Add tests.

ql/test/query-tests/filters/ClassifyFiles/ClassifyFiles.expected

@@ -1,2 +1,4 @@
 | hello2.go:0:0:0:0 | hello2.go | generated |
 | hello.go:0:0:0:0 | hello.go | generated |
+| httptest.go:0:0:0:0 | httptest.go | test |
+| test1.go:0:0:0:0 | test1.go | test |

ql/test/query-tests/filters/ClassifyFiles/TestCase.expected

@@ -0,0 +1,6 @@
+| test1.go:5:1:5:26 | function declaration |
+| test1.go:7:1:7:27 | function declaration |
+| test1.go:15:1:15:31 | function declaration |
+| test1.go:17:1:17:32 | function declaration |
+| test1.go:25:1:25:17 | function declaration |
+| test1.go:27:1:27:18 | function declaration |

ql/test/query-tests/filters/ClassifyFiles/TestCase.ql

@@ -0,0 +1,4 @@
+import go
+
+from TestCase tc
+select tc

ql/test/query-tests/filters/ClassifyFiles/httptest.go

@@ -0,0 +1,5 @@
+package main
+
+import "net/http/httptest"
+
+func setup(server *httptest.Server) {}

ql/test/query-tests/filters/ClassifyFiles/test1.go

@@ -0,0 +1,31 @@
+package main
+
+import "testing"
+
+func Test(t *testing.T) {} // test case
+
+func Test2(t *testing.T) {} // test case
+
+func TestMustHaveSingleParameter(t *testing.T, b bool) {} // not a test case
+
+func TestParameterMustHaveCorrectType(b *testing.B) {} // not a test case
+
+func TestsDoNotLookLikeThis(t *testing.T) {} // not a test case
+
+func Benchmark(b *testing.B) {} // test case
+
+func Benchmark2(b *testing.B) {} // test case
+
+func BenchmarkMustHaveSingleParameter(b *testing.B, flag bool) {} // not a test case
+
+func BenchmarkParameterMustHaveCorrectType(t *testing.T) {} // not a test case
+
+func BenchmarksDoNotLookLikeThis(b *testing.B) {} // not a test case
+
+func Example() {} // test case
+
+func Example2() {} // test case
+
+func ExampleMustNotHaveParameter(t *testing.T) {} // not a test case
+
+func ExamplesDoNotLookLikeThis() {} // not a test case