feat: FlagEvalMetadata - add class

Signed-off-by: Nicklas Lundin <[email protected]>

Author: nicklasl

android/src/main/java/dev/openfeature/sdk/FlagEvaluationMetadata.kt

@@ -0,0 +1,61 @@
+package dev.openfeature.sdk
+
+class EvaluationMetadata internal constructor(private val values: Map<String, Any>) {
+
+    fun getString(key: String): String? = values[key] as? String
+
+    fun getBoolean(key: String): Boolean? = values[key] as? Boolean
+
+    fun getInt(key: String): Int? = values[key] as? Int
+
+    fun getDouble(key: String): Double? = values[key] as? Double
+
+    fun getAny(key: String): Any? = values[key]
+
+    companion object {
+        fun builder(): Builder {
+            return Builder()
+        }
+    }
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as EvaluationMetadata
+
+        return values == other.values
+    }
+
+    override fun hashCode(): Int {
+        return values.hashCode()
+    }
+}
+
+class Builder {
+    private val values: MutableMap<String, Any> = mutableMapOf()
+
+    fun putString(key: String, value: String): Builder {
+        values[key] = value
+        return this
+    }
+
+    fun putInt(key: String, value: Int): Builder {
+        values[key] = value
+        return this
+    }
+
+    fun putDouble(key: String, value: Double): Builder {
+        values[key] = value
+        return this
+    }
+
+    fun putBoolean(key: String, value: Boolean): Builder {
+        values[key] = value
+        return this
+    }
+
+    fun build(): EvaluationMetadata {
+        return EvaluationMetadata(values)
+    }
+}

android/src/test/java/dev/openfeature/sdk/EvaluationMetadataTest.kt

@@ -0,0 +1,41 @@
+package dev.openfeature.sdk
+
+import org.junit.Assert
+import org.junit.Test
+
+class EvaluationMetadataTest {
+
+    private val metadata = EvaluationMetadata.builder()
+        .putString("key1", "value1")
+        .putInt("key2", 42)
+        .putBoolean("key3", true)
+        .putDouble("key4", 2.71828)
+        .build()
+
+    @Test
+    fun testAddAndGet() {
+        Assert.assertEquals("value1", metadata.getString("key1"))
+        Assert.assertEquals(42, metadata.getInt("key2"))
+        Assert.assertEquals(true, metadata.getBoolean("key3"))
+        Assert.assertEquals(2.71828, metadata.getDouble("key4"))
+    }
+
+    @Test
+    fun testGetNonExistentKey() {
+        Assert.assertNull(metadata.getString("key5"))
+    }
+
+    @Test
+    fun testInvalidType() {
+        Assert.assertNull(metadata.getString("key2"))
+        Assert.assertNull(metadata.getInt("key3"))
+        Assert.assertNull(metadata.getBoolean("key4"))
+        Assert.assertNull(metadata.getDouble("key1"))
+    }
+
+    @Test
+    fun testGetAny() {
+        val any: Any? = metadata.getAny("key1")
+        Assert.assertEquals("value1", any as? String)
+    }
+}