Convert presets preconditions to use expressions

test/mongodb-functions.ts

@@ -0,0 +1,55 @@
+import ava from "ava";
+import * as mongodbFunctions from "../lib/mongodb-functions";
+import { stringify } from "../lib/common/expression-parser";
+
+ava("mongoQueryToFilter", t => {
+  const tests = [
+    [{}, "true"],
+    [{ test: "test" }, 'test = "test"'],
+    [{ test: { $eq: "test" } }, 'test = "test"'],
+    [{ test: { $ne: "test" } }, 'test <> "test"'],
+    [{ test: { $gte: "test" } }, 'test >= "test"'],
+    [{ "Tags.test": true }, "Tags.test IS NOT NULL"],
+    [{ "Tags.test": false }, "Tags.test IS NULL"],
+    [{ "Tags.test": { $exists: true } }, "Tags.test IS NOT NULL"],
+    [{ "Tags.test": { $exists: false } }, "Tags.test IS NULL"],
+    [{ "Tags.test": { $ne: true } }, "Tags.test IS NULL"],
+    [{ "Tags.test": { $ne: false } }, "Tags.test IS NOT NULL"],
+    [{ _tags: "test" }, "Tags.test IS NOT NULL"],
+    [{ _tags: { $ne: "test" } }, "Tags.test IS NULL"],
+    [
+      { $and: [{ test: "test" }, { test: { $ne: "test" } }] },
+      'test = "test" AND test <> "test"'
+    ],
+    [{ test: "test", test2: "test2" }, 'test = "test" AND test2 = "test2"'],
+    [
+      { $or: [{ test: "test" }, { test: { $ne: "test" } }] },
+      'test = "test" OR test <> "test"'
+    ],
+    [
+      { test: { $gte: "test1", $ne: "test2" } },
+      'test >= "test1" AND test <> "test2"'
+    ]
+  ];
+
+  const shouldFailTests = [
+    [{ test: { $gee: "test" } }, "Operator $gee not supported"],
+    [{ test: [] }, "Invalid type"],
+    [{ "Tags.test": { $eq: true } }, "Invalid tag query"],
+    [{ _tags: [] }, "Invalid type"],
+    [{ _tags: { $eq: "test" } }, "Invalid tag query"],
+    [{ $nor: [] }, "Operator $nor not supported"]
+  ];
+
+  t.plan(tests.length + 2 * shouldFailTests.length);
+  for (const test of tests)
+    t.is(stringify(mongodbFunctions.mongoQueryToFilter(test[0])), test[1]);
+
+  for (const test of shouldFailTests) {
+    const func = (): void => {
+      mongodbFunctions.mongoQueryToFilter(test[0]);
+    };
+    const error = t.throws(func, Error);
+    t.is(error.message, test[1]);
+  }
+});