add CI for unit tests (#1368)

* add CI for unit tests

* fix some tests that did not close their index

* increase delays for tests running via github actions

seems as though on the machines these tests run
sometimes by the time the cancel fires all the
results have been returned anyway in spite of
their delays

.github/workflows/tests.yml

@@ -0,0 +1,24 @@
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+name: Tests
+jobs:
+  test:
+    strategy:
+      matrix:
+        go-version: [1.13.x, 1.14.x]
+        platform: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v1
+      with:
+        go-version: ${{ matrix.go-version }}
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Test
+      run: |
+        go version
+        go test -race ./...

index_alias_impl_test.go

@@ -1013,7 +1013,7 @@ func TestIndexAliasMultipleLayer(t *testing.T) {
 			select {
 			case <-ctx.Done():
 				return ctx.Err()
-			case <-time.After(50 * time.Millisecond):
+			case <-time.After(250 * time.Millisecond):
 				return nil
 			}
 		},
@@ -1042,7 +1042,7 @@ func TestIndexAliasMultipleLayer(t *testing.T) {
 			select {
 			case <-ctx.Done():
 				return ctx.Err()
-			case <-time.After(50 * time.Millisecond):
+			case <-time.After(250 * time.Millisecond):
 				return nil
 			}
 		},

search_test.go

@@ -1558,7 +1558,11 @@ func TestSearchScoreNone(t *testing.T) {
 	}
 
 	defer func() {
-		err := os.RemoveAll("testidx")
+		err := idx.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = os.RemoveAll("testidx")
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -1609,7 +1613,11 @@ func TestGeoDistanceIssue1301(t *testing.T) {
 	}
 
 	defer func() {
-		err := os.RemoveAll("testidx")
+		err := idx.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = os.RemoveAll("testidx")
 		if err != nil {
 			t.Fatal(err)
 		}