Test interval class methods #12

tests/CMakeLists.txt

@@ -6,7 +6,7 @@ FetchContent_Declare(
 
 FetchContent_MakeAvailable(googletest)
 
-add_executable(raydiance_test vec3_test.cpp colour_test.cpp ray_test.cpp globals_test.cpp object_test.cpp)
+add_executable(raydiance_test vec3_test.cpp colour_test.cpp ray_test.cpp globals_test.cpp object_test.cpp interval_test.cpp)
 
 target_link_libraries(raydiance_test raydiance_lib GTest::gtest_main)
 

tests/interval_test.cpp

@@ -0,0 +1,37 @@
+#include "raydiance/globals.h"
+#include "raydiance/interval.h"
+#include <gtest/gtest.h>
+
+TEST(IntervalTest, Contains) {
+    interval i(0, 1);
+    EXPECT_TRUE(i.contains(0));
+    EXPECT_TRUE(i.contains(1));
+    EXPECT_TRUE(i.contains(0.5));
+    EXPECT_FALSE(i.contains(-0.1));
+    EXPECT_FALSE(i.contains(2));
+}
+
+TEST(IntervalTest, Surrounds) {
+    interval i(0, 1);
+    EXPECT_TRUE(i.surrounds(0.1));
+    EXPECT_TRUE(i.surrounds(0.95));
+    EXPECT_FALSE(i.surrounds(0));
+    EXPECT_FALSE(i.surrounds(1));
+}
+
+TEST(IntervalTest, Empty) {
+    interval i = interval::empty;
+    EXPECT_FALSE(i.contains(0));
+    EXPECT_FALSE(i.contains(-50));
+    EXPECT_FALSE(i.surrounds(100));
+}
+
+TEST(IntervalTest, Universe) {
+    interval i = interval::universe;
+    EXPECT_TRUE(i.contains(-20));
+    EXPECT_TRUE(i.contains(5));
+    EXPECT_TRUE(i.contains(infinity));
+    EXPECT_FALSE(i.surrounds(infinity));
+    EXPECT_TRUE(i.contains(-infinity));
+    EXPECT_FALSE(i.surrounds(-infinity));
+}