Implement basic API acceptance test

acceptance/acceptance_test.go

@@ -55,6 +55,15 @@ func TestWorkflows(t *testing.T) {
 	testscript.Run(t, testScriptParamsFor(tsEnv, "workflow"))
 }
 
+func TestAPI(t *testing.T) {
+	var tsEnv testScriptEnv
+	if err := tsEnv.fromEnv(); err != nil {
+		t.Fatal(err)
+	}
+
+	testscript.Run(t, testScriptParamsFor(tsEnv, "api"))
+}
+
 func testScriptParamsFor(tsEnv testScriptEnv, command string) testscript.Params {
 	var files []string
 	if tsEnv.script != "" {

acceptance/testdata/api/basic-graphql.txtar

@@ -0,0 +1,3 @@
+# Basic graphql request
+exec gh api graphql -f query='query { viewer { login } }'
+stdout '"login":'

acceptance/testdata/api/basic-rest.txtar

@@ -0,0 +1,3 @@
+# Basic REST request
+exec gh api /user
+stdout '"login":'