| # Tests of Skylark 'bool' |
| |
| load("assert.sky", "assert") |
| |
| # truth |
| assert.true(True) |
| assert.true(not False) |
| |
| # bool conversion |
| assert.eq([bool(), bool(1), bool(0), bool("hello"), bool("")], |
| [False, True, False, True, False]) |
| |
| # comparison |
| assert.true(None == None) |
| assert.true(None != False) |
| assert.true(None != True) |
| assert.eq(1==1, True) |
| assert.eq(1==2, False) |
| assert.true(False == False) |
| assert.true(True == True) |
| |
| # ordered comparison |
| assert.true(False < True) |
| assert.true(False <= True) |
| assert.true(False <= False) |
| assert.true(True > False) |
| assert.true(True >= False) |
| assert.true(True >= True) |
| |
| # conditional expression |
| assert.eq(1 if 3 > 2 else 0, 1) |
| assert.eq(1 if "foo" else 0, 1) |
| assert.eq(1 if "" else 0, 0) |
| |
| # short-circuit evaluation of 'and' and 'or': |
| # 'or' yields the first true operand, or the last if all are false. |
| assert.eq(0 or "" or [] or 0, 0) |
| assert.eq(0 or "" or [] or 123 or 1/0, 123) |
| assert.fails(lambda: 0 or "" or [] or 0 or 1/0, "division by zero") |
| # 'and' yields the first false operand, or the last if all are true. |
| assert.eq(1 and "a" and [1] and 123, 123) |
| assert.eq(1 and "a" and [1] and 0 and 1/0, 0) |
| assert.fails(lambda: 1 and "a" and [1] and 123 and 1/0, "division by zero") |
