public void EnvironmentVars_IsVariable() { // Actual environment vairabl;es Assert.IsTrue(EnvironmentVars.IsVariable("path")); Assert.IsTrue(EnvironmentVars.IsVariable("temp")); Assert.IsTrue(EnvironmentVars.IsVariable("tmp")); // Handle LillTek built-in variables. Assert.IsTrue(EnvironmentVars.IsVariable("os")); Assert.IsTrue(EnvironmentVars.IsVariable("appversion")); }