From 51dad49d8b479ecc537acad6499926387c2de129 Mon Sep 17 00:00:00 2001
From: paradust7 <102263465+paradust7@users.noreply.github.com>
Date: Sat, 7 May 2022 02:21:41 -0700
Subject: Unit tests for irrArray (#103)

---
 examples/AutomatedTest/test_array.cpp | 135 ++++++++++++++++++++++++++++++++++
 1 file changed, 135 insertions(+)
 create mode 100644 examples/AutomatedTest/test_array.cpp

(limited to 'examples/AutomatedTest/test_array.cpp')

diff --git a/examples/AutomatedTest/test_array.cpp b/examples/AutomatedTest/test_array.cpp
new file mode 100644
index 0000000..5ec55ee
--- /dev/null
+++ b/examples/AutomatedTest/test_array.cpp
@@ -0,0 +1,135 @@
+#include "irrArray.h"
+#include "test_helper.h"
+
+using namespace irr;
+using core::array;
+
+static void test_basics() {
+	array<int> v;
+	v.push_back(1);  // 1
+	v.push_front(2); // 2, 1
+	v.insert(4, 0);  // 4, 2, 1
+	v.insert(3, 1);  // 4, 3, 2, 1
+	v.insert(0, 4);  // 4, 3, 2, 1, 0
+	UASSERTEQ(v.size(), 5);
+	UASSERTEQ(v[0], 4);
+	UASSERTEQ(v[1], 3);
+	UASSERTEQ(v[2], 2);
+	UASSERTEQ(v[3], 1);
+	UASSERTEQ(v[4], 0);
+	array<int> w = v;
+	UASSERTEQ(w.size(), 5);
+	UASSERT(w == v);
+	w.clear();
+	UASSERTEQ(w.size(), 0);
+	UASSERTEQ(w.allocated_size(), 0);
+	UASSERT(w.empty());
+	w = v;
+	UASSERTEQ(w.size(), 5);
+	w.set_used(3);
+	UASSERTEQ(w.size(), 3);
+	UASSERTEQ(w[0], 4);
+	UASSERTEQ(w[1], 3);
+	UASSERTEQ(w[2], 2);
+	UASSERTEQ(w.getLast(), 2);
+	w.set_used(20);
+	UASSERTEQ(w.size(), 20);
+	w = v;
+	w.sort();
+	UASSERTEQ(w.size(), 5);
+	UASSERTEQ(w[0], 0);
+	UASSERTEQ(w[1], 1);
+	UASSERTEQ(w[2], 2);
+	UASSERTEQ(w[3], 3);
+	UASSERTEQ(w[4], 4);
+	w.erase(0);
+	UASSERTEQ(w.size(), 4);
+	UASSERTEQ(w[0], 1);
+	UASSERTEQ(w[1], 2);
+	UASSERTEQ(w[2], 3);
+	UASSERTEQ(w[3], 4);
+	w.erase(1, 2);
+	UASSERTEQ(w.size(), 2);
+	UASSERTEQ(w[0], 1);
+	UASSERTEQ(w[1], 4);
+	w.swap(v);
+	UASSERTEQ(w.size(), 5);
+	UASSERTEQ(v.size(), 2);
+}
+
+static void test_linear_searches() {
+	// Populate the array with 0, 1, 2, ..., 100, 100, 99, 98, 97, ..., 0
+	array<int> arr;
+	for (int i = 0; i <= 100; i++)
+		arr.push_back(i);
+	for (int i = 100; i >= 0; i--)
+		arr.push_back(i);
+	s32 end = arr.size() - 1;
+	for (int i = 0; i <= 100; i++) {
+		s32 index = arr.linear_reverse_search(i);
+		UASSERTEQ(index, end - i);
+	}
+	for (int i = 0; i <= 100; i++) {
+		s32 index = arr.linear_search(i);
+		UASSERTEQ(index, i);
+	}
+}
+
+static void test_binary_searches() {
+	const auto& values = { 3, 5, 1, 2, 5, 10, 19, 9, 7, 1, 2, 5, 8, 15 };
+	array<int> arr;
+	for (int value : values) {
+		arr.push_back(value);
+	}
+	// Test the const form first, it uses a linear search without sorting
+	const array<int> & carr = arr;
+	UASSERTEQ(carr.binary_search(20), -1);
+	UASSERTEQ(carr.binary_search(0), -1);
+	UASSERTEQ(carr.binary_search(1), 2);
+
+	// Sorted: 1, 1, 2, 2, 3, 5, 5, 5, 7, 8, 9, 10, 15, 19
+	UASSERTEQ(arr.binary_search(20), -1);
+	UASSERTEQ(arr.binary_search(0), -1);
+
+	for (int value : values) {
+		s32 i = arr.binary_search(value);
+		UASSERTNE(i, -1);
+		UASSERTEQ(arr[i], value);
+	}
+
+	s32 first, last;
+	first = arr.binary_search_multi(1, last);
+	UASSERTEQ(first, 0);
+	UASSERTEQ(last, 1);
+
+	first = arr.binary_search_multi(2, last);
+	UASSERTEQ(first, 2);
+	UASSERTEQ(last, 3);
+
+	first = arr.binary_search_multi(3, last);
+	UASSERTEQ(first, 4);
+	UASSERTEQ(last, 4);
+
+	first = arr.binary_search_multi(4, last);
+	UASSERTEQ(first, -1);
+
+	first = arr.binary_search_multi(5, last);
+	UASSERTEQ(first, 5);
+	UASSERTEQ(last, 7);
+
+	first = arr.binary_search_multi(7, last);
+	UASSERTEQ(first, 8);
+	UASSERTEQ(last, 8);
+
+	first = arr.binary_search_multi(19, last);
+	UASSERTEQ(first, 13);
+	UASSERTEQ(last, 13);
+}
+
+void test_irr_array()
+{
+	test_basics();
+	test_linear_searches();
+	test_binary_searches();
+	std::cout << "    test_irr_array PASSED" << std::endl;
+}
-- 
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