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Author SHA1 Message Date
Jordan Orelli 7363c4b2c4 update example test for clarity 4 years ago

@ -8,6 +8,9 @@ import (
"github.com/jordanorelli/tea"
)
// testStartServer is a test that checks that the server can start. If this
// test passes, we retain a reference to the server for future tests to
// utilize.
type testStartServer struct {
Server *httptest.Server `tea:"save"`
}
@ -23,14 +26,16 @@ func (test *testStartServer) After(t *testing.T) {
test.Server.Close()
}
type testRequest struct {
// testHits sends a request to a hitcount server created in a previous test,
// checking that the number of hits returned matches what we expect.
type testHits struct {
Server *httptest.Server `tea:"load"`
path string
expect int
hits int
}
func (test *testRequest) Run(t *testing.T) {
func (test *testHits) Run(t *testing.T) {
client := test.Server.Client()
res, err := client.Get(test.Server.URL + test.path)
@ -44,50 +49,39 @@ func (test *testRequest) Run(t *testing.T) {
t.Fatalf("response at %s was not json: %v", test.path, err)
}
if body.Hits != test.expect {
t.Errorf("expected a count of %d but saw %d", test.expect, body.Hits)
if body.Hits != test.hits {
t.Errorf("expected a count of %d hits but saw %d instead", test.hits, body.Hits)
}
}
func TestServer(t *testing.T) {
type list []testRequest
// start with a root node that creates our test server
root := tea.New(&testStartServer{})
runSeries := func(node *tea.Tree, tests list) *tea.Tree {
for i := 0; i < len(tests); i++ {
node = node.Child(&tests[i])
}
return node
}
// add a child node: this test is run if the root test passes. If the root
// test is failed, this test and all of its descendents are logged as
// skipped.
one := root.Child(&testHits{path: "/alice", hits: 1})
runParallel := func(node *tea.Tree, tests list) {
for i := 0; i < len(tests); i++ {
node.Child(&tests[i])
}
}
// the effects of the first test create the initial state for the second test.
two := one.Child(&testHits{path: "/alice", hits: 2})
root := tea.New(&testStartServer{})
// since we have never visited /bob, we know that bob should only have one hit.
two.Child(&testHits{path: "/bob", hits: 1})
// but we could also run the exact same test off of the root, like so:
root.Child(&testHits{path: "/bob", hits: 1})
// since tests are values in tea, we can re-use the exact same test from
// different initial states by saving the test as a variable.
bob := &testHits{path: "/bob", hits: 1}
runSeries(root, list{
{path: "/users/alice", expect: 1},
{path: "/users/alice", expect: 2},
{path: "/users/alice", expect: 3},
{path: "/users/alice", expect: 4},
})
runSeries(root, list{
{path: "/users/bob", expect: 1},
{path: "/users/alice", expect: 1},
{path: "/users/alice", expect: 2},
{path: "/users/alice", expect: 3},
{path: "/users/bob", expect: 2},
})
runParallel(root, list{
{path: "/users/alice", expect: 1},
{path: "/users/alice", expect: 1},
{path: "/users/alice", expect: 1},
{path: "/users/alice", expect: 1},
})
// these two executions of the same test value are operating on different
// program states. Since they are not in the same sequence, they have no
// effect on one another, even though they're utilizing the same test
// value.
two.Child(bob)
root.Child(bob)
tea.Run(t, root)
}

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