Fix unitest build issue

Author: Jack251970

Flow.Launcher.Infrastructure/StringMatcher.cs

@@ -19,6 +19,12 @@ public StringMatcher()
             _alphabet = Ioc.Default.GetRequiredService<IAlphabet>();
         }
 
+        // This is a workaround to allow unit tests to set the instance
+        public StringMatcher(IAlphabet alphabet)
+        {
+            _alphabet = alphabet;
+        }
+
         public static StringMatcher Instance { get; internal set; }
 
         public static MatchResult FuzzySearch(string query, string stringToCompare)

Flow.Launcher.Test/FuzzyMatcherTest.cs

@@ -21,6 +21,8 @@ public class FuzzyMatcherTest
         private const string MicrosoftSqlServerManagementStudio = "Microsoft SQL Server Management Studio";
         private const string VisualStudioCode = "Visual Studio Code";
 
+        private readonly IAlphabet alphabet = null;
+
         public List<string> GetSearchStrings()
             => new List<string>
             {
@@ -59,7 +61,7 @@ public void MatchTest()
             };
 
             var results = new List<Result>();
-            var matcher = new StringMatcher();
+            var matcher = new StringMatcher(alphabet);
             foreach (var str in sources)
             {
                 results.Add(new Result
@@ -81,7 +83,7 @@ public void MatchTest()
         public void WhenNotAllCharactersFoundInSearchString_ThenShouldReturnZeroScore(string searchString)
         {
             var compareString = "Can have rum only in my glass";
-            var matcher = new StringMatcher();
+            var matcher = new StringMatcher(alphabet);
             var scoreResult = matcher.FuzzyMatch(searchString, compareString).RawScore;
 
             Assert.True(scoreResult == 0);
@@ -97,7 +99,7 @@ public void GivenQueryString_WhenAppliedPrecisionFiltering_ThenShouldReturnGreat
             string searchTerm)
         {
             var results = new List<Result>();
-            var matcher = new StringMatcher();
+            var matcher = new StringMatcher(alphabet);
             foreach (var str in GetSearchStrings())
             {
                 results.Add(new Result
@@ -147,7 +149,7 @@ public void WhenGivenQueryString_ThenShouldReturn_TheDesiredScoring(
             string queryString, string compareString, int expectedScore)
         {
             // When, Given
-            var matcher = new StringMatcher {UserSettingSearchPrecision = SearchPrecisionScore.Regular};
+            var matcher = new StringMatcher(alphabet) {UserSettingSearchPrecision = SearchPrecisionScore.Regular};
             var rawScore = matcher.FuzzyMatch(queryString, compareString).RawScore;
 
             // Should
@@ -181,7 +183,7 @@ public void WhenGivenDesiredPrecision_ThenShouldReturn_AllResultsGreaterOrEqual(
             bool expectedPrecisionResult)
         {
             // When            
-            var matcher = new StringMatcher {UserSettingSearchPrecision = expectedPrecisionScore};
+            var matcher = new StringMatcher(alphabet) {UserSettingSearchPrecision = expectedPrecisionScore};
 
             // Given
             var matchResult = matcher.FuzzyMatch(queryString, compareString);
@@ -232,7 +234,7 @@ public void WhenGivenQuery_ShouldReturnResults_ContainingAllQuerySubstrings(
             bool expectedPrecisionResult)
         {
             // When
-            var matcher = new StringMatcher {UserSettingSearchPrecision = expectedPrecisionScore};
+            var matcher = new StringMatcher(alphabet) {UserSettingSearchPrecision = expectedPrecisionScore};
 
             // Given
             var matchResult = matcher.FuzzyMatch(queryString, compareString);
@@ -260,7 +262,7 @@ public void WhenGivenAQuery_Scoring_ShouldGiveMoreWeightToStartOfNewWord(
             string queryString, string compareString1, string compareString2)
         {
             // When
-            var matcher = new StringMatcher {UserSettingSearchPrecision = SearchPrecisionScore.Regular};
+            var matcher = new StringMatcher(alphabet) {UserSettingSearchPrecision = SearchPrecisionScore.Regular};
 
             // Given
             var compareString1Result = matcher.FuzzyMatch(queryString, compareString1);
@@ -293,7 +295,7 @@ public void WhenGivenTwoStrings_Scoring_ShouldGiveMoreWeightToTheStringCloserToI
             string queryString, string compareString1, string compareString2)
         {
             // When
-            var matcher = new StringMatcher { UserSettingSearchPrecision = SearchPrecisionScore.Regular };
+            var matcher = new StringMatcher(alphabet) { UserSettingSearchPrecision = SearchPrecisionScore.Regular };
 
             // Given
             var compareString1Result = matcher.FuzzyMatch(queryString, compareString1);
@@ -323,7 +325,7 @@ public void WhenMultipleResults_ExactMatchingResult_ShouldHaveGreatestScore(
             string secondName, string secondDescription, string secondExecutableName)
         {
             // Act
-            var matcher = new StringMatcher();
+            var matcher = new StringMatcher(alphabet);
             var firstNameMatch = matcher.FuzzyMatch(queryString, firstName).RawScore;
             var firstDescriptionMatch = matcher.FuzzyMatch(queryString, firstDescription).RawScore;
             var firstExecutableNameMatch = matcher.FuzzyMatch(queryString, firstExecutableName).RawScore;
@@ -358,7 +360,7 @@ public void WhenMultipleResults_ExactMatchingResult_ShouldHaveGreatestScore(
         public void WhenGivenAnAcronymQuery_ShouldReturnAcronymScore(string queryString, string compareString,
             int desiredScore)
         {
-            var matcher = new StringMatcher();
+            var matcher = new StringMatcher(alphabet);
             var score = matcher.FuzzyMatch(queryString, compareString).Score;
             Assert.IsTrue(score == desiredScore,
                 $@"Query: ""{queryString}""