Converting templates to Scriban

Author: ErikSchierboom

docs/GENERATORS.md

@@ -15,12 +15,10 @@ To generate a practice exercise's tests, the test generator:
 
 ### Step 1: read `canonical-data.json` file
 
-The test generator parses the test cases from the exercise's `canonical-data.json` using the [JSON.net library](https://www.newtonsoft.com/json).
+The test generator parses the test cases from the exercise's `canonical-data.json` using the [System.Text.Json namespace](https://learn.microsoft.com/en-us/dotnet/api/system.text.json).
 
 Since some canonical data uses nesting, the parsed test case includes an additional `path` field that contains the `description` properties of any parent elements, as well as the test case's own `description` property.
 
-Note: the JSON is parsed to an `ExpandoObject` instance, which makes dealing with dynamic data easier.
-
 ### Step 2: omit excluded tests from `tests.toml` file
 
 Each exercise has a `tests.toml` file, in which individual tests can be excluded/disabled.
@@ -44,7 +42,7 @@ Finally, the output of the rendered template is written to the exercise's test f
 
 ## Templates
 
-The templates are rendered using the [Handlebars.Net library](https://github.com/Handlebars-Net/Handlebars.Net), which supports [handlebars syntax](https://handlebarsjs.com/).
+The templates are rendered using the [Scriban library](https://github.com/scriban/scriban/).
 
 ## Command-line interface
 

exercises/practice/acronym/.meta/Generator.tpl

@@ -2,11 +2,11 @@ using Xunit;
 
 public class AcronymTests
 {
-    {{#test_cases}}
-    [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
-    public void {{test_method_name}}()
+    {{for testCase in testCases}}
+    [Fact{{if !for.first}}(Skip = "Remove this Skip property to run this test"){{end}}]
+    public void {{testCase.testMethodName}}()
     {
-        Assert.Equal({{lit expected}}, Acronym.Abbreviate({{lit input.phrase}}));
+        Assert.Equal({{testCase.expected | string.literal}}, Acronym.Abbreviate({{testCase.input.phrase | string.literal}}));
     }
-    {{/test_cases}}
+    {{end}}
 }

exercises/practice/affine-cipher/.meta/Generator.tpl

@@ -3,27 +3,27 @@ using Xunit;
 
 public class AffineCipherTests
 {
-    {{#test_cases_by_property.encode}}
-    [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
-    public void {{short_test_method_name}}()
+    {{for testCase in testCasesByProperty.encode}}
+    [Fact{{if !for.first}}(Skip = "Remove this Skip property to run this test"){{end}}]
+    public void {{testCase.shortTestMethodName}}()
     {
-        {{#if expected.error}}
-        Assert.Throws<ArgumentException>(() => AffineCipher.Encode({{lit input.phrase}}, {{input.key.a}}, {{input.key.b}}));
+        {{if testCase.expected.error}}
+        Assert.Throws<ArgumentException>(() => AffineCipher.Encode({{testCase.input.phrase | string.literal}}, {{testCase.input.key.a}}, {{testCase.input.key.b}}));
         {{else}}
-        Assert.Equal({{lit expected}}, AffineCipher.Encode({{lit input.phrase}}, {{input.key.a}}, {{input.key.b}}));
-        {{/if}}
+        Assert.Equal({{testCase.expected | string.literal}}, AffineCipher.Encode({{testCase.input.phrase | string.literal}}, {{testCase.input.key.a}}, {{testCase.input.key.b}}));
+        {{end}}
     }
-    {{/test_cases_by_property.encode}}
+    {{end}}
 
-    {{#test_cases_by_property.decode}}
+    {{for testCase in testCasesByProperty.decode}}
     [Fact(Skip = "Remove this Skip property to run this test")]
-    public void {{short_test_method_name}}()
+    public void {{testCase.shortTestMethodName}}()
     {
-        {{#if expected.error}}
-        Assert.Throws<ArgumentException>(() => AffineCipher.Decode({{lit input.phrase}}, {{input.key.a}}, {{input.key.b}}));
+        {{if testCase.expected.error}}
+        Assert.Throws<ArgumentException>(() => AffineCipher.Decode({{testCase.input.phrase | string.literal}}, {{testCase.input.key.a}}, {{testCase.input.key.b}}));
         {{else}}
-        Assert.Equal({{lit expected}}, AffineCipher.Decode({{lit input.phrase}}, {{input.key.a}}, {{input.key.b}}));
-        {{/if}}
+        Assert.Equal({{testCase.expected | string.literal}}, AffineCipher.Decode({{testCase.input.phrase}}, {{testCase.input.key.a}}, {{testCase.input.key.b}}));
+        {{end}}
     }
-    {{/test_cases_by_property.decode}}
+    {{end}}
 }

