add selector test

Author: fivesmallq

src/test/java/im/nll/data/extractor/impl/SelectorExtractorTest.java

@@ -59,6 +59,32 @@ public void testExtractHtml() throws Exception {
                 "<th>website</th>", title);
     }
 
+    @Test
+    public void testExtractHtmlEq() throws Exception {
+        selectorExtractor = new SelectorExtractor("tr", 1, "html");
+        String title = selectorExtractor.extract(html);
+        Assert.assertEquals("<th>type</th> \n" +
+                "<th>name</th> \n" +
+                "<th>website</th>", title);
+    }
+
+    @Test
+    public void testExtractTextEq() throws Exception {
+        selectorExtractor = new SelectorExtractor("tr", 1, "text");
+        String title = selectorExtractor.extract(html);
+        Assert.assertEquals("type name website", title);
+        selectorExtractor = new SelectorExtractor("tr", 1);
+        title = selectorExtractor.extract(html);
+        Assert.assertEquals("type name website", title);
+    }
+
+    @Test
+    public void testExtractText() throws Exception {
+        selectorExtractor = new SelectorExtractor("tr:nth-child(2).text");
+        String title = selectorExtractor.extract(html);
+        Assert.assertEquals("type name website", title);
+    }
+
     @Test
     public void testExtractList() throws Exception {
         selectorExtractor = new SelectorExtractor("tr:has(td)");