Merge pull request #39 from Progmasoft/feature/per-test-coverage

Keep per-test coverage with --coverage (roadmap step 4)

1 files changed, 44 insertions, 0 deletions

diff --git a/tests/Progmasoft/CoverageFixture.cpp b/tests/Progmasoft/CoverageFixture.cpp
new file mode 100644
index 00000000..e728bbca
--- /dev/null
+++ b/tests/Progmasoft/CoverageFixture.cpp
@@ -0,0 +1,44 @@
+// Copyright (c) 2026 Progmasoft.
+// SPDX-License-Identifier: MPL-2.0 WITH AdditionRef-Progmasoft-Exception-2.0
+
+// A test binary built with coverage instrumentation, for the integration
+// tests of `--coverage`: each test reaches lines the other does not. The
+// markers at the ends of lines let the tests find those lines.
+
+#include <Progmasoft/Catch3/TestMacros.hpp>
+
+namespace
+{
+    int
+    AddOne(int value)
+    {
+        return value + 1; // coverage: add-one
+    }
+
+    int
+    SubtractOne(int value)
+    {
+        return value - 1; // coverage: subtract-one
+    }
+
+    int
+    NonNegative(int value)
+    {
+        if (value < 0) // coverage: branch
+        {
+            return 0;
+        }
+        return value;
+    }
+} // namespace
+
+TEST_CASE("Adds one", "[coverage]")
+{
+    CHECK(AddOne(1) == 2);
+    CHECK(NonNegative(AddOne(1)) == 2);
+}
+
+TEST_CASE("Subtracts one", "[coverage]")
+{
+    CHECK(SubtractOne(1) == 0);
+}