diff --git a/mist-test/src/common/decl_test.mist b/mist-test/src/common/decl_test.mist
index bbbf735..f8ba2c9 100644
--- a/mist-test/src/common/decl_test.mist
+++ b/mist-test/src/common/decl_test.mist
@@ -106,6 +106,27 @@ pub void test_let_bool()
     assert_eq!(t, !f);
 }
 
+pub void test_let_decl_only()
+{
+    let x;
+    x = 42;
+    assert_eq!(x, 42);
+}
+
+pub void test_let_typed_decl_only()
+{
+    i32 x;
+    x = 100;
+    assert_eq!(x, 100);
+}
+
+pub void test_let_decl_mut_no_init()
+{
+    let mut x;
+    x = 5;
+    assert_eq!(x, 5);
+}
+
 pub void run_tests()
 {
     test_let_basic();
@@ -120,4 +141,7 @@ pub void run_tests()
     test_let_with_type_and_init();
     test_string_literal();
     test_let_bool();
+    test_let_decl_only();
+    test_let_typed_decl_only();
+    test_let_decl_mut_no_init();
 }
diff --git a/mist-test/src/common/expr_test.mist b/mist-test/src/common/expr_test.mist
index c2f9fd7..6fae0ef 100644
--- a/mist-test/src/common/expr_test.mist
+++ b/mist-test/src/common/expr_test.mist
@@ -155,6 +155,63 @@ pub void test_binary_assign()
     assert_eq!(x, 2);
 }
 
+pub void test_binary_assign_bit()
+{
+    let mut x = 10;
+    x &= 12;
+    assert_eq!(x, 8);
+    x |= 1;
+    assert_eq!(x, 9);
+    x ^= 3;
+    assert_eq!(x, 10);
+    let mut y = 8;
+    y <<= 2;
+    assert_eq!(y, 32);
+    y >>= 1;
+    assert_eq!(y, 16);
+}
+
+pub void test_empty_tuple()
+{
+    let t = ();
+    assert_eq!(t, ());
+}
+
+pub void test_empty_array()
+{
+    let arr = [0; 0];
+    assert_eq!(arr.len(), 0);
+}
+
+pub void test_range_inclusive()
+{
+    let mut sum = 0;
+    for i in 1 ..= 3 {
+        sum += i;
+    }
+    assert_eq!(sum, 6);
+}
+
+pub void test_closure_no_args()
+{
+    let f = () => 42;
+    assert_eq!(f(), 42);
+}
+
+pub void test_closure_with_typed_params()
+{
+    let add = (i32 a, i32 b) => a + b;
+    assert_eq!(add(3, 4), 7);
+}
+
+pub void test_mut_ref()
+{
+    let mut x = 42;
+    let r = &mut x;
+    *r = 100;
+    assert_eq!(x, 100);
+}
+
 pub void run_tests()
 {
     test_literals();
@@ -174,4 +231,11 @@ pub void run_tests()
     test_if_expr();
     test_range_expr();
     test_binary_assign();
+    test_binary_assign_bit();
+    test_empty_tuple();
+    test_empty_array();
+    test_range_inclusive();
+    test_closure_no_args();
+    test_closure_with_typed_params();
+    test_mut_ref();
 }
diff --git a/mist-test/src/common/statement_test.mist b/mist-test/src/common/statement_test.mist
index aeab488..ad4f5bf 100644
--- a/mist-test/src/common/statement_test.mist
+++ b/mist-test/src/common/statement_test.mist
@@ -160,6 +160,68 @@ pub void test_for_with_pattern_destructure()
     assert_eq!(keys, 3);
 }
 
