test: Improve test coverage, organization, and fix partial Bool switch coverage

.github/workflows/swift.yml

@@ -0,0 +1,42 @@
+# This workflow will build a Swift project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-swift
+
+name: Swift `build` & `test`
+
+permissions:
+  contents: read
+
+on:
+  push:
+    branches: [ "main" ]
+    paths-ignore:
+      - '**/*.md'
+  pull_request:
+    paths-ignore:
+      - '**/*.md'
+
+jobs:
+  build-and-test:
+    runs-on: macos-latest
+    timeout-minutes: 20
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Show Swift version
+        run: swift --version
+
+      - name: Cache SwiftPM dependencies
+        uses: actions/cache@v4
+        with:
+          path: .build
+          key: ${{ runner.os }}-swiftpm-${{ hashFiles('Package.resolved') }}
+          restore-keys: |
+            ${{ runner.os }}-swiftpm-
+
+      - name: Build
+        run: swift build --configuration debug
+
+      - name: Run tests
+        run: swift test --configuration debug --parallel --verbose

.markdownlint.json

@@ -0,0 +1,11 @@
+{
+  "default": true,
+  "MD012": false,
+  "MD013": false,
+  "MD024": {
+    "siblings_only": true
+  },
+  "MD033": false,
+  "MD041": false,
+  "MD060": false
+}

CHANGELOG.md

@@ -10,6 +10,7 @@
 ### 🐛 Fixes
 
 * fixed optional types not detected with `valueCoder` strategy ([#141](https://github.com/SwiftyLab/MetaCodable/issues/141)) ([5873c3e](https://github.com/SwiftyLab/MetaCodable/commit/5873c3e33ab98e61c06304bfc2a2c93ab199d65d))
+* removed unreachable `default` case warnings for `Bool` type switches in macro-generated code
 
 ## [1.5.0](https://github.com/SwiftyLab/MetaCodable/compare/v1.4.0...v1.5.0) (2025-07-08)
 

README.md

@@ -1,5 +1,6 @@
 # MetaCodable
 
+[![Swift `build` & `test`](https://github.com/qizh/MetaCodable/actions/workflows/swift.yml/badge.svg?branch=tests%2Fimprove%2Fcoverage%2F30-01-26)](https://github.com/qizh/MetaCodable/actions/workflows/swift.yml)
 [![API Docs](http://img.shields.io/badge/Read_the-docs-2196f3.svg)](https://swiftpackageindex.com/SwiftyLab/MetaCodable/documentation/metacodable)
 [![Swift Package Manager Compatible](https://img.shields.io/github/v/tag/SwiftyLab/MetaCodable?label=SPM&color=orange)](https://badge.fury.io/gh/SwiftyLab%2FMetaCodable)
 [![CocoaPods Compatible](https://img.shields.io/cocoapods/v/MetaCodable.svg?label=CocoaPods&color=C90005)](https://badge.fury.io/co/MetaCodable)

Tests/MetaCodableTests/AccessModifierTests.swift

@@ -4,14 +4,16 @@ import Testing
 
 @testable import PluginCore
 
+@Suite("Access Modifier Tests")
 struct AccessModifierTests {
+    @Suite("Access Modifier - Open")
     struct Open {
         @Codable
         open class SomeCodable {
             let value: String
         }
 
-        @Test
+        @Test("Generates @Codable conformance for class with 'open' access", .tags(.accessModifiers, .classes, .codable, .decoding, .encoding, .enums, .macroExpansion))
         func expansion() throws {
             assertMacroExpansion(
                 """
@@ -49,7 +51,7 @@ struct AccessModifierTests {
             )
         }
 
-        @Test
+        @Test("Decodes class from JSON successfully", .tags(.accessModifiers, .classes, .decoding))
         func openClassDecodingOnly() throws {
             // Open class doesn't have memberwise init, only decoder init
             let jsonStr = """
@@ -63,7 +65,7 @@ struct AccessModifierTests {
             #expect(decoded.value == "open_test")
         }
 
-        @Test
+        @Test("Decodes from JSON successfully", .tags(.accessModifiers, .decoding))
         func openClassFromJSON() throws {
             let jsonStr = """
                 {
@@ -77,14 +79,15 @@ struct AccessModifierTests {
         }
     }
 
+    @Suite("Access Modifier - Public")
     struct Public {
         @Codable
         @MemberInit
         public struct SomeCodable {
             let value: String
         }
 
-        @Test
+        @Test("Generates macro expansion with @Codable for struct with 'public' access", .tags(.accessModifiers, .codable, .decoding, .encoding, .enums, .macroExpansion, .memberInit, .structs))
         func expansion() throws {
             assertMacroExpansion(
                 """
@@ -127,7 +130,7 @@ struct AccessModifierTests {
             )
         }
 
