More unit tests

package.json

@@ -7,7 +7,7 @@
   "scripts": {
     "test": "npx ava test/*.js",
     "test:lint": "npx eslint src test && npx tslint 'typings/*.ts'",
-    "test:coverage": "npm run coverage && npx nyc check-coverage --lines 50 --functions 50 --branches 50",
+    "test:coverage": "npm run coverage && npx nyc check-coverage --lines 60 --functions 60 --branches 60",
     "coverage": "npx nyc npm test",
     "codacy": "npx nyc report --reporter=text-lcov | npx codacy-coverage",
     "docs": "npx jsdoc -c ./.docstrap.json -R README.md",

test/copy.js

@@ -12,6 +12,21 @@ ava('File to New File Location', async test => {
 	test.true(stats.isFile());
 });
 
+ava('File to Existing File', async test => {
+	const newFile = tempFile();
+	const file = tempFile();
+	await nextra.copy(file, newFile);
+
+	const stats = await fs.statAsync(newFile);
+	test.true(stats.isFile());
+});
+
+ava('File to Existing File w/ errorOnExist', async test => {
+	const newFile = tempFile();
+	const file = tempFile();
+	await test.throws(nextra.copy(file, newFile, { overwrite: false, errorOnExist: true }));
+});
+
 ava('File to Empty Directory', async test => {
 	const emptyDir = tempDir();
 	const file = tempFile();
@@ -50,6 +65,15 @@ ava('Symlink to Empty Directory', async test => {
 	test.true(stats.isSymbolicLink());
 });
 
+ava('Symlink to Existing Symlink', async test => {
+	const newfile = tempSymlink();
+	const symlink = tempSymlink();
+	await nextra.copy(symlink, newfile);
+
+	const stats = await fs.lstatAsync(newfile);
+	test.true(stats.isSymbolicLink());
+});
+
 ava('Duplicated Directories', async test => {
 	const dir = tempDir();
 	tempFile(dir);

test/createSymlink.js

@@ -29,6 +29,15 @@ ava('new file with non-existant directories', async test => {
 	test.true(stats.isSymbolicLink());
 });
 
+ava('relative source', async test => {
+	const file = './test/createSymlink.js';
+	const newfile = tempFileLoc();
+	await nextra.createSymlink(file, newfile);
+
+	const stats = await fs.lstatAsync(newfile);
+	test.true(stats.isSymbolicLink());
+});
+
 ava('new file (atomic shortcut)', async test => {
 	const file = tempFile();
 	const newfile = tempFileLoc();