Branch tests fail

The only test I see checking that is testPasswordReset(), which uses the following code.

    // Create a log in link for the user, and go to that URL.
    // Borrowed from testUserPasswordResetExpired().
    $timestamp = REQUEST_TIME;
    $this->drupalGet("user/reset/{$this->user->uid}/$timestamp/" . user_pass_rehash($this->user->pass, $timestamp, $this->user->login, $this->user->uid));

    $this->assertText(t('Reset password'), "The reset password form is shown.");

    // Use the one-time login link.
    $this->drupalPost(NULL, array(), t('Log in'));

    $this->assertTitle(t('Terms and Conditions | Drupal'), "The user is redirected to the terms and conditions approval page.");
    $this->assertText(t('Terms and Conditions'), "The Terms and Conditions form is shown.");
    // assertText() doesn't handle an '&' properly.
    $this->assertText(t('To continue to use this site please read the Terms & Conditions below'), "The Terms and Conditions form is shown.");

    $edit = array(
      'legal_accept' => TRUE,
    );

    // Accept the T&Cs.
    $this->drupalPost(NULL, $edit, t('Confirm'));

    // Don't use assertUrl() as that requires us to match up the tokens in the
    // query too.
    $url = $this->getUrl();
    $path = parse_url($url, PHP_URL_PATH);
    $expected_path = url("user/{$this->user->uid}/edit");
    $this->assertEqual($path, $expected_path, "The user is redirected to the user edit page.");

    $this->assertText(t("You have just used your one-time login link. It is no longer necessary to use this link to log in. Please change your password."), "The user is shown the message to reset their password.");
  }

What seems wrong is the code for getting the current page path.
I am not sure it's necessary to verify the user sees the form to edit the account. The test already verifies the message shown to users using their one-time login link is present; that should be enough.

To make a comparison, this is the code used from UserPasswordResetTestCase::testUserPasswordResetLoggedIn().

  /**
   * Test user password reset while logged in.
   */
  function testUserPasswordResetLoggedIn() {
    $account = $this->drupalCreateUser();
    $this->drupalLogin($account);
    // Make sure the test account has a valid password.
    user_save($account, array('pass' => user_password()));

    // Generate one time login link.
    $reset_url = user_pass_reset_url($account);
    $this->drupalGet($reset_url);

    $this->assertText('Reset password');
    $this->drupalPost(NULL, NULL, t('Log in'));

    $this->assertText('You have just used your one-time login link. It is no longer necessary to use this link to log in. Please change your password.');

    $pass = user_password();
    $edit = array(
      'pass[pass1]' => $pass,
      'pass[pass2]' => $pass,
    );
    $this->drupalPost(NULL, $edit, t('Save'));

    $this->assertText('The changes have been saved.');
  }

It doesn't check on which page the users are redirect, but only if the You have just used your one-time login link. It is no longer necessary to use this link to log in. Please change your password. message is shown on the page.

Definitively, the test of this module should just verify the message is present, without checking where the users are redirect.

Tests are passing. This is R&TBC.

@Rafal Lukawiecki Good work on finding the cause and fixing it!