diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index a5ad33da79..0586acd465 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -88,4 +88,5 @@ jobs:
     - name: Upload coverage to codecov.io
       uses: codecov/codecov-action@v3
       with:
+        token: ${{ secrets.CODECOV_TOKEN }}
         fail_ci_if_error:     true
diff --git a/src/hint_processor/hint_processor_utils.rs b/src/hint_processor/hint_processor_utils.rs
index 407796a7af..431c64790f 100644
--- a/src/hint_processor/hint_processor_utils.rs
+++ b/src/hint_processor/hint_processor_utils.rs
@@ -217,6 +217,32 @@ mod tests {
         );
     }
 
+    #[test]
+    fn get_offset_value_reference_valid() {
+        let mut vm = vm!();
+        vm.memory = memory![((1, 0), 0)];
+        let mut hint_ref = HintReference::new(0, 0, false, true);
+        hint_ref.offset1 = OffsetValue::Reference(Register::FP, 2_i32, false);
+
+        assert_eq!(
+            get_offset_value_reference(&vm, &hint_ref, &ApTracking::new(), &hint_ref.offset1),
+            Ok(mayberelocatable!(1, 2))
+        );
+    }
+
+    #[test]
+    fn get_offset_value_reference_invalid() {
+        let mut vm = vm!();
+        vm.memory = memory![((1, 0), 0)];
+        let mut hint_ref = HintReference::new(0, 0, false, true);
+        hint_ref.offset1 = OffsetValue::Reference(Register::FP, -2_i32, false);
+
+        assert_eq!(
+            get_offset_value_reference(&vm, &hint_ref, &ApTracking::new(), &hint_ref.offset1),
+            Err(HintError::FailedToGetIds)
+        );
+    }
+
     #[test]
     fn get_ptr_from_reference_short_path() {
         let mut vm = vm!();
@@ -287,6 +313,19 @@ mod tests {
         );
     }
 
+    #[test]
+    fn tracking_correction_valid() {
+        let mut ref_ap_tracking = ApTracking::new();
+        ref_ap_tracking.group = 1;
+        let mut hint_ap_tracking = ApTracking::new();
+        hint_ap_tracking.group = 1;
+
+        assert_eq!(
+            apply_ap_tracking_correction(&relocatable!(1, 0), &ref_ap_tracking, &hint_ap_tracking),
+            Ok(relocatable!(1, 0))
+        );
+    }
+
     #[test]
     fn tracking_correction_invalid_group() {
         let mut ref_ap_tracking = ApTracking::new();
diff --git a/src/types/instruction.rs b/src/types/instruction.rs
index b9807955b5..f6f7590d23 100644
--- a/src/types/instruction.rs
+++ b/src/types/instruction.rs
@@ -116,4 +116,12 @@ mod tests {
         let encoded_instruction = Felt::new(4612671187288031229_i64);
         assert!(!is_call_instruction(&encoded_instruction, None));
     }
+
+    #[test]
+    fn instruction_size() {
+        let encoded_instruction = Felt::new(1226245742482522112_i64);
+        let instruction =
+            decode_instruction(encoded_instruction.to_i64().unwrap(), Some(&Felt::new(2))).unwrap();
+        assert_eq!(instruction.size(), 2);
+    }
 }
diff --git a/src/vm/runners/builtin_runner/output.rs b/src/vm/runners/builtin_runner/output.rs
index 3bc78f6060..ac9ab26f39 100644
--- a/src/vm/runners/builtin_runner/output.rs
+++ b/src/vm/runners/builtin_runner/output.rs
@@ -359,4 +359,60 @@ mod tests {
         vm.segments.segment_used_sizes = Some(vec![4]);
         assert_eq!(builtin.get_used_cells(&vm.segments), Ok(4));
     }
+
+    #[test]
+    fn test_get_used_instances_missing_segments() {
+        let builtin = BuiltinRunner::Output(OutputBuiltinRunner::new(true));
+        let memory_segment_manager = MemorySegmentManager::new();
+
+        assert_eq!(
+            builtin.get_used_instances(&memory_segment_manager),
+            Err(MemoryError::MissingSegmentUsedSizes)
+        );
+    }
+
+    #[test]
+    fn test_get_used_instances_valid() {
+        let builtin = BuiltinRunner::Output(OutputBuiltinRunner::new(true));
+        let mut memory_segment_manager = MemorySegmentManager::new();
+        memory_segment_manager.segment_used_sizes = Some(vec![0]);
+
+        assert_eq!(builtin.get_used_instances(&memory_segment_manager), Ok(0));
+    }
+
+    #[test]
+    fn test_deduce_memory_cell_output_builtin() {
+        let builtin = BuiltinRunner::Output(OutputBuiltinRunner::new(true));
+        let mut vm = vm!();
+
+        vm.memory = memory![
+            ((0, 0), (0, 0)),
+            ((0, 1), (0, 1)),
+            ((2, 0), (0, 0)),
+            ((2, 1), 2)
+        ];
+
+        vm.segments.segment_used_sizes = Some(vec![0]);
+
+        let pointer = Relocatable::from((2, 2));
+
+        assert_eq!(builtin.deduce_memory_cell(&pointer, &vm.memory), Ok(None));
+    }
+
+    #[test]
+    fn test_add_validation_rule() {
+        let builtin = OutputBuiltinRunner::new(true);
+        let mut vm = vm!();
+
+        vm.memory = memory![
+            ((0, 0), (0, 0)),
+            ((0, 1), (0, 1)),
+            ((2, 0), (0, 0)),
+            ((2, 1), 2)
+        ];
+
+        vm.segments.segment_used_sizes = Some(vec![0]);
+
+        assert_eq!(builtin.add_validation_rule(&mut vm.memory), Ok(()));
+    }
 }
diff --git a/src/vm/runners/builtin_runner/range_check.rs b/src/vm/runners/builtin_runner/range_check.rs
index 6239c7af13..0016ee71f0 100644
--- a/src/vm/runners/builtin_runner/range_check.rs
+++ b/src/vm/runners/builtin_runner/range_check.rs
@@ -512,6 +512,18 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_base() {
+        let builtin = RangeCheckBuiltinRunner::new(8, 8, true);
+        assert_eq!(builtin.base(), 0);
+    }
+
+    #[test]
+    fn test_ratio() {
+        let builtin = RangeCheckBuiltinRunner::new(8, 8, true);
+        assert_eq!(builtin.ratio(), 8);
+    }
+
     #[test]
     fn get_used_cells_missing_segment_used_sizes() {
         let builtin = BuiltinRunner::RangeCheck(RangeCheckBuiltinRunner::new(256, 8, true));
diff --git a/src/vm/runners/builtin_runner/signature.rs b/src/vm/runners/builtin_runner/signature.rs
index 395bc6abe2..886d907cad 100644
--- a/src/vm/runners/builtin_runner/signature.rs
+++ b/src/vm/runners/builtin_runner/signature.rs
@@ -281,6 +281,27 @@ mod tests {
         },
     };
 
