黑盒测试（等价类划分+边界值分析+决策表方法）白盒测试（语句覆盖、分支覆盖、条件覆盖、分支/条件覆盖、条件组合覆盖及基本路径测试方法）分析三角形问题-Black box testing (equivalence class boundary value analysis+ by+ decision table method) white box (statement coverage, branch coverage, condition coverage, branch/condition coverage, conditions, and the combination of the basic path coverage test method) of the triangle problem