WIP: Retreived the unit tests (formerly test cases)

Some of these still work, others have just been dummied out for now.

Also added tests for console colors tool, and tweaked it to work
properly.

tests/units/test_stack.c

@@ -0,0 +1,150 @@
+#include "toy_stack.h"
+#include "toy_console_colors.h"
+
+#include <stdio.h>
+
+int test_stack_basics(void) {
+	//allocate and free the stack
+	{
+		Toy_Stack* stack = Toy_allocateStack();
+
+		//check if it worked
+		if (
+			stack == NULL ||
+			stack->capacity != 8 ||
+			stack->count != 0)
+		{
+			fprintf(stderr, TOY_CC_ERROR "ERROR: failed to allocate Toy_Stack\n" TOY_CC_RESET);
+			Toy_freeStack(stack);
+			return -1;
+		}
+
+		Toy_freeStack(stack);
+	}
+
+	//push, peek and pop stack
+	{
+		Toy_Stack* stack = Toy_allocateStack();
+
+		//check if it worked (push)
+		Toy_pushStack(&stack, TOY_VALUE_FROM_INTEGER(42));
+		Toy_pushStack(&stack, TOY_VALUE_FROM_INTEGER(69));
+		Toy_pushStack(&stack, TOY_VALUE_FROM_INTEGER(420));
+		if (
+			stack == NULL ||
+			stack->capacity != 8 ||
+			stack->count != 3)
+		{
+			fprintf(stderr, TOY_CC_ERROR "ERROR: failed to push Toy_Stack\n" TOY_CC_RESET);
+			Toy_freeStack(stack);
+			return -1;
+		}
+
+		//check if it worked (peek)
+		Toy_Value top1 = Toy_peekStack(&stack);
+		if (
+			TOY_VALUE_IS_INTEGER(top1) != true ||
+			TOY_VALUE_AS_INTEGER(top1) != 420)
+		{
+			fprintf(stderr, TOY_CC_ERROR "ERROR: failed to peek Toy_Stack\n" TOY_CC_RESET);
+			Toy_freeStack(stack);
+			return -1;
+		}
+
+		//check if it worked (pop)
+		Toy_Value top2 = Toy_popStack(&stack);
+		if (
+			stack == NULL ||
+			stack->capacity != 8 ||
+			stack->count != 2 ||
+			TOY_VALUE_IS_INTEGER(top2) != true ||
+			TOY_VALUE_AS_INTEGER(top2) != 420)
+		{
+			fprintf(stderr, TOY_CC_ERROR "ERROR: failed to pop Toy_Stack\n" TOY_CC_RESET);
+			Toy_freeStack(stack);
+			return -1;
+		}
+
+		//check if it worked (post-pop peek)
+		Toy_Value top3 = Toy_peekStack(&stack);
+		if (
+			TOY_VALUE_IS_INTEGER(top3) != true ||
+			TOY_VALUE_AS_INTEGER(top3) != 69)
+		{
+			fprintf(stderr, TOY_CC_ERROR "ERROR: failed to pop then peek Toy_Stack\n" TOY_CC_RESET);
+			Toy_freeStack(stack);
+			return -1;
+		}
+
+		Toy_freeStack(stack);
+	}
+
+	return 0;
+}
+
+int test_stack_stress(void) {
+	//stress the stack
+	{
+		Toy_Stack* stack = Toy_allocateStack();
+
+		//push 500 values
+		for (int i = 0; i < 500; i++) {
+			Toy_pushStack(&stack, TOY_VALUE_FROM_INTEGER(i));
+		}
+
+		//check if it worked
+		if (
+			stack == NULL ||
+			stack->capacity != 512 ||
+			stack->count != 500)
+		{
+			fprintf(stderr, TOY_CC_ERROR "ERROR: failed to stress push the Toy_Stack\n" TOY_CC_RESET);
+			Toy_freeStack(stack);
+			return -1;
+		}
+
+		//pop each value
+		while(stack->count > 0) {
+			Toy_popStack(&stack); //ignore the results
+		}
+
+		//check if it worked
+		if (
+			stack == NULL ||
+			stack->capacity != TOY_STACK_INITIAL_CAPACITY || //reset to initial capacity
+			stack->count != 0)
+		{
+			fprintf(stderr, TOY_CC_ERROR "ERROR: failed to stress pop the Toy_Stack\n" TOY_CC_RESET);
+			Toy_freeStack(stack);
+			return -1;
+		}
+
+		//cleanup
+		Toy_freeStack(stack);
+	}
+
+	return 0;
+}
+
+int main(void) {
+	//run each test set, returning the total errors given
+	int total = 0, res = 0;
+
+	{
+		res = test_stack_basics();
+		if (res == 0) {
+			printf(TOY_CC_NOTICE "All good\n" TOY_CC_RESET);
+		}
+		total += res;
+	}
+
+	{
+		res = test_stack_stress();
+		if (res == 0) {
+			printf(TOY_CC_NOTICE "All good\n" TOY_CC_RESET);
+		}
+		total += res;
+	}
+
+	return total;
+}