+    #[test]
+    fn get_used_cells_and_allocated_size_error() {
+        let builtin = SignatureBuiltinRunner::new(&EcdsaInstanceDef::default(), true);
+        let mut vm = vm!();
+        vm.current_step = 100;
+        vm.segments.segment_used_sizes = Some(vec![1]);
+        assert_eq!(
+            builtin.get_used_cells_and_allocated_size(&vm),
+            Err(MemoryError::InsufficientAllocatedCells)
+        );
+    }
+
+    #[test]
+    fn get_used_cells_and_allocated_size_valid() {
+        let builtin = SignatureBuiltinRunner::new(&EcdsaInstanceDef::new(10), true);
+        let mut vm = vm!();
+        vm.current_step = 110;
+        vm.segments.segment_used_sizes = Some(vec![1]);
+        assert_eq!(builtin.get_used_cells_and_allocated_size(&vm), Ok((1, 22)));
+    }
+
     #[test]
     fn initialize_segments_for_ecdsa() {
         let mut builtin = SignatureBuiltinRunner::new(&EcdsaInstanceDef::default(), true);
@@ -487,4 +508,31 @@ mod tests {
         let result = builtin.deduce_memory_cell(&Relocatable::from((0, 5)), &memory);
         assert_eq!(result, Ok(None));
     }
+
+    #[test]
+    fn test_ratio() {
+        let builtin = SignatureBuiltinRunner::new(&EcdsaInstanceDef::default(), true);
+        assert_eq!(builtin.ratio(), 512);
+    }
+
+    #[test]
+    fn test_base() {
+        let builtin = SignatureBuiltinRunner::new(&EcdsaInstanceDef::default(), true);
+        assert_eq!(builtin.base(), 0);
+    }
+
+    #[test]
+    fn test_get_memory_segment_addresses() {
+        let builtin = SignatureBuiltinRunner::new(&EcdsaInstanceDef::default(), true);
+
+        assert_eq!(builtin.get_memory_segment_addresses(), (0, None));
+    }
+
+    #[test]
+    fn deduce_memory_cell() {
+        let memory = Memory::new();
+        let builtin = SignatureBuiltinRunner::new(&EcdsaInstanceDef::default(), true);
+        let result = builtin.deduce_memory_cell(&Relocatable::from((0, 5)), &memory);
+        assert_eq!(result, Ok(None));
+    }
 }