1 files changed, 23 insertions, 4 deletions
diff --git a/spec/parcom_spec.cr b/spec/parcom_spec.cr
index feea102..25ae2e9 100644
--- a/spec/parcom_spec.cr
+++ b/spec/parcom_spec.cr
@@ -737,10 +737,29 @@ describe "Practical use" do
       arrs.map { |chars| chars.join }
     end
 
-    tokens = Tokens.from_string("test number 1 ")
-    result = tokenizer.parse(tokens)
-    result.value.should eq(["test", "number", "1"])
-    result.tokens.empty?.should be_true
+    good_strings = [
+      "test with no trailing whitespace",
+      "  test with whitespace in the front",
+      "test with whitespace in the back",
+      "  test surrounded by whitespace     ",
+    ]
+
+    good_strings.each do |s|
+      tokens = Tokens.from_string(s)
+      result = tokenizer.parse(tokens)
+      result.value.should eq(s.strip.split(/\s+/))
+      result.tokens.empty?.should be_true
+    end
+
+    bad_strings = [
+      "",
+      "            ",
+    ]
+
+    bad_strings.each do |s|
+      tokens = Tokens.from_string(s)
+      expect_raises(ParserFail) { tokenizer.parse(tokens) }
+    end
   end
 end