diff --git a/src/to_string.test.cpp b/src/to_string.test.cpp
index 8efb0ad..4a22a4d 100644
--- a/src/to_string.test.cpp
+++ b/src/to_string.test.cpp
@@ -5,7 +5,7 @@
 using aare::StringTo;
 using aare::ToString;
 
-TEST_CASE("Enum to string conversion") {
+TEST_CASE("Detector Type to string conversion") {
     // TODO! By the way I don't think the enum string conversions should be in
     // the defs.hpp file but let's use this to show a test
     REQUIRE(ToString(aare::DetectorType::Generic) == "Generic");
@@ -23,7 +23,7 @@ TEST_CASE("Enum to string conversion") {
     REQUIRE(ToString(aare::DetectorType::Unknown) == "Unknown");
 }
 
-TEST_CASE("String to enum") {
+TEST_CASE("String to Detector Type") {
     REQUIRE(StringTo<aare::DetectorType>("Generic") ==
             aare::DetectorType::Generic);
     REQUIRE(StringTo<aare::DetectorType>("Eiger") == aare::DetectorType::Eiger);
@@ -48,3 +48,177 @@ TEST_CASE("String to enum") {
     REQUIRE(StringTo<aare::DetectorType>("Unknown") ==
             aare::DetectorType::Unknown);
 }
+
+TEST_CASE("conversion from duration to string") {
+    using ns = std::chrono::nanoseconds;
+    using us = std::chrono::microseconds;
+    using ms = std::chrono::milliseconds;
+    using s = std::chrono::seconds;
+    REQUIRE(ToString(ns(150)) == "150ns");
+    REQUIRE(ToString(ms(783)) == "0.783s");
+    REQUIRE(ToString(ms(783), "ms") == "783ms");
+    REQUIRE(ToString(us(0)) == "0ns"); // Defaults to the lowest unit
+    REQUIRE(ToString(us(0), "s") == "0s");
+    REQUIRE(ToString(s(-1)) == "-1s");
+    REQUIRE(ToString(us(-100)) == "-100us");
+}
+
+TEST_CASE("Convert vector of time") {
+    using ns = std::chrono::nanoseconds;
+    using us = std::chrono::microseconds;
+    using ms = std::chrono::milliseconds;
+    using s = std::chrono::seconds;
+    std::vector<ns> vec{ns(150), us(10), ns(600)};
+    REQUIRE(ToString(vec) == "[150ns, 10us, 600ns]");
+    vec[0] = ms(150);
+    vec[1] = s(10);
+    REQUIRE(ToString(vec) == "[0.15s, 10s, 600ns]");
+    // REQUIRE(ToString(vec, "ns") == "[150ns, 10000ns, 600ns]");
+}
+
+TEST_CASE("string to std::chrono::duration") {
+    using ns = std::chrono::nanoseconds;
+    using us = std::chrono::microseconds;
+    using ms = std::chrono::milliseconds;
+    using s = std::chrono::seconds;
+    REQUIRE(StringTo<ns>("150", "ns") == ns(150));
+    REQUIRE(StringTo<ns>("150us") == us(150));
+    REQUIRE(StringTo<ns>("150ms") == ms(150));
+    REQUIRE(StringTo<s>("3 s") == s(3));
+    REQUIRE_THROWS(StringTo<ns>("5xs"));
+    REQUIRE_THROWS(StringTo<ns>("asvn"));
+}
+
+TEST_CASE("Vector of int") {
+    std::vector<int> vec;
+    REQUIRE(ToString(vec) == "[]");
+
+    vec.push_back(1);
+    REQUIRE(ToString(vec) == "[1]");
+
+    vec.push_back(172);
+    REQUIRE(ToString(vec) == "[1, 172]");
+
+    vec.push_back(5000);
+    REQUIRE(ToString(vec) == "[1, 172, 5000]");
+}
+
+TEST_CASE("Vector of double") {
+    std::vector<double> vec;
+    REQUIRE(ToString(vec) == "[]");
+
+    vec.push_back(1.3);
+    REQUIRE(ToString(vec) == "[1.3]");
+
+    // vec.push_back(5669.325);
+    // REQUIRE(ToString(vec) == "[1.3, 5669.325]");
+
+    // vec.push_back(-5669.325005);
+    // REQUIRE(ToString(vec) == "[1.3, 5669.325, -5669.325005]");
+}
+
