javax.xml.xpath.XPath#evaluateExpression ( )源码实例Demo

@Test(dataProvider = "document")
public void test05(XPath xpath, Document doc) throws XPathExpressionException {
    double result1 = xpath.evaluateExpression("count(/Customers/Customer)", doc, Double.class);
    assertTrue(result1 == 3.0);
    int result2 = xpath.evaluateExpression("count(/Customers/Customer)", doc, Integer.class);
    assertTrue(result2 == 3);
    long result3 = xpath.evaluateExpression("count(/Customers/Customer)", doc, Long.class);
    assertTrue(result3 == 3);
}
 

@Test(dataProvider = "document")
public void test08(XPath xpath, Document doc) throws XPathExpressionException {
    XPathNodes nodes = xpath.evaluateExpression("/Customers/Customer", doc, XPathNodes.class);
    assertTrue(nodes.size() == 3);
    for (Node n : nodes) {
        assertEquals(n.getLocalName(), "Customer");
    }
}
 

@Test(dataProvider = "xpath", expectedExceptions = NullPointerException.class)
public void test01(XPath xpath) throws XPathExpressionException {
    double result = xpath.evaluateExpression(null, (Object) null, Double.class);
}
 

@Test(dataProvider = "xpath", expectedExceptions = NullPointerException.class)
public void test02(XPath xpath) throws XPathExpressionException {
    double result = xpath.evaluateExpression("1+1", (Object) null, null);
}
 

@Test(dataProvider = "xpath")
public void test03(XPath xpath) throws XPathExpressionException {
    int result = xpath.evaluateExpression("1+1", (Object) null, Integer.class);
    assertTrue(result == 2);
}
 

@Test(dataProvider = "document")
public void test04(XPath xpath, Document doc) throws XPathExpressionException {
    boolean result1 = xpath.evaluateExpression("boolean(/Customers/Customer[@id=3])", doc, Boolean.class);
    assertTrue(result1);
}
 

@Test(dataProvider = "invalidNumericTypes", expectedExceptions = IllegalArgumentException.class)
public void test06(XPath xpath, Class<Number> type) throws XPathExpressionException {
    xpath.evaluateExpression("1+1", (Object) null, type);
}
 

@Test(dataProvider = "document")
public void test07(XPath xpath, Document doc) throws XPathExpressionException {
    String result1 = xpath.evaluateExpression("string(/Customers/Customer[@id=3]/Phone/text())", doc, String.class);
    assertTrue(result1.equals("3333333333"));
}
 

@Test(dataProvider = "document")
public void test09(XPath xpath, Document doc) throws XPathExpressionException {
    Node n = xpath.evaluateExpression("/Customers/Customer[@id=3]", doc, Node.class);
    assertEquals(n.getLocalName(), "Customer");
}
 

@Test(dataProvider = "document", expectedExceptions = IllegalArgumentException.class)
public void test10(XPath xpath, Document doc) throws XPathExpressionException {
    File n = xpath.evaluateExpression("/Customers/Customer[@id=3]", doc, File.class);
}
 

@Test(dataProvider = "document")
public void test11(XPath xpath, Document doc) throws XPathExpressionException {
    XPathEvaluationResult<?> result = xpath.evaluateExpression("boolean(/Customers/Customer[@id=3])", doc);
    verifyResult(result, true);
}
 

@Test(dataProvider = "document")
public void test12(XPath xpath, Document doc) throws XPathExpressionException {
    XPathEvaluationResult<?> result = xpath.evaluateExpression("count(/Customers/Customer)", doc);
    verifyResult(result, 3.0);
}
 

@Test(dataProvider = "document")
public void test13(XPath xpath, Document doc) throws XPathExpressionException {
    XPathEvaluationResult<?> result = xpath.evaluateExpression(
            "string(/Customers/Customer[@id=3]/Phone/text())", doc, XPathEvaluationResult.class);
    verifyResult(result, "3333333333");
}
 

@Test(dataProvider = "document")
public void test14(XPath xpath, Document doc) throws XPathExpressionException {
    XPathEvaluationResult<?> result = xpath.evaluateExpression("/Customers/Customer", doc);
    verifyResult(result, "Customer");
}
 

@Test(dataProvider = "document")
public void test15(XPath xpath, Document doc) throws XPathExpressionException {
    XPathEvaluationResult<?> result = xpath.evaluateExpression("/Customers/Customer[@id=3]", doc);
    verifyResult(result, "Customer");
}
 

@Test(dataProvider = "noContextDependency")
public void testNoContextDependency2(String expression, Object item) throws XPathExpressionException {
    XPath xPath = XPathFactory.newInstance().newXPath();
    xPath.evaluateExpression(expression, item, String.class);
}
 

@Test(dataProvider = "hasContextDependency", expectedExceptions = XPathExpressionException.class)
public void testHasContextDependency2(String expression, Object item) throws XPathExpressionException {
    XPath xPath = XPathFactory.newInstance().newXPath();
    xPath.evaluateExpression(expression, item, String.class);
}