteger v2 = BigInteger.valueOf(1234567890);
f = PyInteger.prepareFormatter(InternalFormat.fromText(",d"));
assertEquals("1,234,567,890", f.format(v2).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("#o"));
assertEquals("0o173", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("#X"));
assertEquals("0X7B", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("c"));
assertEquals("{", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("+d"));
assertEquals("+123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText(" d"));
assertEquals(" 123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("5"));
assertEquals(" 123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("^6"));
assertEquals(" 123 ", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("~<5"));
assertEquals("123~~", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("0=+6"));
assertEquals("+00123", f.format(v).pad().getResult());
f = PyInteger.prepareFormatter(InternalFormat.fromText("c"));
f.setBytes(true);
assertOverflowError(BigInteger.valueOf(256), f, "%c arg not in range(0x100)");
assertOverflowError(BigInteger.valueOf(-1), f, "%c arg not in range(0x100)");
assertOverflowError(BigInteger.valueOf(0x110000), f, "%c arg not in range(0x100)");
f = PyInteger.prepareFormatter(InternalFormat.fromText("c"));
assertOverflowError(BigInteger.valueOf(0x110000), f, "%c arg not in range(0x110000)");
assertOverflowError(BigInteger.valueOf(-1), f, "%c arg not in range(0x110000)");
}
private void assertValueError(String formatSpec, String expected) {
try {
IntegerFormatter f = PyInteger.prepareFormatter(InternalFormat.fromText(formatSpec));
// f.format(123).pad().getResult();
fail("ValueError not thrown, expected: " + expected);
} catch (PyException pye) {
assertEquals(expected, pye.value.toString());
}
}
private void assertOverflowError(int v, IntegerFormatter f, String expected) {
// Test with Java int for PyInteger
try {
f.format(v).pad().getResult();
fail("OverflowError not thrown, expected: " + expected);
} catch (PyException pye) {
assertEquals(expected, pye.value.toString());
}
}
private void assertOverflowError(BigInteger v, IntegerFormatter f, String expected) {
// Test with BigInteger for PyLong
try {
f.format(v).pad().getResult();
fail("OverflowError not thrown, expected: " + expected);
} catch (PyException pye) {
assertEquals(expected, pye.value.toString());
}
}
public void testFormatString() {
String v = "abc";
TextFormatter f;
f = PyString.prepareFormatter(InternalFormat.fromText(""));
assertEquals("abc", f.format(v).pad().getResult());
String v2 = "abcdef";
f = PyString.prepareFormatter(InternalFormat.fromText(".3"));
assertEquals("abc", f.format(v2).pad().getResult());
f = PyString.prepareFormatter(InternalFormat.fromText("6"));
assertEquals("abc ", f.format(v).pad().getResult());
}
public void implTestMarkupIterator() {
MarkupIterator iterator = newMarkupIterator("abc");
assertEquals("abc", iterator.nextChunk().literalText);
assertNull(iterator.nextChunk());
iterator = newMarkupIterator("First, thou shalt count to {0}");
MarkupIterator.Chunk chunk = iterator.nextChunk();
assertEquals("First, thou shalt count to ", chunk.literalText);
assertEquals("0", chunk.fieldName);
assertNull(iterator.nextChunk());
iterator = newMarkupIterator("Weight in tons {0.weight!r:s}");
chunk = iterator.nextChunk();
assertEquals("Weight in tons ", chunk.literalText);
assertEquals("0.weight", chunk.fieldName);
assertEquals("r", chunk.conversion);
assertEquals("s", chunk.formatSpec);
chunk = newMarkupIterator("{{").nextChunk();
assertEquals("{", chunk.literalText);
chunk = newMarkupIterator("}}").nextChunk();
assertEquals("}", chunk.literalText);
chunk = newMarkupIterator("{{}}").nextChunk();
assertEquals("{}", chunk.literalText);
chunk = newMarkupIterator("{0:.{1}}").nextChunk();
assertEquals("0", chunk.fieldName);
assertEquals(".{1}", chunk.formatSpec);
assertTrue(chunk.formatSpecNeedsExpanding);
assertMarkupError("{!}", "end of format while looking for conversion specifier");
assertMarkupError("{!rrrr}", "expected ':' after conversion specifier");
assertMarkupError("{", "Single '{' encountered in format string");
assertMarkupError("}", "Single '}' encountered in format string");
}
public void testMarkupIteratorBytes() {
useBytes = true;
implTestMarkupIterator();
}
public void testMarkupIteratorUnicode() {
useBytes = false;
implTestMarkupIterator();
}
private MarkupIterator newMarkupIterator(String markup) {
PyString markupObject = useBytes ? Py.newString(markup) : Py.newUnicode(markup);
return new MarkupIterator(markupObject);
}
private void assertMarkupError(String markup, String expected) {
MarkupIterator iterator = newMarkupIterator(markup);
String error = null;
try {
iterator.nextChunk();
} catch (IllegalArgumentException e) {
error = e.getMessage();
}
assertEquals(expected, error);
}
public void implTestFieldNameIterator() {
FieldNameIterator it = newFieldNameIterator("abc");
assertEquals("abc", it.head());
assertNull(it.nextChunk());
it = newFieldNameIterator("3");
assertEquals(3, it.head());
assertNull(it.nextChunk());
it = newFieldNameIterator("abc[0]");
assertEquals("abc", it.head());
FieldNameIterator.Chunk chunk = it.nextChunk();
assertEquals(0, chunk.value);
assertFalse(chunk.is_attr);
assertNull(it.nextChunk());
it = newFieldNameIterator("abc.def");
assertEquals("abc", it.head());
chunk = it.nextChunk();
assertEquals("def", chunk.value);
assertTrue(chunk.is_attr);
assertNull(it.nextChunk());
}
public void testFieldNameIteratorBytes() {
useBytes = true;
implTestFieldNameIterator();
}
public void testFieldNameIteratorUnicode() {
useBytes = false;
implTestFieldNameIterator();
}
private FieldNameIterator newFieldNameIterator(String field) {
PyString fieldObject = useBytes ? Py.newString(field) : Py.newUnicode(field);
return new FieldNameIterator(fieldObject);
}
}
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