From de7b3dd8c5abcf7cb75100ef590e252647ba0f12 Mon Sep 17 00:00:00 2001
From: Moritz Bunkus <moritz@bunkus.org>
Date: Thu, 20 Aug 2020 21:21:39 +0200
Subject: [PATCH] string splitting by regex: add test case

---
 tests/unit/common/strings_editing.cpp | 93 +++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)

diff --git a/tests/unit/common/strings_editing.cpp b/tests/unit/common/strings_editing.cpp
index 0396db590..3207832d3 100644
--- a/tests/unit/common/strings_editing.cpp
+++ b/tests/unit/common/strings_editing.cpp
@@ -88,4 +88,97 @@ TEST(StringsEditing, SplittingByStringPatternAtEnd) {
   EXPECT_EQ(""s,           r[3]);
 }
 
+TEST(StringsEditing, SplittingRegexByStringEmptyPattern) {
+  auto r = mtx::string::split("This, and that, is stuff."s, std::regex{""s});
+
+  ASSERT_EQ(27,  r.size());
+  EXPECT_EQ("",  r[0]);
+  EXPECT_EQ("T", r[1]);
+  EXPECT_EQ("h", r[2]);
+  EXPECT_EQ("i", r[3]);
+  EXPECT_EQ("s", r[4]);
+  EXPECT_EQ(",", r[5]);
+  EXPECT_EQ(" ", r[6]);
+  EXPECT_EQ("a", r[7]);
+  EXPECT_EQ("n", r[8]);
+  EXPECT_EQ("d", r[9]);
+  EXPECT_EQ(" ", r[10]);
+  EXPECT_EQ("t", r[11]);
+  EXPECT_EQ("h", r[12]);
+  EXPECT_EQ("a", r[13]);
+  EXPECT_EQ("t", r[14]);
+  EXPECT_EQ(",", r[15]);
+  EXPECT_EQ(" ", r[16]);
+  EXPECT_EQ("i", r[17]);
+  EXPECT_EQ("s", r[18]);
+  EXPECT_EQ(" ", r[19]);
+  EXPECT_EQ("s", r[20]);
+  EXPECT_EQ("t", r[21]);
+  EXPECT_EQ("u", r[22]);
+  EXPECT_EQ("f", r[23]);
+  EXPECT_EQ("f", r[24]);
+  EXPECT_EQ(".", r[25]);
+  EXPECT_EQ("",  r[26]);
+}
+
+TEST(StringsEditing, SplittingRegexByStringEmptyText) {
+  auto r = mtx::string::split(""s, std::regex{","s});
+
+  ASSERT_EQ(1,   r.size());
+  EXPECT_EQ(""s, r[0]);
+}
+
+TEST(StringsEditing, SplittingRegexByStringOneCharPattern) {
+  auto r = mtx::string::split("This, and that, is stuff."s, std::regex{","s});
+
+  ASSERT_EQ(3,             r.size());
+  EXPECT_EQ("This"s,       r[0]);
+  EXPECT_EQ(" and that"s,  r[1]);
+  EXPECT_EQ(" is stuff."s, r[2]);
+}
+
+TEST(StringsEditing, SplittingRegexByStringTwoCharsPattern) {
+  auto r = mtx::string::split("This,  and that,    is stuff."s, std::regex{", *"s});
+
+  ASSERT_EQ(3,            r.size());
+  EXPECT_EQ("This"s,      r[0]);
+  EXPECT_EQ("and that"s,  r[1]);
+  EXPECT_EQ("is stuff."s, r[2]);
+}
+
+TEST(StringsEditing, SplittingRegexByStringLimit2) {
+  auto r = mtx::string::split("This,  and that,   is stuff."s, std::regex{", *"s}, 2);
+
+  ASSERT_EQ(2,                        r.size());
+  EXPECT_EQ("This"s,                  r[0]);
+  EXPECT_EQ("and that,   is stuff."s, r[1]);
+}
+
+TEST(StringsEditing, SplittingRegexByStringLimit1) {
+  auto r = mtx::string::split("This,  and that,   is stuff."s, std::regex{", *"s}, 1);
+
+  ASSERT_EQ(1,                               r.size());
+  EXPECT_EQ("This,  and that,   is stuff."s, r[0]);
+}
+
+TEST(StringsEditing, SplittingRegexByStringPatternAtStart) {
+  auto r = mtx::string::split(",This, and that, is stuff."s, std::regex{", *"s});
+
+  ASSERT_EQ(4,            r.size());
+  EXPECT_EQ(""s,          r[0]);
+  EXPECT_EQ("This"s,      r[1]);
+  EXPECT_EQ("and that"s,  r[2]);
+  EXPECT_EQ("is stuff."s, r[3]);
+}
+
+TEST(StringsEditing, SplittingRegexByStringPatternAtEnd) {
+  auto r = mtx::string::split("This, and that, is stuff.,"s, std::regex{", *"s});
+
+  ASSERT_EQ(4,            r.size());
+  EXPECT_EQ("This"s,      r[0]);
+  EXPECT_EQ("and that"s,  r[1]);
+  EXPECT_EQ("is stuff."s, r[2]);
+  EXPECT_EQ(""s,          r[3]);
+}
+
 }