1 files changed, 144 insertions, 0 deletions
diff --git a/src/base/intern_string.tests.cc b/src/base/intern_string.tests.cc
new file mode 100644
index 0000000..47dda14
--- /dev/null
+++ b/src/base/intern_string.tests.cc
@@ -0,0 +1,144 @@
+/**
+ * Copyright (c) 2021, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cctype>
+#include <iostream>
+
+#include "intern_string.hh"
+
+#include "config.h"
+#include "doctest/doctest.h"
+
+TEST_CASE("string_fragment::startswith")
+{
+    std::string empty;
+    auto sf = string_fragment{empty};
+
+    CHECK_FALSE(sf.startswith("abc"));
+}
+
+TEST_CASE("split_lines")
+{
+    std::string in1 = "Hello, World!";
+    std::string in2 = "Hello, World!\nGoodbye, World!";
+
+    {
+        auto sf = string_fragment(in1);
+        auto split = sf.split_lines();
+
+        CHECK(1 == split.size());
+        CHECK(in1 == split[0].to_string());
+    }
+
+    {
+        auto sf = string_fragment(in2);
+        auto split = sf.split_lines();
+
+        CHECK(2 == split.size());
+        CHECK("Hello, World!\n" == split[0].to_string());
+        CHECK("Goodbye, World!" == split[1].to_string());
+    }
+}
+
+TEST_CASE("consume")
+{
+    auto is_eq = string_fragment::tag1{'='};
+    auto is_dq = string_fragment::tag1{'"'};
+    auto is_colon = string_fragment::tag1{':'};
+
+    const char* pair = "foo  =  bar";
+    auto sf = string_fragment(pair);
+
+    auto split_sf = sf.split_while(isalnum);
+
+    CHECK(split_sf.has_value());
+    CHECK(split_sf->first.to_string() == "foo");
+    CHECK(split_sf->second.to_string() == "  =  bar");
+
+    auto value_frag = split_sf->second.skip(isspace).consume(is_eq);
+
+    CHECK(value_frag.has_value());
+    CHECK(value_frag->to_string() == "  bar");
+
+    auto stripped_value_frag = value_frag->consume(isspace);
+
+    CHECK(stripped_value_frag.has_value());
+    CHECK(stripped_value_frag->to_string() == "bar");
+
+    auto no_value = sf.consume(is_colon);
+    CHECK(!no_value.has_value());
+
+    const char* qs = R"("foo \" bar")";
+    auto qs_sf = string_fragment{qs};
+
+    auto qs_body = qs_sf.consume(is_dq);
+    string_fragment::quoted_string_body qsb;
+    auto split_body = qs_body->split_while(qsb);
+
+    CHECK(split_body.has_value());
+    CHECK(split_body->first.to_string() == "foo \\\" bar");
+    CHECK(split_body->second.to_string() == "\"");
+
+    auto empty = split_body->second.consume(is_dq);
+
+    CHECK(empty.has_value());
+    CHECK(empty->empty());
+}
+
+TEST_CASE("find_left_boundary")
+{
+    std::string in1 = "Hello,\nWorld!\n";
+
+    {
+        auto sf = string_fragment{in1};
+
+        auto world_sf = sf.find_left_boundary(
+            in1.length() - 3, [](auto ch) { return ch == '\n'; });
+        CHECK(world_sf.to_string() == "World!\n");
+        auto full_sf
+            = sf.find_left_boundary(3, [](auto ch) { return ch == '\n'; });
+        CHECK(full_sf.to_string() == in1);
+    }
+}
+
+TEST_CASE("find_right_boundary")
+{
+    std::string in1 = "Hello,\nWorld!\n";
+
+    {
+        auto sf = string_fragment{in1};
+
+        auto world_sf = sf.find_right_boundary(
+            in1.length() - 3, [](auto ch) { return ch == '\n'; });
+        CHECK(world_sf.to_string() == "Hello,\nWorld!");
+        auto hello_sf
+            = sf.find_right_boundary(3, [](auto ch) { return ch == '\n'; });
+        CHECK(hello_sf.to_string() == "Hello,");
+    }
+}