Avoid analyzing excluded language files for line counting

This change passes in a list of file types to the line counting
analysis. These are the languages for the databases being analyzed.
Line count analysis is restricted to these files.

lib/count-loc.test.js

@@ -0,0 +1,51 @@
+"use strict";
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const path = __importStar(require("path"));
+const ava_1 = __importDefault(require("ava"));
+const count_loc_1 = require("./count-loc");
+const logging_1 = require("./logging");
+const testing_utils_1 = require("./testing-utils");
+testing_utils_1.setupTests(ava_1.default);
+ava_1.default("ensure lines of code works for cpp and js", async (t) => {
+    const results = await count_loc_1.countLoc(path.join(__dirname, "../tests/multi-language-repo"), [], [], ["cpp", "js"], logging_1.getRunnerLogger(true));
+    t.deepEqual(results, {
+        cpp: 6,
+        js: 3,
+    });
+});
+ava_1.default("ensure lines of code can handle undefined language", async (t) => {
+    const results = await count_loc_1.countLoc(path.join(__dirname, "../tests/multi-language-repo"), [], [], ["rb", "py", "hucairz"], logging_1.getRunnerLogger(true));
+    t.deepEqual(results, {
+        rb: 6,
+        py: 5,
+    });
+});
+ava_1.default("ensure lines of code can handle empty languages", async (t) => {
+    const results = await count_loc_1.countLoc(path.join(__dirname, "../tests/multi-language-repo"), [], [], [], logging_1.getRunnerLogger(true));
+    t.deepEqual(results, {});
+});
+ava_1.default("ensure lines of code can handle includes", async (t) => {
+    // note that "**" is always included. The includes are for extra
+    // directories outside the normal structure.
+    const results = await count_loc_1.countLoc(path.join(__dirname, "../tests/multi-language-repo"), ["../../src/testdata"], [], ["js"], logging_1.getRunnerLogger(true));
+    t.deepEqual(results, {
+        js: 15,
+    });
+});
+ava_1.default("ensure lines of code can handle exclude", async (t) => {
+    const results = await count_loc_1.countLoc(path.join(__dirname, "../tests/multi-language-repo"), [], ["**/*.py"], ["rb", "py"], logging_1.getRunnerLogger(true));
+    t.deepEqual(results, {
+        rb: 6,
+    });
+});
+//# sourceMappingURL=count-loc.test.js.map