+pub void test_c_for_loop()
+{
+    let mut sum = 0;
+    for (let mut i = 0; i < 4; i++) {
+        sum += i;
+    }
+    assert_eq!(sum, 6);
+}
+
+pub void test_unsafe_block()
+{
+    let mut x = 42;
+    unsafe {
+        let r = &mut x;
+        *r = 100;
+    }
+    assert_eq!(x, 100);
+}
+
+pub void test_match_parenthesized()
+{
+    let result;
+    match (2) {
+        1 => result = 10,
+        2 => result = 20,
+        _ => panic!(),
+    }
+    assert_eq!(result, 20);
+}
+
+pub void test_if_parenthesized()
+{
+    let mut x = 0;
+    if (true) {
+        x = 1;
+    }
+    assert_eq!(x, 1);
+}
+
+pub void test_while_parenthesized()
+{
+    let mut count = 0;
+    while (count < 3) {
+        count++;
+    }
+    assert_eq!(count, 3);
+}
+
+pub void test_loop_with_break_value()
+{
+    let mut x = 0;
+    let result;
+    loop {
+        if x >= 3 {
+            result = x;
+            break;
+        }
+        x++;
+    }
+    assert_eq!(result, 3);
+}
+
 pub void run_tests()
 {
     test_var_decl();
@@ -176,4 +238,10 @@ pub void run_tests()
     test_match_or_pattern();
     test_match_default();
     test_for_with_pattern_destructure();
+    test_c_for_loop();
+    test_unsafe_block();
+    test_match_parenthesized();
+    test_if_parenthesized();
+    test_while_parenthesized();
+    test_loop_with_break_value();
 }
diff --git a/mist-test/src/common/types_test.mist b/mist-test/src/common/types_test.mist
index 76894b9..7474b63 100644
--- a/mist-test/src/common/types_test.mist
+++ b/mist-test/src/common/types_test.mist
@@ -52,6 +52,30 @@ pub void test_fn_return_type() {
     assert_eq!(add(3, 4), 7);
 }
 
+pub void test_generic_type() {
+    Option<i32> x = Option::Some(42);
+    assert_eq!(x.is_some(), true);
+}
+
+type MyInt = i32;
+
+pub void test_type_alias() {
+    MyInt x = 42;
+    assert_eq!(x, 42);
+}
+
+const i32 MY_CONST = 100;
+
+pub void test_const_decl() {
+    assert_eq!(MY_CONST, 100);
+}
+
+static i32 my_static = 200;
+
+pub void test_static_decl() {
+    assert_eq!(my_static, 200);
+}
+
 pub void run_tests() {
     test_integer_type();
     test_float_type();
@@ -62,4 +86,8 @@ pub void run_tests() {
     test_mut_ref_type();
     test_void_type();
     test_fn_return_type();
+    test_generic_type();
+    test_type_alias();
+    test_const_decl();
+    test_static_decl();
 }
diff --git a/mist-test/src/items/attribute_test.mist b/mist-test/src/items/attribute_test.mist
index 257ca0b..320b952 100644
--- a/mist-test/src/items/attribute_test.mist
+++ b/mist-test/src/items/attribute_test.mist
@@ -22,8 +22,21 @@ pub void test_allow_attribute()
     assert_eq!(x, 42);
 }
 
+#[allow(dead_code)]
+pub struct Tagged
+{
+    i32 id;
+}
+
+pub void test_attribute_with_args()
+{
+    Tagged t = Tagged { id: 1 };
+    assert_eq!(t.id, 1);
+}
+
 pub void run_tests()
 {
     test_derive_attribute();
     test_allow_attribute();
+    test_attribute_with_args();
 }
diff --git a/mist-test/src/items/class_test.mist b/mist-test/src/items/class_test.mist
index a0a0f5b..98d6f03 100644
--- a/mist-test/src/items/class_test.mist
+++ b/mist-test/src/items/class_test.mist
@@ -59,10 +59,73 @@ pub class Dog : Mammal
     }
 }
 
+pub class Counter
+{
+    pub i32 count;
+
+    constructor()
+    {
+        self.count = 42;
+    }
+
+    i32 get_count(&self)
+    {
+        self.count
+    }
+
+    pub i32 static_fn()
+    {
+        99
+    }
+}
+
+pub void test_class_no_inheritance()
+{
+    Counter c = Counter::new();
+    assert_eq!(c.get_count(), 42);
+}
+
+pub class WithDefault
+{
+    pub String name = "default".to_string();
+    pub i32 value = 42;
+
+    constructor()
+    {
+    }
+
+    pub String get_name(&self)
+    {
+        self.name.clone()
+    }
+}
+
+pub void test_class_field_default()
+{
+    WithDefault w = WithDefault::new();
+    assert_eq!(w.get_name(), "default");
+    assert_eq!(w.value, 42);
+}
+
+pub class EmptyClass
+{
+    constructor()
+    {
+    }
+}
+
+pub void test_class_empty()
+{
+    EmptyClass e = EmptyClass::new();
+}
+
 pub void run_tests()
 {
     let dawg = Dog::new();
     dawg.args_test(10, "hello");
     dawg.test_speak();
     assert_eq!(format!("{dawg}"), "🐾 Rex");
+    test_class_no_inheritance();
+    test_class_field_default();
+    test_class_empty();
 }
diff --git a/mist-test/src/items/enum_test.mist b/mist-test/src/items/enum_test.mist
index 2bc7f3c..b39b734 100644
--- a/mist-test/src/items/enum_test.mist
+++ b/mist-test/src/items/enum_test.mist
@@ -90,10 +90,40 @@ pub void test_enum_eq()
     }
 }
 
