From 532cd88e96ef351dcf1665dce2a4dc560510d329 Mon Sep 17 00:00:00 2001
From: Paul Fd <paul@ferrand.cc>
Date: Sat, 7 Mar 2020 21:27:19 +0100
Subject: [PATCH] Add some tests on effect gains

---
 tests/SynthT.cpp                   | 60 ++++++++++++++++++++++++++++++
 tests/TestFiles/Effects/to_mix.sfz | 11 ++++++
 2 files changed, 71 insertions(+)
 create mode 100644 tests/TestFiles/Effects/to_mix.sfz

diff --git a/tests/SynthT.cpp b/tests/SynthT.cpp
index 822f1d0a..9ed0c73c 100644
--- a/tests/SynthT.cpp
+++ b/tests/SynthT.cpp
@@ -259,3 +259,63 @@ TEST_CASE("[Synth] No effect in the main bus")
     REQUIRE( bus->gainToMain() == 1 );
     REQUIRE( bus->gainToMix() == 0 );
 }
+
+TEST_CASE("[Synth] One effect")
+{
+    sfz::Synth synth;
+    synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Effects/bitcrusher_1.sfz");
+    auto bus = synth.getEffectBusView(0);
+    REQUIRE( bus != nullptr); // We have a main bus
+    REQUIRE( bus->numEffects() == 1 );
+    REQUIRE( bus->gainToMain() == 1 );
+    REQUIRE( bus->gainToMix() == 0 );
+}
+
+TEST_CASE("[Synth] Effect on a second bus")
+{
+    sfz::Synth synth;
+    synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Effects/bitcrusher_2.sfz");
+    auto bus = synth.getEffectBusView(0);
+    REQUIRE( bus != nullptr); // We have a main bus
+    REQUIRE( bus->numEffects() == 0 );
+    REQUIRE( bus->gainToMain() == 0.5 );
+    REQUIRE( bus->gainToMix() == 0 );
+    bus = synth.getEffectBusView(1);
+    REQUIRE( bus != nullptr);
+    REQUIRE( bus->numEffects() == 1 );
+    REQUIRE( bus->gainToMain() == 0.5 );
+    REQUIRE( bus->gainToMix() == 0 );
+}
+
+
+TEST_CASE("[Synth] Effect on a third bus")
+{
+    sfz::Synth synth;
+    synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Effects/bitcrusher_3.sfz");
+    auto bus = synth.getEffectBusView(0);
+    REQUIRE( bus != nullptr); // We have a main bus
+    REQUIRE( bus->numEffects() == 0 );
+    REQUIRE( bus->gainToMain() == 0.5 );
+    REQUIRE( bus->gainToMix() == 0 );
+    bus = synth.getEffectBusView(3);
+    REQUIRE( bus != nullptr);
+    REQUIRE( bus->numEffects() == 1 );
+    REQUIRE( bus->gainToMain() == 0.5 );
+    REQUIRE( bus->gainToMix() == 0 );
+}
+
+TEST_CASE("[Synth] Gain to mix")
+{
+    sfz::Synth synth;
+    synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Effects/to_mix.sfz");
+    auto bus = synth.getEffectBusView(0);
+    REQUIRE( bus != nullptr); // We have a main bus
+    REQUIRE( bus->numEffects() == 0 );
+    REQUIRE( bus->gainToMain() == 1 );
+    REQUIRE( bus->gainToMix() == 0 );
+    bus = synth.getEffectBusView(1);
+    REQUIRE( bus != nullptr);
+    REQUIRE( bus->numEffects() == 1 );
+    REQUIRE( bus->gainToMain() == 0 );
+    REQUIRE( bus->gainToMix() == 0.5 );
+}
diff --git a/tests/TestFiles/Effects/to_mix.sfz b/tests/TestFiles/Effects/to_mix.sfz
new file mode 100644
index 00000000..8f12e70e
--- /dev/null
+++ b/tests/TestFiles/Effects/to_mix.sfz
@@ -0,0 +1,11 @@
+<region>
+lokey=0
+hikey=127
+sample=*sine
+
+<effect>
+fx1tomix=50
+bus=fx1
+type=lofi
+bitred=90
+decim=10