exercises/practice/affine-cipher/AffineCipherTests.cs

@@ -60,37 +60,37 @@ public void Encode_with_a_not_coprime_to_m()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Decode_exercism()
     {
-        Assert.Equal("exercism", AffineCipher.Decode("tytgn fjr", 3, 7));
+        Assert.Equal("exercism", AffineCipher.Decode(tytgn fjr, 3, 7));
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Decode_a_sentence()
     {
-        Assert.Equal("anobstacleisoftenasteppingstone", AffineCipher.Decode("qdwju nqcro muwhn odqun oppmd aunwd o", 19, 16));
+        Assert.Equal("anobstacleisoftenasteppingstone", AffineCipher.Decode(qdwju nqcro muwhn odqun oppmd aunwd o, 19, 16));
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Decode_numbers()
     {
-        Assert.Equal("testing123testing", AffineCipher.Decode("odpoz ub123 odpoz ub", 25, 7));
+        Assert.Equal("testing123testing", AffineCipher.Decode(odpoz ub123 odpoz ub, 25, 7));
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Decode_all_the_letters()
     {
-        Assert.Equal("thequickbrownfoxjumpsoverthelazydog", AffineCipher.Decode("swxtj npvyk lruol iejdc blaxk swxmh qzglf", 17, 33));
+        Assert.Equal("thequickbrownfoxjumpsoverthelazydog", AffineCipher.Decode(swxtj npvyk lruol iejdc blaxk swxmh qzglf, 17, 33));
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Decode_with_no_spaces_in_input()
     {
-        Assert.Equal("thequickbrownfoxjumpsoverthelazydog", AffineCipher.Decode("swxtjnpvyklruoliejdcblaxkswxmhqzglf", 17, 33));
+        Assert.Equal("thequickbrownfoxjumpsoverthelazydog", AffineCipher.Decode(swxtjnpvyklruoliejdcblaxkswxmhqzglf, 17, 33));
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Decode_with_too_many_spaces()
     {
-        Assert.Equal("jollygreengiant", AffineCipher.Decode("vszzm    cly   yd cg    qdp", 15, 16));
+        Assert.Equal("jollygreengiant", AffineCipher.Decode(vszzm cly yd cg qdp, 15, 16));
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]

exercises/practice/allergies/.meta/Generator.tpl

@@ -2,26 +2,30 @@ using Xunit;
 
 public class AllergiesTests
 {
-    {{#test_cases_by_property.allergicTo}}
-    [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
-    public void {{test_method_name}}()
+    {{for testCase in testCasesByProperty.allergicTo}}
+    [Fact{{if !for.first}}(Skip = "Remove this Skip property to run this test"){{end}}]
+    public void {{testCase.testMethodName}}()
     {
-        var sut = new Allergies({{input.score}});
-        Assert.{{expected}}(sut.IsAllergicTo(Allergen.{{Capitalize input.item}}));
+        var sut = new Allergies({{testCase.input.score}});
+        Assert.{{testCase.expected ? "True" : "False"}}(sut.IsAllergicTo({{testCase.input.item | enum type: "Allergen"}}));
     }
-    {{/test_cases_by_property.allergicTo}}
+    {{end}}
 
-    {{#test_cases_by_property.list}}
+    {{for testCase in testCasesByProperty.list}}
     [Fact(Skip = "Remove this Skip property to run this test")]
-    public void {{test_method_name}}()
+    public void {{testCase.testMethodName}}()
     {
-        var sut = new Allergies({{input.score}});
-        {{#isempty expected}}
+        var sut = new Allergies({{testCase.input.score}});
+        {{if testCase.expected.empty?}}
         Assert.Empty(sut.List());
         {{else}}
-        Allergen[] expected = [{{#each ../expected}}Allergen.{{Capitalize .}}{{#unless @last}},{{/unless}}{{/each}}];
+        Allergen[] expected = [
+            {{for expected in testCase.expected}}        
+                {{testCase.expected | enum type: "Allergen"}}{{if !for.last}},{{end}}
+            {{end}}
+        ];
         Assert.Equal(expected, sut.List());
-        {{/isempty}}
+        {{end}}
     }
-    {{/test_cases_by_property.list}}
+    {{end}}    
 }

