software-testing/project_task_sheets/phase_02/project_phase02_tasks/JSONScannerTest.java

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2022-05-04 23:56:21 +02:00
package com.alibaba.fastjson.parser;
import com.alibaba.fastjson.JSONException;
import org.junit.Assert;
import org.junit.Test;
public class JSONScannerTest {
@Test
public void inputTokenTest_Comma() throws Throwable {
JSONScanner scanner = new JSONScanner(",");
scanner.nextToken();
Assert.assertEquals(JSONToken.COMMA, scanner.token());
}
@Test
public void inputTokenTest_String() throws Throwable {
JSONScanner scanner = new JSONScanner("\"text\"");
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_STRING, scanner.token());
Assert.assertEquals("text", scanner.stringVal());
}
@Test
public void inputTokenTest_Integer() throws Throwable {
JSONScanner scanner = new JSONScanner("-352");
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_INT, scanner.token());
Assert.assertEquals(-352, scanner.intValue());
}
@Test
public void inputTokenTest_True() throws Throwable {
JSONScanner scanner = new JSONScanner("true");
scanner.nextToken();
Assert.assertEquals(JSONToken.TRUE, scanner.token());
}
@Test
public void inputTokenTest_False() throws Throwable {
JSONScanner scanner = new JSONScanner("false");
scanner.nextToken();
Assert.assertEquals(JSONToken.FALSE, scanner.token());
}
@Test
public void inputTokenTest_Float() throws Throwable {
JSONScanner scanner = new JSONScanner("2.5e2");
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_FLOAT, scanner.token());
}
@Test
public void inputTokenTest_Null() throws Throwable {
JSONScanner scanner = new JSONScanner("null");
scanner.nextToken();
Assert.assertEquals(JSONToken.NULL, scanner.token());
}
@Test
public void scannerSequenceTest() throws Throwable {
JSONScanner scanner = new JSONScanner("5,:");
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_INT, scanner.token());
Assert.assertEquals(5, scanner.intValue());
scanner.nextToken();
Assert.assertEquals(JSONToken.COMMA, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.COLON, scanner.token());
}
@Test
public void scannerPositionTest() throws Throwable {
JSONScanner scanner = new JSONScanner("5,:");
scanner.nextToken();
Assert.assertEquals(0, scanner.pos());
scanner.nextToken();
Assert.assertEquals(1, scanner.pos());
scanner.nextToken();
Assert.assertEquals(2, scanner.pos());
}
@Test
public void scannerEofTest() throws Throwable {
JSONScanner scanner = new JSONScanner("5,:");
scanner.nextToken();
scanner.nextToken();
scanner.nextToken(); // colon
// scanner should now enter EOF
scanner.nextToken();
Assert.assertTrue(scanner.isEOF());
Assert.assertEquals(JSONToken.EOF, scanner.token());
}
@Test(expected=JSONException.class)
public void scannerInputFormatTest_Invalid() throws Throwable {
JSONScanner scanner = new JSONScanner("53fds"); // invalid literal value
scanner.nextToken(); // consumes numeric token
scanner.nextToken(); // should raise invalid literal
}
@Test()
public void complexExampleTest() throws Throwable {
JSONScanner scanner = new JSONScanner("{\"Name\":\"Michael\",\"Last\":\"Chen\"}");
scanner.nextToken();
Assert.assertEquals(JSONToken.LBRACE, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_STRING, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.COLON, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_STRING, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.COMMA, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_STRING, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.COLON, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.LITERAL_STRING, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.RBRACE, scanner.token());
scanner.nextToken();
Assert.assertEquals(JSONToken.EOF, scanner.token());
}
}