From c0c8a2e49d395b574c7a31727c06f315139d7336 Mon Sep 17 00:00:00 2001
From: Asko Nomm <asko@bien.ee>
Date: Thu, 7 Apr 2022 11:08:32 +0200
Subject: Add tests for italic text, and support using `*` for italic text
 creation as well (re #5)

---
 src/clarktown/parsers/italic.clj       |  4 ++--
 test/clarktown/parsers/italic_test.clj | 17 +++++++++++++++++
 2 files changed, 19 insertions(+), 2 deletions(-)
 create mode 100644 test/clarktown/parsers/italic_test.clj

diff --git a/src/clarktown/parsers/italic.clj b/src/clarktown/parsers/italic.clj
index 5dfe46e..5f63620 100644
--- a/src/clarktown/parsers/italic.clj
+++ b/src/clarktown/parsers/italic.clj
@@ -7,11 +7,11 @@
   "Renders all occurring italic text as italic."
   [block _]
   (loop [block block
-         matches (-> (re-seq #"_.*?_" block)
+         matches (-> (re-seq #"(\*{1}|\_{1})(.*?)(\*{1}|\_{1})" block)
                      distinct)]
     (if (empty? matches)
       block
-      (let [match (first matches)
+      (let [match (ffirst matches)
             value (subs match 1 (- (count match) 1))
             replacement (str "<em>" value "</em>")]
         (recur (string/replace block match replacement)
diff --git a/test/clarktown/parsers/italic_test.clj b/test/clarktown/parsers/italic_test.clj
new file mode 100644
index 0000000..373a945
--- /dev/null
+++ b/test/clarktown/parsers/italic_test.clj
@@ -0,0 +1,17 @@
+(ns clarktown.parsers.italic-test
+  (:require [clojure.test :refer [deftest testing is]]
+            [clarktown.parsers.italic :as italic]))
+
+
+(deftest italic-test
+  (testing "Creating italic text with one surrounding asterisk character"
+    (is (= "<em>This is italic.</em>"
+           (italic/render "*This is italic.*" nil))))
+
+  (testing "Creating italic text with one surrounding underscore character"
+    (is (= "<em>This is italic.</em>"
+           (italic/render "_This is italic._" nil))))
+
+  (testing "Creating italic text with both underscores and asterisks mixed"
+    (is (= "Hi, my name is <em>John</em>, what is <em>your name?</em>"
+           (italic/render "Hi, my name is *John*, what is _your name?_" nil)))))
\ No newline at end of file
-- 
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