RFR: JDK-8289949 Improve test coverage for XPath: operators [v2]

[Bill Huang]

> Provided coverage for XPath operators. Operators include:
> * Boolean operators: or, and, =, !=, <, <=, >, >=
> * Number operators: +, -, *, div, mod
> * Union operator: |

Bill Huang has updated the pull request incrementally with one additional commit since the last revision:

  Implemented review comments.

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/10047/files
  - new: https://git.openjdk.org/jdk/pull/10047/files/f593e71d..fb252477

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10047&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10047&range=00-01

  Stats: 9 lines in 1 file changed: 0 ins; 0 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/10047.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10047/head:pull/10047

PR: https://git.openjdk.org/jdk/pull/10047