Add npm test for ledger_data command.

test/declarative-suite.js

@@ -0,0 +1,57 @@
+/* global test, suite, suiteSetup, suiteTeardown */
+
+var lodash = require('lodash');
+var testutils = require('./testutils');
+var LedgerState = require('./ledger-state').LedgerState;
+var assert = require('assert-diff');
+
+var config = testutils.init_config();
+// We just use equal instead of strictEqual everywhere.
+assert.options.strict = true;
+
+function makeSuite (name, ledger_state, tests) {
+  suite(name, function () {
+    // build_(setup|teardown) utils functions set state on this context var.
+    var context = {};
+
+    // This runs only once
+    suiteSetup(function (done) {
+      var opts = {};
+      if (ledger_state.dump) {
+        opts.ledger_file = ledger_state.dump;
+      }
+      testutils.build_setup(opts).call(context, function () {
+        if (opts.ledger_file) {
+          done();
+        } else {
+          var ledger = context.ledger = new LedgerState(ledger_state,
+                                       assert, context.remote,
+                                       config);
+          // Run the ledger setup util. This compiles the declarative description
+          // into a series of transactions and executes them.
+          ledger.setup(lodash.noop/* logger */, function () {
+            done();
+          });
+        }
+      });
+    });
+
+    suiteTeardown(function (done) {
+      testutils.build_teardown().call(context, done);
+    });
+
+    lodash.forOwn(tests, function (func, name) {
+      test(name, function (done) {
+        var args = [context, context.ledger, context.remote, done];
+        while (args.length > func.length && args.length > 1) {
+          args.shift();
+        }
+        func.apply(this, args);
+      });
+    });
+  });
+}
+
+module.exports = {
+  makeSuite: makeSuite
+};