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| author | Zhong Sheng <shengzhong@sohu-inc.com> | 2015-06-18 10:43:18 +0800 |
|---|---|---|
| committer | Zhong Sheng <shengzhong@sohu-inc.com> | 2015-06-18 10:43:18 +0800 |
| commit | 5ab401084141d37c03dc29c9028917b92e56ca68 (patch) | |
| tree | 12e888c80aae0b8f28e7d5b4b12533d0991ceaff | |
| parent | b8a4a97a6bb6c2946fa51e630551747b03874d1a (diff) | |
| download | scala-5ab401084141d37c03dc29c9028917b92e56ca68.tar.gz scala-5ab401084141d37c03dc29c9028917b92e56ca68.tar.bz2 scala-5ab401084141d37c03dc29c9028917b92e56ca68.zip | |
make BigDecimalTest.testMathContext a bit easier to understand
| -rw-r--r-- | test/junit/scala/math/BigDecimalTest.scala | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/test/junit/scala/math/BigDecimalTest.scala b/test/junit/scala/math/BigDecimalTest.scala index a801204cb2..a9e2481f37 100644 --- a/test/junit/scala/math/BigDecimalTest.scala +++ b/test/junit/scala/math/BigDecimalTest.scala @@ -233,27 +233,28 @@ class BigDecimalTest { @Test def testMathContext() { def testPrecision() { - val e = 1000 + val p = 1000 + val n = BigDecimal("1.1", MC.UNLIMITED).pow(p) - val n = BigDecimal("1.1", MC.UNLIMITED).pow(e) - assert(BigDecimal(1.1d, MC.UNLIMITED).pow(e) == n) - assert(BigDecimal.decimal(1.1d, MC.UNLIMITED).pow(e) == n) - assert(BigDecimal.decimal(1.1f, MC.UNLIMITED).pow(e) == n) - assert(BigDecimal.decimal(new BD("1.1"), MC.UNLIMITED).pow(e) == n) + // BigDecimal(x: Float, mc: MC), which may not do what you want, is deprecated + assert(BigDecimal(1.1f, MC.UNLIMITED).pow(p) == BigDecimal(java.lang.Double.toString(1.1f.toDouble), MC.UNLIMITED).pow(p)) + assert(BigDecimal(1.1d, MC.UNLIMITED).pow(p) == n) + assert(BigDecimal(new BD("1.1"), MC.UNLIMITED).pow(p) == n) - val m = BigDecimal(java.lang.Double.toString(1.1f.toDouble), MC.UNLIMITED).pow(e) - assert(BigDecimal(1.1f, MC.UNLIMITED).pow(e) == m) // deprecated + assert(BigDecimal.decimal(1.1f, MC.UNLIMITED).pow(p) == n) + assert(BigDecimal.decimal(1.1d, MC.UNLIMITED).pow(p) == n) + assert(BigDecimal.decimal(new BD("1.1"), MC.UNLIMITED).pow(p) == n) - val l = BigDecimal("11", MC.UNLIMITED).pow(e) - assert(BigDecimal(11, MC.UNLIMITED).pow(e) == l) - assert(BigDecimal.decimal(11, MC.UNLIMITED).pow(e) == l) + assert((BigDecimal(11, MC.UNLIMITED) / 10).pow(p) == n) + assert((BigDecimal.decimal(11, MC.UNLIMITED) / 10).pow(p) == n) } def testRounded() { + // the default rounding mode is HALF_UP + assert((BigDecimal(1.23f, new MC(3)) + BigDecimal("0.005")).rounded == BigDecimal("1.24")) // deprecated api assert((BigDecimal(1.23d, new MC(3)) + BigDecimal("0.005")).rounded == BigDecimal("1.24")) - assert((BigDecimal(1.23f, new MC(3)) + BigDecimal("0.005")).rounded == BigDecimal("1.24")) // deprecated - assert((BigDecimal.decimal(1.23d, new MC(3)) + BigDecimal("0.005")).rounded == BigDecimal("1.24")) assert((BigDecimal.decimal(1.23f, new MC(3)) + BigDecimal("0.005")).rounded == BigDecimal("1.24")) + assert((BigDecimal.decimal(1.23d, new MC(3)) + BigDecimal("0.005")).rounded == BigDecimal("1.24")) } testPrecision() |