-        @Test
+        @Test("Encodes and decodes successfully", .tags(.accessModifiers, .decoding, .encoding))
         func publicStructDecodingAndEncoding() throws {
             let original = SomeCodable(value: "public_test")
             let encoded = try JSONEncoder().encode(original)
@@ -136,7 +139,7 @@ struct AccessModifierTests {
             #expect(decoded.value == "public_test")
         }
 
-        @Test
+        @Test("Decodes from JSON successfully (AccessModifierTests #1)", .tags(.accessModifiers, .decoding))
         func publicStructFromJSON() throws {
             let jsonStr = """
                 {
@@ -150,14 +153,15 @@ struct AccessModifierTests {
         }
     }
 
+    @Suite("Access Modifier - Package")
     struct Package {
         @Codable
         @MemberInit
         package struct SomeCodable {
             let value: String
         }
 
-        @Test
+        @Test("Generates macro expansion with @Codable for struct", .tags(.accessModifiers, .codable, .decoding, .encoding, .enums, .macroExpansion, .memberInit, .structs))
         func expansion() throws {
             assertMacroExpansion(
                 """
@@ -201,6 +205,7 @@ struct AccessModifierTests {
         }
     }
 
+    @Suite("Access Modifier - Others")
     struct Others {
         struct Internal {
             @Codable

Tests/MetaCodableTests/Attributes/CodedByTests.swift

@@ -2,8 +2,9 @@ import Testing
 
 @testable import PluginCore
 
+@Suite("Coded By Tests")
 struct CodedByTests {
-    @Test
+    @Test("Reports error for @CodedBy misuse", .tags(.codedBy, .errorHandling, .macroExpansion, .structs))
     func misuseOnNonVariableDeclaration() throws {
         assertMacroExpansion(
             """
@@ -34,7 +35,7 @@ struct CodedByTests {
         )
     }
 
-    @Test
+    @Test("Reports error for @CodedBy misuse (CodedByTests #1)", .tags(.codedBy, .errorHandling, .macroExpansion, .structs))
     func misuseOnStaticVariable() throws {
         assertMacroExpansion(
             """
@@ -63,7 +64,7 @@ struct CodedByTests {
         )
     }
 
-    @Test
+    @Test("Reports error when @CodedBy is applied multiple times", .tags(.codedBy, .errorHandling, .macroExpansion, .structs))
     func duplicatedMisuse() throws {
         assertMacroExpansion(
             """

Tests/MetaCodableTests/Attributes/DefaultTests.swift

@@ -4,8 +4,9 @@ import Testing
 
 @testable import PluginCore
 
+@Suite("Default Tests")
 struct DefaultTests {
-    @Test
+    @Test("Reports error for @Default misuse", .tags(.default, .errorHandling, .macroExpansion, .structs))
     func misuseOnNonVariableDeclaration() throws {
         assertMacroExpansion(
             """
@@ -36,7 +37,7 @@ struct DefaultTests {
         )
     }
 
-    @Test
+    @Test("Reports error for @Default misuse (DefaultTests #1)", .tags(.default, .errorHandling, .macroExpansion, .structs))
     func misuseOnStaticVariable() throws {
         assertMacroExpansion(
             """
@@ -65,7 +66,7 @@ struct DefaultTests {
         )
     }
 
-    @Test
+    @Test("Reports error when @Default is applied multiple times", .tags(.default, .errorHandling, .macroExpansion, .structs))
     func duplicatedMisuse() throws {
         assertMacroExpansion(
             """
@@ -104,6 +105,7 @@ struct DefaultTests {
         )
     }
 
+    @Suite("Default - Default Value Behavior")
     struct DefaultValueBehavior {
         @Codable
         struct SomeCodable {
@@ -113,7 +115,7 @@ struct DefaultTests {
             let number: Int
         }
 
-        @Test
+        @Test("Decodes from JSON successfully (DefaultTests #2)", .tags(.decoding, .default))
         func defaultValueUsage() throws {
             // Test with missing keys in JSON
             let jsonStr = "{}"
@@ -124,7 +126,7 @@ struct DefaultTests {
             #expect(decoded.number == 42)
         }
 
-        @Test
+        @Test("Decodes from JSON successfully (DefaultTests #3)", .tags(.decoding, .default))
         func overrideDefaultValues() throws {
             // Test with provided values in JSON
             let jsonStr = """
@@ -140,7 +142,7 @@ struct DefaultTests {
             #expect(decoded.number == 100)
         }
 
-        @Test
+        @Test("Encodes and decodes successfully (DefaultTests #1)", .tags(.decoding, .default, .encoding))
         func encodingWithDefaults() throws {
             let original = SomeCodable(value: "test", number: 99)
             let encoded = try JSONEncoder().encode(original)