Add Concat generator for combining multiple generators

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/SelfTest/UsageTests/Generators.tests.cpp b/tests/SelfTest/UsageTests/Generators.tests.cpp
index f04cf4f0..b03192cf 100644
--- a/tests/SelfTest/UsageTests/Generators.tests.cpp
+++ b/tests/SelfTest/UsageTests/Generators.tests.cpp
@@ -321,3 +321,16 @@ TEST_CASE( "GENERATE can combine literals and generators", "[generators]" ) {
                                      random( -100, 100 ) ) ) );
     REQUIRE( i % 2 == 0 );
 }
+
+TEST_CASE( "cat generator", "[generators][concat]" ) {
+    SECTION("Simple usage") {
+        const int input = GENERATE( cat( value( 0 ) ), cat( value( 1 ), value( 2 ) ) );
+        REQUIRE( input < 3 );
+    }
+    SECTION( "Used in map" ) {
+        const int input = GENERATE(
+            map( []( int i ) { return i * 2; },
+                 cat( value( 1 ), take( 4, random( 10, 10'000'000 ) ) ) ) );
+        REQUIRE( input % 2 == 0 );
+    }
+}