test(audience-sdk): extend TestFixtures with currency, casing, and scenario values

Adds:
- Currency code fixtures: UsdCurrency ("USD"), EurCurrency ("EUR"),
  used across Purchase / Resource typed-event tests
- Progression world fixture: ProgressionWorldTutorial ("tutorial"),
  three uses across TypedEventTests and ImmutableAudienceTests
- Exception fixture: ContextProviderBoomMessage ("boom"),
  for the ContextProvider sabotage test
- Disk-block sentinel: DiskBlockerContent ("blocker"),
  written to the queue directory path so creation fails
- DistributionPlatform mixed-case fixtures:
  DistributionPlatformSteamCased ("Steam"),
  DistributionPlatformSteamUppercase ("STEAM"),
  for Init's lowercase-normalisation test
- Application.platform fixture: PlatformWindows ("WindowsPlayer"),
  for the GameLaunch.Platform test
- Generic alias endpoint fixtures: GenericAliasFromId ("fromId"),
  GenericAliasToId ("toId"), GenericAliasFromShort ("from"),
  for Alias argument-validation tests where the value is filler

Migrates inline references in:
- Events/TypedEventTests (seven Purchase / Resource currency and
  Progression world fills)
- ImmutableAudienceTests (boom, USD x2, fromId/toId, from, tutorial,
  Steam, STEAM, WindowsPlayer)
- OfflineResilienceTests (blocker)

IdentityTypeTests "Steam" / "STEAM" left inline; the wire-format
casing fixtures stay self-contained inside that test until the
IdentityType wire-format extraction lands. MessagesTests "USD" /
"usd" left inline; the literals there appear inside expected error
strings being verified, so centralising would defeat the test's
own pinning.

Per the user's "everything random goes in a constant" stance.

Follow-up to SDK-272 (centralisation of duplicated literals).

Author: ImmutableJeffrey

src/Packages/Audience/Tests/Runtime/Events/TypedEventTests.cs

@@ -15,7 +15,7 @@ public void Progression_EventName_IsProgression()
         [Test]
         public void Progression_WithoutStatus_ThrowsOnToProperties()
         {
-            var evt = new Progression { World = "tutorial" };
+            var evt = new Progression { World = TestFixtures.ProgressionWorldTutorial };
 
             var ex = Assert.Throws<ArgumentException>(() => evt.ToProperties());
             Assert.That(ex!.Message, Does.Contain("Status"));
@@ -27,7 +27,7 @@ public void Progression_Complete_ProducesCorrectProperties()
             var evt = new Progression
             {
                 Status = ProgressionStatus.Complete,
-                World = "tutorial",
+                World = TestFixtures.ProgressionWorldTutorial,
                 Level = "1",
                 Score = 1500,
                 DurationSec = 120.5f
@@ -36,7 +36,7 @@ public void Progression_Complete_ProducesCorrectProperties()
             var props = evt.ToProperties();
 
             Assert.AreEqual(ProgressionStatus.Complete.ToLowercaseString(), props[EventPropertyKeys.Status]);
-            Assert.AreEqual("tutorial", props[EventPropertyKeys.World]);
+            Assert.AreEqual(TestFixtures.ProgressionWorldTutorial, props[EventPropertyKeys.World]);
             Assert.AreEqual("1", props[EventPropertyKeys.Level]);
             Assert.AreEqual(1500, props[EventPropertyKeys.Score]);
             Assert.AreEqual(120.5f, props[EventPropertyKeys.DurationSec]);
@@ -114,7 +114,7 @@ public void Purchase_ProducesCorrectProperties()
         {
             var evt = new Purchase
             {
-                Currency = "USD",
+                Currency = TestFixtures.UsdCurrency,
                 Value = 9.99m,
                 ItemId = TestFixtures.PurchaseItemId,
                 ItemName = TestFixtures.PurchaseItemName,
@@ -124,7 +124,7 @@ public void Purchase_ProducesCorrectProperties()
 
             var props = evt.ToProperties();
 
