Write down first e2e script context test for v3.

examples/acceptance_tests/script_context/v3/validators/spend_1.ak

@@ -0,0 +1,69 @@
+use aiken/dict
+use aiken/transaction.{
+  InlineDatum, Input, Output, OutputReference, ScriptContext, Spend, Spending,
+}
+use aiken/transaction/credential.{Address, ScriptCredential}
+use aiken/transaction/value
+
+validator {
+  fn spend(_tmp1: Void, _tmp2: Void, ctx: ScriptContext) {
+    let void: Data = Void
+
+    expect
+      #"78ec148ea647cf9969446891af31939c5d57b275a2455706782c6183ef0b62f1" == ctx.transaction.id
+
+    expect
+      Spending(
+        OutputReference {
+          transaction_id: #"0000000000000000000000000000000000000000000000000000000000000000",
+          output_index: 0,
+        },
+        Some(void),
+      ) == ctx.info
+
+    trace @"inputs": ctx.transaction.inputs
+
+    expect [
+      Input {
+        output_reference: OutputReference { transaction_id, output_index: 0 },
+        output: Output {
+          address,
+          value: resolved_input_value,
+          datum: InlineDatum(_),
+          reference_script: None,
+        },
+      },
+    ] = ctx.transaction.inputs
+
+    expect
+      transaction_id == #"0000000000000000000000000000000000000000000000000000000000000000"
+
+    expect resolved_input_value == value.from_lovelace(1000000000)
+
+    expect Address {
+      payment_credential: ScriptCredential(_),
+      stake_credential: None,
+    } = address
+
+    expect [] = ctx.transaction.reference_inputs
+
+    expect [] = ctx.transaction.extra_signatories
+
+    expect 42 == ctx.transaction.fee
+
+    expect
+      [
+        Pair(Spend(
+          OutputReference {
+            transaction_id: #"0000000000000000000000000000000000000000000000000000000000000000",
+            output_index: 0,
+          },
+        ),
+        void),
+      ] == ctx.transaction.redeemers
+
+    expect [] == dict.to_pairs(ctx.transaction.datums)
+
+    True
+  }
+}