+enum Option<T>
+{
+    None;
+    Some(T);
+}
+
+pub void test_generic_enum()
+{
+    Option<i32> x = Option::Some(42);
+    match x {
+        Option::Some(v) => {
+            assert_eq!(v, 42);
+        }
+        _ => {
+            assert_eq!(0, 1);
+        }
+    }
+
+    Option<bool> y = Option::None;
+    match y {
+        Option::None => {
+            assert_eq!(1, 1);
+        }
+        _ => {
+            assert_eq!(0, 1);
+        }
+    }
+}
+
 pub void run_tests()
 {
     test_enum_named();
     test_enum_tuple();
     test_enum_struct();
     test_enum_eq();
+    test_generic_enum();
 }
diff --git a/mist-test/src/items/function_test.mist b/mist-test/src/items/function_test.mist
index 65b0515..37beac3 100644
--- a/mist-test/src/items/function_test.mist
+++ b/mist-test/src/items/function_test.mist
@@ -69,6 +69,17 @@ pub void test_recursive_fn()
     assert_eq!(factorial(5), 120);
 }
 
+T identity<T>(T x)
+{
+    x
+}
+
+pub void test_fn_generic()
+{
+    assert_eq!(identity(42), 42);
+    assert_eq!(identity("hello"), "hello");
+}
+
 pub void run_tests()
 {
     test_basic_function();
@@ -79,4 +90,5 @@ pub void run_tests()
     test_method_call();
     test_nested_fn_calls();
     test_recursive_fn();
+    test_fn_generic();
 }
diff --git a/mist-test/src/items/impl_test.mist b/mist-test/src/items/impl_test.mist
index 1222b03..9e9fe55 100644
--- a/mist-test/src/items/impl_test.mist
+++ b/mist-test/src/items/impl_test.mist
@@ -72,9 +72,29 @@ pub void test_multiple_impls()
     assert_eq!(c.y, 6);
 }
 
+struct Wrapper<T>
+{
+    T value;
+}
+
+impl<T: Copy> Wrapper<T>
+{
+    pub T get(&self)
+    {
+        self.value
+    }
+}
+
+pub void test_impl_generic()
+{
+    Wrapper<i32> w = Wrapper { value: 42 };
+    assert_eq!(w.get(), 42);
+}
+
 pub void run_tests()
 {
     test_inherent_impl();
     test_trait_impl_block();
     test_multiple_impls();
+    test_impl_generic();
 }
diff --git a/mist-test/src/items/struct_test.mist b/mist-test/src/items/struct_test.mist
index a871373..93a8379 100644
--- a/mist-test/src/items/struct_test.mist
+++ b/mist-test/src/items/struct_test.mist
@@ -59,10 +59,55 @@ pub void test_struct_nested()
     assert_eq!(l.end.y, 10);
 }
 
+struct Empty {}
+
+pub void test_empty_struct()
+{
+    let e = Empty {};
+}
+
+struct Pair<T>
+{
+    T first;
+    T second;
+}
+
+pub void test_generic_struct()
+{
+    Pair<i32> p = Pair<i32> { first: 1, second: 2 };
+    assert_eq!(p.first, 1);
+    assert_eq!(p.second, 2);
+}
+
+pub void test_struct_partial_destructure()
+{
+    let p = Point {
+        x: 10,
+        y: 20,
+    };
+    let Point {x, ..} = p;
+    assert_eq!(x, 10);
+}
+
+pub void test_struct_destructure_rename()
+{
+    let p = Point {
+        x: 5,
+        y: 15,
+    };
+    let Point {x: a, y: b} = p;
+    assert_eq!(a, 5);
+    assert_eq!(b, 15);
+}
+
 pub void run_tests()
 {
     test_struct_create_access();
     test_struct_mut_field();
     test_struct_destructure();
     test_struct_nested();
+    test_empty_struct();
+    test_generic_struct();
+    test_struct_partial_destructure();
+    test_struct_destructure_rename();
 }