-            Assert.AreEqual("USD", props[EventPropertyKeys.Currency]);
+            Assert.AreEqual(TestFixtures.UsdCurrency, props[EventPropertyKeys.Currency]);
             Assert.AreEqual(9.99m, props[EventPropertyKeys.Value]);
             Assert.AreEqual(TestFixtures.PurchaseItemId, props[EventPropertyKeys.ItemId]);
             Assert.AreEqual(TestFixtures.PurchaseItemName, props[EventPropertyKeys.ItemName]);
@@ -135,7 +135,7 @@ public void Purchase_ProducesCorrectProperties()
         [Test]
         public void Purchase_OptionalFieldsOmitted_WhenNull()
         {
-            var props = new Purchase { Currency = "EUR", Value = 5.00m }.ToProperties();
+            var props = new Purchase { Currency = TestFixtures.EurCurrency, Value = 5.00m }.ToProperties();
 
             Assert.IsTrue(props.ContainsKey(EventPropertyKeys.Currency));
             Assert.IsTrue(props.ContainsKey(EventPropertyKeys.Value));
@@ -163,7 +163,7 @@ public void Purchase_WithoutCurrency_ThrowsOnToProperties()
         [Test]
         public void Purchase_WithoutValue_ThrowsOnToProperties()
         {
-            var evt = new Purchase { Currency = "USD" };
+            var evt = new Purchase { Currency = TestFixtures.UsdCurrency };
 
             var ex = Assert.Throws<ArgumentException>(() => evt.ToProperties());
             Assert.That(ex!.Message, Does.Contain("Value"));

src/Packages/Audience/Tests/Runtime/ImmutableAudienceTests.cs

@@ -231,7 +231,7 @@ public void ContextProvider_Set_MergesOnIdentifyPath()
         [Test]
         public void ContextProvider_ThrowingDelegate_SwallowsAndShipsBaseContext()
         {
-            ImmutableAudience.ContextProvider = () => throw new InvalidOperationException("boom");
+            ImmutableAudience.ContextProvider = () => throw new InvalidOperationException(TestFixtures.ContextProviderBoomMessage);
 
             ImmutableAudience.Init(MakeConfig());
             ImmutableAudience.Track(TestEventNames.UnitTestEvent);
@@ -319,7 +319,7 @@ public void Track_IEventMissingRequiredField_DropsWithWarn()
             {
                 // Purchase with no Value set: ToProperties throws; Track must
                 // catch, warn, and drop rather than ship an incomplete event.
-                Assert.DoesNotThrow(() => ImmutableAudience.Track(new Purchase { Currency = "USD" }));
+                Assert.DoesNotThrow(() => ImmutableAudience.Track(new Purchase { Currency = TestFixtures.UsdCurrency }));
                 // Assert the stable parts (event-type name and trailing "Dropping")
                 // so the test survives any change to the exception type or message.
                 Assert.That(lines, Has.Some.Contains(nameof(Purchase)));
@@ -408,7 +408,7 @@ public void Alias_InvalidIdentityTypeCast_Throws()
             var invalid = (IdentityType)999;
 
             Assert.Throws<ArgumentOutOfRangeException>(
-                () => ImmutableAudience.Alias("fromId", invalid, "toId", IdentityType.Steam),
+                () => ImmutableAudience.Alias(TestFixtures.GenericAliasFromId, invalid, TestFixtures.GenericAliasToId, IdentityType.Steam),
                 "invalid enum cast must throw so a broken alias call fails loud rather " +
                 "than shipping an event that cannot be matched for deletion");
         }
@@ -419,7 +419,7 @@ public void Alias_NullIds_DoesNotEnqueue()
             ImmutableAudience.Init(MakeConfig(ConsentLevel.Full));
 
             Assert.DoesNotThrow(() => ImmutableAudience.Alias(null, IdentityType.Passport, "to", IdentityType.Steam));
-            Assert.DoesNotThrow(() => ImmutableAudience.Alias("from", IdentityType.Passport, "", IdentityType.Steam));
+            Assert.DoesNotThrow(() => ImmutableAudience.Alias(TestFixtures.GenericAliasFromShort, IdentityType.Passport, "", IdentityType.Steam));
         }
 