+TEST_CASE("String to string") {
+    std::string k = "hej";
+    REQUIRE(ToString(k) == "hej");
+}
+
+TEST_CASE("vector of strings") {
+    std::vector<std::string> vec{"5", "s"};
+    REQUIRE(ToString(vec) == "[5, s]");
+
+    std::vector<std::string> vec2{"some", "strange", "words", "75"};
+    REQUIRE(ToString(vec2) == "[some, strange, words, 75]");
+}
+
+TEST_CASE("uint32 from string") {
+    REQUIRE(StringTo<uint32_t>("0") == 0);
+    REQUIRE(StringTo<uint32_t>("5") == 5u);
+    REQUIRE(StringTo<uint32_t>("16") == 16u);
+    REQUIRE(StringTo<uint32_t>("20") == 20u);
+    REQUIRE(StringTo<uint32_t>("0x14") == 20u);
+    REQUIRE(StringTo<uint32_t>("0x15") == 21u);
+    REQUIRE(StringTo<uint32_t>("0x15") == 0x15);
+    REQUIRE(StringTo<uint32_t>("0xffffff") == 0xffffff);
+}
+
+TEST_CASE("uint64 from string") {
+    REQUIRE(StringTo<uint64_t>("0") == 0);
+    REQUIRE(StringTo<uint64_t>("5") == 5u);
+    REQUIRE(StringTo<uint64_t>("16") == 16u);
+    REQUIRE(StringTo<uint64_t>("20") == 20u);
+    REQUIRE(StringTo<uint64_t>("0x14") == 20u);
+    REQUIRE(StringTo<uint64_t>("0x15") == 21u);
+    REQUIRE(StringTo<uint64_t>("0xffffff") == 0xffffff);
+}
+
+TEST_CASE("int from string") {
+    REQUIRE(StringTo<int>("-1") == -1);
+    REQUIRE(StringTo<int>("-0x1") == -0x1);
+    REQUIRE(StringTo<int>("-0x1") == -1);
+    REQUIRE(StringTo<int>("0") == 0);
+    REQUIRE(StringTo<int>("5") == 5);
+    REQUIRE(StringTo<int>("16") == 16);
+    REQUIRE(StringTo<int>("20") == 20);
+    REQUIRE(StringTo<int>("0x14") == 20);
+    REQUIRE(StringTo<int>("0x15") == 21);
+    REQUIRE(StringTo<int>("0xffffff") == 0xffffff);
+}
+
+TEST_CASE("std::map of strings") {
+    std::map<std::string, std::string> m;
+    m["key"] = "value";
+    auto s = ToString(m);
+    REQUIRE(s == "{key: value}");
+
+    m["chrusi"] = "musi";
+    REQUIRE(ToString(m) == "{chrusi: musi, key: value}");
+
+    m["test"] = "tree";
+    REQUIRE(ToString(m) == "{chrusi: musi, key: value, test: tree}");
+}
+
+TEST_CASE("Formatting ROI") {
+    aare::ROI roi;
+    roi.xmin = 5;
+    roi.xmax = 159;
+    roi.ymin = 6;
+    roi.ymax = 170;
+    REQUIRE(ToString(roi) == "[5, 159, 6, 170]");
+}
+
+TEST_CASE("Streaming of ROI") {
+    aare::ROI roi;
+    roi.xmin = 50;
+    roi.xmax = 109;
+    roi.ymin = 6;
+    roi.ymax = 130;
+    std::ostringstream oss;
+    oss << roi;
+    REQUIRE(oss.str() == "[50, 109, 6, 130]");
+}
+
+// TODO: After StringTo<scanParameters> is implemented
+/*TEST_CASE("Streaming of scanParameters") {
+    using namespace sls;
+    {
+        aare::scanParameters t{};
+        std::ostringstream oss;
+        oss << t;
+        REQUIRE(oss.str() == "[disabled]");
+    }
+    {
+        aare::scanParameters t{defs::VTH2, 500, 1500, 500};
+        std::ostringstream oss;
+        oss << t;
+        REQUIRE(oss.str() == "[enabled\ndac vth2\nstart 500\nstop 1500\nstep "
+                             "500\nsettleTime 1ms\n]");
+    }
+    {
+        aare::scanParameters t{defs::VTH2, 500, 1500, 500,
+                               std::chrono::milliseconds{500}};
+        std::ostringstream oss;
+        oss << t;
+        REQUIRE(oss.str() == "[enabled\ndac vth2\nstart 500\nstop 1500\nstep "
+                             "500\nsettleTime 0.5s\n]");
+    }
+}*/