Add test for line filter

test/examples/line_filter_test.exs

@@ -0,0 +1,49 @@
+defmodule LineFilterTest do
+  use ExUnit.Case, async: true
+
+  defmodule SomeSpec do
+    use ESpec
+
+    context "tests" do
+      it "example with tag", do: "example with tag"
+
+      context "context with tag" do
+        it do: "example"
+        it "example with tag", do: "example with tag"
+
+        context "context inside context" do
+          it do: "example"
+          it "example with tag", do: "example with tag"
+        end
+      end
+    end
+  end
+
+  test "runs specs within block at line 7" do
+    ESpec.Configuration.add([file_opts: [{Path.expand("./test/examples/line_filter_test.exs"), [line: 7]}]])
+
+    examples = ESpec.SuiteRunner.filter(SomeSpec.examples, ESpec.Configuration.all)
+    assert(Enum.count(examples) == 5)
+  end
+
+  test "runs specs within block at line 8" do
+    ESpec.Configuration.add([file_opts: [{Path.expand("./test/examples/line_filter_test.exs"), [line: 8]}]])
+
+    examples = ESpec.SuiteRunner.filter(SomeSpec.examples, ESpec.Configuration.all)
+    assert(Enum.count(examples) == 1)
+  end
+
+  test "runs specs within block at line 10" do
+    ESpec.Configuration.add([file_opts: [{Path.expand("./test/examples/line_filter_test.exs"), [line: 10]}]])
+
+    examples = ESpec.SuiteRunner.filter(SomeSpec.examples, ESpec.Configuration.all)
+    assert(Enum.count(examples) == 4)
+  end
+
+  test "runs specs within block at line 14" do
+    ESpec.Configuration.add([file_opts: [{Path.expand("./test/examples/line_filter_test.exs"), [line: 14]}]])
+
+    examples = ESpec.SuiteRunner.filter(SomeSpec.examples, ESpec.Configuration.all)
+    assert(Enum.count(examples) == 2)
+  end
+end