添加项目文件。

UnitTestDemo.sln

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+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
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+EndProject
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+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
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+		{AC61644F-EC83-47F1-9B52-E0A45B5297A4}.Debug|x64.Build.0 = Debug|x64
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+		{AC61644F-EC83-47F1-9B52-E0A45B5297A4}.Debug|x86.Build.0 = Debug|Win32
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UnitTestDemo/.opencppcov/UnitTestDemo/Debug_x64.json

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UnitTestDemo/MathLibrary.cpp

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+#include "pch.h"
+#include "MathLibrary.h"
+double MathLibrary::Divide(double a, double b) {
+    if (b != 0) return a / b;
+    return 0.0;
+}
+
+bool MathLibrary::IsPositive(int n) {
+    return n >= 0;
+}
+
+bool MathLibrary::CheckRange(int a, int b) {
+    return (a > 0) && (b < 10);
+}
+
+double MathLibrary::CalculateDiscount(int age, bool isMember) {
+    if (age < 18)
+        return isMember ? 0.25 : 0.20;
+    else
+        return isMember ? 0.15 : 0.10;
+}

UnitTestDemo/MathLibrary.h

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+#pragma once
+
+class MathLibrary
+{
+public:
+    static double Divide(double a, double b);
+    static bool IsPositive(int n);
+    static bool CheckRange(int a, int b);
+    static double CalculateDiscount(int age, bool isMember);
+
+};
+
+int myfunc(int a, int b);

UnitTestDemo/UnitTestDemo.cpp

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+#include "pch.h"
+#include "CppUnitTest.h"
+#include "MathLibrary.h"
+
+using namespace Microsoft::VisualStudio::CppUnitTestFramework;
+
+namespace UnitTestDemo
+{
+	TEST_CLASS(UnitTestDemo)
+	{
+	public:
+
+		// 语句覆盖
+		TEST_METHOD(Divide_ZeroDivisor1) { Assert::AreEqual(0.0, MathLibrary::Divide(4, 0)); }
+		TEST_METHOD(Divide_ZeroDivisor2) { Assert::AreEqual(0.0, MathLibrary::Divide(4, 0)); }
+
+		// 分支覆盖
+		TEST_METHOD(IsPositive_Positive1) { Assert::IsTrue(MathLibrary::IsPositive(5)); }
+		TEST_METHOD(IsPositive_Negative2) { Assert::IsFalse(MathLibrary::IsPositive(-5)); }
+
+		// 条件覆盖
+		TEST_METHOD(CheckRange_BothTrue1) { Assert::IsTrue(MathLibrary::CheckRange(5, 5)); }
+		TEST_METHOD(CheckRange_FirstFalse2) { Assert::IsFalse(MathLibrary::CheckRange(-5, 5)); }
+		TEST_METHOD(CheckRange_SecondFalse3) { Assert::IsFalse(MathLibrary::CheckRange(5, 15)); }
+
+		// 路径覆盖
+		TEST_METHOD(Discount_TeenMember1) { Assert::AreEqual(0.25, MathLibrary::CalculateDiscount(15, true)); }
+		TEST_METHOD(Discount_TeenNonMember2) { Assert::AreEqual(0.20, MathLibrary::CalculateDiscount(15, false)); }
+		TEST_METHOD(Discount_AdultMember3) { Assert::AreEqual(0.15, MathLibrary::CalculateDiscount(20, true)); }
+		TEST_METHOD(Discount_AdultNonMember4) { Assert::AreEqual(0.10, MathLibrary::CalculateDiscount(20, false)); }
+
+
+	};
+}

UnitTestDemo/UnitTestDemo.vcxproj

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UnitTestDemo/pch.cpp

@@ -0,0 +1,5 @@
+// pch.cpp: 与预编译标头对应的源文件
+
+#include "pch.h"
+
+// 当使用预编译的头时，需要使用此源文件，编译才能成功。

UnitTestDemo/pch.h

@@ -0,0 +1,12 @@
+// pch.h: 这是预编译标头文件。
+// 下方列出的文件仅编译一次，提高了将来生成的生成性能。
+// 这还将影响 IntelliSense 性能，包括代码完成和许多代码浏览功能。
+// 但是，如果此处列出的文件中的任何一个在生成之间有更新，它们全部都将被重新编译。
+// 请勿在此处添加要频繁更新的文件，这将使得性能优势无效。
+
+#ifndef PCH_H
+#define PCH_H
+
+// 添加要在此处预编译的标头
+
+#endif //PCH_H