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package firrtlTests
import firrtl._
import firrtl.ir._
import firrtl.Utils
import org.scalatest.matchers.should.Matchers._
import org.scalatest.flatspec.AnyFlatSpec
class UtilsSpec extends AnyFlatSpec {
behavior of "Utils.expandPrefix"
val expandPrefixTests = List(
("return a name without prefixes", "_", "foo", Set("foo")),
("expand a name ending with prefixes", "_", "foo__", Set("foo__")),
("expand a name with on prefix", "_", "foo_bar", Set("foo_bar", "foo_")),
("expand a name with complex prefixes", "_",
"foo__$ba9_9X__$$$$$_", Set("foo__$ba9_9X__$$$$$_", "foo__$ba9_9X__", "foo__$ba9_", "foo__")),
("expand a name starting with a delimiter", "_", "__foo_bar", Set("__", "__foo_", "__foo_bar")),
("expand a name with a $ delimiter", "$", "foo$bar$$$baz", Set("foo$", "foo$bar$$$", "foo$bar$$$baz")),
("expand a name with a multi-character delimiter", "FOO", "fooFOOFOOFOObar", Set("fooFOOFOOFOO", "fooFOOFOOFOObar"))
)
for ((description, delimiter, in, out) <- expandPrefixTests) {
it should description in { Utils.expandPrefixes(in, delimiter).toSet should be (out)}
}
"expandRef" should "return intermediate expressions" in {
val bTpe = VectorType(Utils.BoolType, 2)
val topTpe = BundleType(Seq(Field("a", Default, Utils.BoolType), Field("b", Default, bTpe)))
val wr = WRef("out", topTpe, PortKind, SourceFlow)
val expected = Seq(
wr,
WSubField(wr, "a", Utils.BoolType, SourceFlow),
WSubField(wr, "b", bTpe, SourceFlow),
WSubIndex(WSubField(wr, "b", bTpe, SourceFlow), 0, Utils.BoolType, SourceFlow),
WSubIndex(WSubField(wr, "b", bTpe, SourceFlow), 1, Utils.BoolType, SourceFlow)
)
(Utils.expandRef(wr)) should be (expected)
}
}
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