tests for Result

slsDetectorSoftware/tests/test-Result.cpp

@@ -1,18 +1,21 @@
 #include "Result.h"
+#include "TypeTraits.h"
 #include "catch.hpp"
-
-#include <type_traits>
 #include <string>
 
 using sls::Result;
 
-TEST_CASE("Default construction", "[detector][n2]") {
+TEST_CASE("Result looks and behaves like a standard container") {
+    REQUIRE(sls::is_container<Result<int>>::value == true);
+}
+
+TEST_CASE("Default construction is possible and gives an empty result") {
     Result<int> res;
     REQUIRE(res.size() == 0);
     REQUIRE(res.empty() == true);
 }
 
-TEST_CASE("Initializer list construction", "[n2]") {
+TEST_CASE("Result can be constructed from std::initializer_list") {
     Result<int> res{1, 2, 5};
     REQUIRE(res.empty() == false);
     REQUIRE(res.size() == 3);
@@ -21,7 +24,7 @@ TEST_CASE("Initializer list construction", "[n2]") {
     REQUIRE(res[2] == 5);
 }
 
-TEST_CASE("Construct with value and number", "[n2]") {
+TEST_CASE("Like vector it can be constructed from size and value") {
     Result<int> res(5, 7);
     REQUIRE(res.size() == 5);
     REQUIRE(res[0] == 7);
@@ -31,56 +34,94 @@ TEST_CASE("Construct with value and number", "[n2]") {
     REQUIRE(res[4] == 7);
 }
 
-TEST_CASE("Squash empty", "[n2]") {
+TEST_CASE("Calling squash on an empty Result produces default value") {
     Result<double> res;
     REQUIRE(res.squash() == 0.);
+
+    Result<unsigned> res2;
+    REQUIRE(res2.squash() == 0u);
+
+    Result<std::string> res3;
+    REQUIRE(res3.squash() == "");
 }
 
-TEST_CASE("Squash gives either value or default constructed value", "[n2]") {
+TEST_CASE("When equal squash gives the front value") {
     Result<int> res{3, 3, 3};
     REQUIRE(res.squash() == 3);
+}
 
-    res.push_back(5);
+TEST_CASE("When elements are not equal squash gives default value") {
+    Result<int> res{3, 3, 3, 5};
     REQUIRE(res.squash() == 0);
+}
+
+TEST_CASE("String compare with squash") {
+    Result<std::string> res{"hej", "hej", "hej"};
+    REQUIRE(res.squash() == "hej");
+}
+
+TEST_CASE("tsquash throws for different elements") {
+    Result<int> res{1, 2, 3};
+    REQUIRE_THROWS(res.tsquash("something is wrong"));
+}
+
+TEST_CASE("tsquash returns front element when equal") {
+    Result<std::string> res{"word", "word"};
+    REQUIRE(res.tsquash("error") == "word");
+}
+
+TEST_CASE("When provided squash gives default value if elements differ") {
+    Result<int> res{5, 5, 5};
+    REQUIRE(res.squash(-1) == 5);
+
+    res.push_back(7); // adding a different value
     REQUIRE(res.squash(-1) == -1);
 }
 
-TEST_CASE("Updating an element", "[n2]") {
-
+TEST_CASE("It is possible to update elements by index access") {
     Result<int> res{1, 2, 3};
-    REQUIRE(res[0] == 1);
-    REQUIRE(res[1] == 2);
-    REQUIRE(res[2] == 3);
-
     res[0] = 5;
     REQUIRE(res[0] == 5);
     REQUIRE(res[1] == 2);
     REQUIRE(res[2] == 3);
 }
 
-TEST_CASE("equal", "[n2]"){
+TEST_CASE("Check if elements are equal") {
     Result<float> res;
+    REQUIRE(res.equal() == false); // no elements to compare
 
-    // There are no elements to compare
-    REQUIRE(res.equal() == false);
-
-    //all (the one) elements are equal
-    res.push_back(1.2);
+    res.push_back(1.2); // one element "all" equal
     REQUIRE(res.equal() == true);
 
-    res.push_back(1.2);
+    res.push_back(1.2); // two elements
     REQUIRE(res.equal() == true);
 
-    res.push_back(1.3);
+    res.push_back(1.3); // three elements 1.2, 1.2, 1.3
     REQUIRE(res.equal() == false);
 }
 
-TEST_CASE("throws for tsquash", "[n2]"){
-    Result<int> res{1,2,3};
-    REQUIRE_THROWS(res.tsquash("something is wrong"));
+TEST_CASE("Result can be converted to std::vector") {
+    Result<short> res{1, 2, 3, 4, 5};
+    std::vector<short> vec{1, 2, 3, 4, 5};
+    std::vector<short> vec2 = res;
+    REQUIRE(vec2 == vec);
 }
 
-TEST_CASE("", "[n2]"){
-    Result<std::string> res{"hej", "hej", "hej"};
-    REQUIRE(res.squash() == "hej");
-}
+TEST_CASE("Result can be printed using <<") {
+    Result<int> res{1, 2, 3};
+    std::ostringstream os;
+    os << res;
+    REQUIRE(os.str() == "[1, 2, 3]");
+}
+
+TEST_CASE("Convert from Result<int> to Result<ns>") {
+    // This function is used when the detector class
+    // returns time as integers
+    using ns = std::chrono::nanoseconds;
+    Result<int> res{10, 50, 236};
+
+    Result<std::chrono::nanoseconds> res2 = res;
+    REQUIRE(res2[0] == ns(10));
+    REQUIRE(res2[1] == ns(50));
+    REQUIRE(res2[2] == ns(236));
+}

slsSupportLib/tests/CMakeLists.txt

@@ -8,4 +8,5 @@ target_sources(tests PRIVATE
                 ${CMAKE_CURRENT_SOURCE_DIR}/test-Sockets.cpp
                 ${CMAKE_CURRENT_SOURCE_DIR}/test-FixedCapacityContainer.cpp
                 ${CMAKE_CURRENT_SOURCE_DIR}/test-ToString.cpp
+                ${CMAKE_CURRENT_SOURCE_DIR}/test-TypeTraits.cpp
                 )

slsSupportLib/tests/test-TypeTraits.cpp

@@ -0,0 +1,10 @@
+#include "catch.hpp"
+#include "TypeTraits.h"
+#include <vector>
+#include <array>
+
+TEST_CASE("something", "[n3]"){
+
+    CHECK(sls::is_container<std::vector<int>>::value == true);
+    CHECK(sls::is_container<std::array<double, 3>>::value == true);
+}