Add tests

nim_org_parse.nimble

@@ -17,6 +17,8 @@ requires "fusion"
 # requires "zero_functional"
 # requires "cascade"
 
-import distros
-if detectOs(NixOS):
-  foreignDep "pkgconfig"
+# Tasks
+
+task tests, "Run all tests":
+  echo "Runnign all tests"
+  exec """testament --backendLogging:off --directory:"./tests/" p "utils/*.nim""""

src/utils/str.nim

@@ -0,0 +1,27 @@
+import std/strutils
+import std/math
+
+proc safeDelete*(str: string, slice: Slice[int]): string =
+  ## Deletes the items `str[slice]`, ignoring elements out of range.
+  if slice.a > str.len - 1:
+    str
+  else:
+    let fromIndex = clamp(slice.a, 0..str.len)
+    let toIndex = clamp(slice.b, 0..str.len - 1)
+
+    var strDup = str
+    strDup.delete(fromIndex..toIndex)
+    strDup
+
+func findAndDelete*(str: string, chars: set[char], start = 0, last = str.len - 1): string =
+  ## Find the next instance of `chars` from `start`.
+  ## When found delete characters until `last`.
+  let startChar = str.find(chars, start, last)
+  if startChar == -1:
+    str
+  else:
+    str.safeDelete(startChar..last)
+
+func deleteAfterNewline*(str: string, start = 0): string =
+  ## Delete string after next Newline from `start`.
+  findAndDelete(str, Newlines, start)

tests/config.nims

@@ -0,0 +1,4 @@
+switch("define", "nimUnittestOutputLevel:PRINT_FAILURES")
+switch("warnings", false)
+switch("hints", false)
+switch("path", "$projectDir/../src")

tests/nim.cfg

@@ -0,0 +1 @@
+--path: "../src/"

tests/utils/test_str.nim

@@ -0,0 +1,22 @@
+import std/unittest
+import utils/str
+
+suite "utils/str":
+  test "safeDelete":
+    let t = "abc"
+    check(t.safeDelete(0..0) == "abc")
+
+    check(t.safeDelete(0..1) == "c")
+    check(t.safeDelete(1..1) == "ac")
+    check(t.safeDelete(2..2) == "ab")
+
+    # Out of bounds slicing
+    check(t.safeDelete(0..10) == "")
+    check(t.safeDelete(10..1) == t)
+    check(t.safeDelete(3..3) == t)
+    check(t.safeDelete(3..(-1)) == t)
+
+  test "findAndDelete":
+    let t = "foo\nbar"
+    check(t.deleteAfterNewline() == "foo")
+    check(t.deleteAfterNewline(start = 4) == t)