Ensure all examples are tested in both debug and release modes

Makefile

@@ -575,6 +575,7 @@ test-wasi:
 	cargo test --release --tests $(compiler_features) -- wasi::wasitests
 
 test-examples:
+	cargo test $(compiler_features) --features wasi --examples
 	cargo test --release $(compiler_features) --features wasi --examples
 
 test-integration:

examples/early_exit.rs

@@ -107,3 +107,8 @@ fn main() -> anyhow::Result<()> {
         },
     }
 }
+
+#[test]
+fn test_early_exit() -> anyhow::Result<()> {
+    main()
+}

examples/features.rs

@@ -54,3 +54,8 @@ fn main() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn test_features() -> anyhow::Result<()> {
+    main()
+}

examples/hello_world.rs

@@ -85,3 +85,8 @@ fn main() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn test_hello_world() -> anyhow::Result<()> {
+    main()
+}

examples/memory.rs

@@ -137,3 +137,8 @@ fn main() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn test_memory() -> anyhow::Result<()> {
+    main()
+}

examples/table.rs

@@ -152,3 +152,8 @@ fn main() -> anyhow::Result<()> {
 
     Ok(())
 }
+
+#[test]
+fn test_table() -> anyhow::Result<()> {
+    main()
+}