exercises/practice/allergies/AllergiesTests.cs

@@ -293,71 +293,71 @@ public void List_when_no_allergies()
     public void List_when_just_eggs()
     {
         var sut = new Allergies(1);
-        Allergen[] expected = [Allergen.Eggs];
+        Allergen[] expected = [Allergen.["eggs"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_just_peanuts()
     {
         var sut = new Allergies(2);
-        Allergen[] expected = [Allergen.Peanuts];
+        Allergen[] expected = [Allergen.["peanuts"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_just_strawberries()
     {
         var sut = new Allergies(8);
-        Allergen[] expected = [Allergen.Strawberries];
+        Allergen[] expected = [Allergen.["strawberries"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_eggs_and_peanuts()
     {
         var sut = new Allergies(3);
-        Allergen[] expected = [Allergen.Eggs, Allergen.Peanuts];
+        Allergen[] expected = [Allergen.["eggs", "peanuts"], Allergen.["eggs", "peanuts"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_more_than_eggs_but_not_peanuts()
     {
         var sut = new Allergies(5);
-        Allergen[] expected = [Allergen.Eggs, Allergen.Shellfish];
+        Allergen[] expected = [Allergen.["eggs", "shellfish"], Allergen.["eggs", "shellfish"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_lots_of_stuff()
     {
         var sut = new Allergies(248);
-        Allergen[] expected = [Allergen.Strawberries, Allergen.Tomatoes, Allergen.Chocolate, Allergen.Pollen, Allergen.Cats];
+        Allergen[] expected = [Allergen.["strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["strawberries", "tomatoes", "chocolate", "pollen", "cats"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_everything()
     {
         var sut = new Allergies(255);
-        Allergen[] expected = [Allergen.Eggs, Allergen.Peanuts, Allergen.Shellfish, Allergen.Strawberries, Allergen.Tomatoes, Allergen.Chocolate, Allergen.Pollen, Allergen.Cats];
+        Allergen[] expected = [Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "peanuts", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_no_allergen_score_parts()
     {
         var sut = new Allergies(509);
-        Allergen[] expected = [Allergen.Eggs, Allergen.Shellfish, Allergen.Strawberries, Allergen.Tomatoes, Allergen.Chocolate, Allergen.Pollen, Allergen.Cats];
+        Allergen[] expected = [Allergen.["eggs", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"], Allergen.["eggs", "shellfish", "strawberries", "tomatoes", "chocolate", "pollen", "cats"]];
         Assert.Equal(expected, sut.List());
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void List_when_no_allergen_score_parts_without_highest_valid_score()
     {
         var sut = new Allergies(257);
-        Allergen[] expected = [Allergen.Eggs];
+        Allergen[] expected = [Allergen.["eggs"]];
         Assert.Equal(expected, sut.List());
     }
 }

exercises/practice/darts/.meta/Generator.tpl

@@ -2,11 +2,11 @@ using Xunit;
 
 public class DartsTests
 {
-    {{#test_cases}}
-    [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
-    public void {{test_method_name}}()
+    {{for testCase in testCases}}
+    [Fact{{if !for.first}}(Skip = "Remove this Skip property to run this test"){{end}}]
+    public void {{testCase.testMethodName}}()
     {
-        Assert.Equal({{expected}}, Darts.Score({{input.x}}, {{input.y}}));
+        Assert.Equal({{testCase.expected}}, Darts.Score({{testCase.input.x}}, {{testCase.input.y}}));
     }
-    {{/test_cases}}
+    {{end}}
 }

exercises/practice/darts/DartsTests.cs

@@ -65,7 +65,7 @@ public void Just_outside_the_middle_circle()
     [Fact(Skip = "Remove this Skip property to run this test")]
     public void Just_within_the_outer_circle()
     {
-        Assert.Equal(1, Darts.Score(-7, 7));
+        Assert.Equal(1, Darts.Score(-7.0, 7.0));
     }
 
     [Fact(Skip = "Remove this Skip property to run this test")]

exercises/practice/difference-of-squares/.meta/Generator.tpl

@@ -2,27 +2,11 @@ using Xunit;
 
 public class DifferenceOfSquaresTests
 {
-    {{#test_cases_by_property.squareOfSum}}
-    [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
-    public void {{short_test_method_name}}()
+    {{for testCase in testCases}}
+    [Fact{{if !for.first}}(Skip = "Remove this Skip property to run this test"){{end}}]
+    public void {{testCase.shortTestMethodName}}()
     {
-        Assert.Equal({{expected}}, DifferenceOfSquares.CalculateSquareOfSum({{input.number}}));
+        Assert.Equal({{testCase.expected}}, DifferenceOfSquares.Calculate{{testCase.property | string.capitalize}}({{testCase.input.number}}));
     }
-    {{/test_cases_by_property.squareOfSum}}
-
-    {{#test_cases_by_property.sumOfSquares}}
-    [Fact(Skip = "Remove this Skip property to run this test")]
-    public void {{short_test_method_name}}()
-    {
-        Assert.Equal({{expected}}, DifferenceOfSquares.CalculateSumOfSquares({{input.number}}));
-    }
-    {{/test_cases_by_property.sumOfSquares}}
-
-    {{#test_cases_by_property.differenceOfSquares}}
-    [Fact(Skip = "Remove this Skip property to run this test")]
-    public void {{short_test_method_name}}()
-    {
-        Assert.Equal({{expected}}, DifferenceOfSquares.CalculateDifferenceOfSquares({{input.number}}));
-    }
-    {{/test_cases_by_property.differenceOfSquares}}
+    {{end}}
 }

exercises/practice/eliuds-eggs/.meta/Generator.tpl

@@ -2,11 +2,11 @@ using Xunit;
 
 public class EliudsEggsTests
 {
-    {{#test_cases}}
-    [Fact{{#unless @first}}(Skip = "Remove this Skip property to run this test"){{/unless}}]
-    public void {{test_method_name}}()
+    {{for testCase in testCases}}
+    [Fact{{if !for.first}}(Skip = "Remove this Skip property to run this test"){{end}}]
+    public void {{testCase.testMethodName}}()
     {
-        Assert.Equal({{expected}}, EliudsEggs.EggCount({{input.number}}));
+        Assert.Equal({{testCase.expected}}, EliudsEggs.EggCount({{testCase.input.number}}));
     }
-    {{/test_cases}}
+    {{end}}
 }