Method historyCache

src/test/java/org/htmlunit/HistoryTest.java:88–123

Tests going in history History#back() with POST request. @throws Exception if an error occurs

()

     * @throws Exception if an error occurs
     */
    @Test
    @Alerts("49")
    // limit varies for IE
    public void historyCache() throws Exception {
        final Map<String, Class<? extends Servlet>> servlets = new HashMap<>();
        final int testDeep = 70;

        for (int i = 0; i < testDeep; i++) {
            servlets.put("/post" + i, Post1Servlet.class);
        }
        startWebServer("./", servlets);

        final WebDriver driver = getWebDriver();

        int count = Post1Servlet.Count_;
        for (int i = 0; i < testDeep; i++) {
            driver.get(URL_FIRST + "post" + i);
            assertTrue(driver.getPageSource(), driver.getPageSource().contains("Call: " + (i + count)));
        }

        count = Post1Servlet.Count_;
        for (int i = 0; i < testDeep - 1; i++) {
            driver.navigate().back();
            if (!driver.getPageSource().contains("Call: " + (count - i - 2))) {
                assertEquals(Integer.parseInt(getExpectedAlerts()[0]), i);
                return;
            }

            if (count != Post1Servlet.Count_) {
                Assertions.fail("Server called for " + i);
                break;
            }
        }

        assertEquals(getExpectedAlerts()[0], "done");
    }

    /**
     * Servlet for '/post1'.