Add gpio input test

Author: Sh3Rm4n

testsuite/tests/gpio_input.rs

@@ -0,0 +1,54 @@
+#![no_std]
+#![no_main]
+
+use defmt_rtt as _;
+use panic_probe as _;
+
+use stm32f3xx_hal as hal;
+
+use hal::gpio::{Input, PXx};
+
+struct State {
+    input_ground: PXx<Input>,
+    input_vdd: PXx<Input>,
+}
+
+#[defmt_test::tests]
+mod tests {
+    use defmt::{assert, unwrap};
+    use stm32f3xx_hal::{pac, prelude::*};
+
+    // Test the defaults with no configuration
+    #[init]
+    fn init() -> super::State {
+        let dp = unwrap!(pac::Peripherals::take());
+
+        let mut rcc = dp.RCC.constrain();
+        let mut gpioc = dp.GPIOC.split(&mut rcc.ahb);
+        let input_ground = gpioc
+            .pc3
+            .into_floating_input(&mut gpioc.moder, &mut gpioc.pupdr)
+            .downgrade()
+            .downgrade();
+        let input_vdd = gpioc
+            .pc2
+            .into_floating_input(&mut gpioc.moder, &mut gpioc.pupdr)
+            .downgrade()
+            .downgrade();
+
+        super::State {
+            input_ground,
+            input_vdd,
+        }
+    }
+
+    #[test]
+    fn ground_is_low(state: &mut super::State) {
+        assert!(unwrap!(state.input_ground.is_low()));
+    }
+
+    #[test]
+    fn vdd_is_high(state: &mut super::State) {
+        assert!(unwrap!(state.input_vdd.is_high()));
+    }
+}