Add tests for SPLIT.

Author: python-processing-unit

tests/cases/failing/split-arity-three.pre

@@ -0,0 +1 @@
+SPLIT("a,b", ",", ",")

tests/cases/failing/split-arity-zero.pre

@@ -0,0 +1 @@
+SPLIT()

tests/cases/failing/split-empty-delimiter.pre

@@ -0,0 +1 @@
+SPLIT("a,b", "")

tests/cases/failing/split-first-non-str.pre

@@ -0,0 +1 @@
+SPLIT(0d1, ",")

tests/cases/failing/split-second-non-str.pre

@@ -0,0 +1 @@
+SPLIT("a,b", 0d1)

tests/cases/passing/split-consecutive-and-trailing.pre

@@ -0,0 +1,2 @@
+ASSERT(EQ(SPLIT("a,,b,,,c", ","), ["a", "", "b", "", "", "c"]))
+ASSERT(EQ(SPLIT("tail,,", ","), ["tail", "", ""]))

tests/cases/passing/split-custom-delimiter.pre

@@ -0,0 +1,2 @@
+ASSERT(EQ(SPLIT("ab--cd--ef", "--"), ["ab", "cd", "ef"]))
+ASSERT(EQ(SPLIT("no delimiter here", "--"), ["no delimiter here"]))

tests/cases/passing/split-default-delimiter.pre

@@ -0,0 +1,5 @@
+TNS: words = SPLIT("foo bar baz")
+
+ASSERT(EQ(TYPE(words), "TNS"))
+ASSERT(EQ(words, ["foo", "bar", "baz"]))
+ASSERT(EQ(TLEN(words, 0d1), 0d3))

tests/cases/passing/split-return-element-type.pre

@@ -0,0 +1,4 @@
+TNS: parts = SPLIT("left|right", "|")
+
+ASSERT(EQ(TYPE(parts[0d1]), "STR"))
+ASSERT(EQ(TYPE(parts[0d2]), "STR"))