         [Test]
@@ -581,7 +581,7 @@ public void Track_TypedProgression_WritesCorrectEventName()
             ImmutableAudience.Track(new Progression
             {
                 Status = ProgressionStatus.Complete,
-                World = "tutorial",
+                World = TestFixtures.ProgressionWorldTutorial,
                 Level = "1"
             });
             ImmutableAudience.Shutdown();
@@ -600,7 +600,7 @@ public void Track_TypedPurchase_WritesCorrectEventName()
 
             ImmutableAudience.Track(new Purchase
             {
-                Currency = "USD",
+                Currency = TestFixtures.UsdCurrency,
                 Value = 9.99m
             });
             ImmutableAudience.Shutdown();
@@ -1124,7 +1124,7 @@ public void Init_GameLaunch_IncludesDistributionPlatform()
         public void Init_LowercasesDistributionPlatform_WhenCallerPassesMixedCase()
         {
             var config = MakeConfig();
-            config.DistributionPlatform = "Steam";
+            config.DistributionPlatform = TestFixtures.DistributionPlatformSteamCased;
             ImmutableAudience.Init(config);
 
             Assert.AreEqual(DistributionPlatforms.Steam, config.DistributionPlatform,
@@ -1135,7 +1135,7 @@ public void Init_LowercasesDistributionPlatform_WhenCallerPassesMixedCase()
         public void Init_LowercasesDistributionPlatform_WhenCallerPassesAllUpperCase()
         {
             var config = MakeConfig();
-            config.DistributionPlatform = "STEAM";
+            config.DistributionPlatform = TestFixtures.DistributionPlatformSteamUppercase;
             ImmutableAudience.Init(config);
 
             Assert.AreEqual(DistributionPlatforms.Steam, config.DistributionPlatform);
@@ -1199,7 +1199,7 @@ public void Init_GameLaunch_IncludesLaunchContextProviderFields()
         {
             ImmutableAudience.LaunchContextProvider = () => new Dictionary<string, object>
             {
-                [GameLaunchPropertyKeys.Platform] = "WindowsPlayer",
+                [GameLaunchPropertyKeys.Platform] = TestFixtures.PlatformWindows,
                 [GameLaunchPropertyKeys.Version] = "1.2.3",
                 [GameLaunchPropertyKeys.BuildGuid] = "a1b2c3d4e5f6",
                 [GameLaunchPropertyKeys.UnityVersion] = "2022.3.20f1",

src/Packages/Audience/Tests/Runtime/OfflineResilienceTests.cs

@@ -64,7 +64,7 @@ private void BlockDiskWrites()
                 foreach (var f in Directory.GetFiles(queueDir, AudiencePaths.QueueGlob)) File.Delete(f);
                 Directory.Delete(queueDir);
             }
-            File.WriteAllText(queueDir, "blocker");
+            File.WriteAllText(queueDir, TestFixtures.DiskBlockerContent);
         }
 
         // -----------------------------------------------------------------

src/Packages/Audience/Tests/Runtime/TestFixtures.cs

@@ -66,5 +66,31 @@ internal static class TestFixtures
         internal const string GenericToId = "t";
         internal const string GenericFromType = "t1";
         internal const string GenericToType = "t2";
+
+        // ISO 4217 currency codes used by Purchase / Resource tests.
+        internal const string UsdCurrency = "USD";
+        internal const string EurCurrency = "EUR";
+
+        // Progression.World fixture (used in three typed-event tests).
+        internal const string ProgressionWorldTutorial = "tutorial";
+
+        // Exception message fixture for the ContextProvider sabotage test.
+        internal const string ContextProviderBoomMessage = "boom";
+
+        // File body that occupies the queue directory path so directory creation fails.
+        internal const string DiskBlockerContent = "blocker";
+
+        // DistributionPlatform mixed-case fixtures for Init's lowercase
+        // normalisation test.
+        internal const string DistributionPlatformSteamCased = "Steam";
+        internal const string DistributionPlatformSteamUppercase = "STEAM";
+
+        // Unity Application.platform string for the GameLaunch.Platform test.
+        internal const string PlatformWindows = "WindowsPlayer";
+
+        // Longer generic alias endpoint fixtures, for readability in Alias calls.
+        internal const string GenericAliasFromId = "fromId";
+        internal const string GenericAliasToId = "toId";
+        internal const string GenericAliasFromShort = "from";
     }
 }