diff --git a/test/fixtures/lib/index.js b/test/fixtures/lib/index.js
index 1fd9c38..8ecd600 100644
--- a/test/fixtures/lib/index.js
+++ b/test/fixtures/lib/index.js
@@ -45,3 +45,7 @@ require('deps-tsx-main-tsx'); // ../node_modules/deps-tsx-main-tsx, with "main":
 require('deps-vue');
 require('deps-vue-main');
 require('deps-vue-main-vue');
+
+require('deps-json');
+require('deps-json-main');
+require('deps-json-main-json');
diff --git a/test/fixtures/node_modules/deps-json-main-json/main.json b/test/fixtures/node_modules/deps-json-main-json/main.json
new file mode 100644
index 0000000..cdf0932
--- /dev/null
+++ b/test/fixtures/node_modules/deps-json-main-json/main.json
@@ -0,0 +1,3 @@
+{
+  "description": "Use <Ctrl-o> for back."
+}
diff --git a/test/fixtures/node_modules/deps-json-main-json/package.json b/test/fixtures/node_modules/deps-json-main-json/package.json
new file mode 100644
index 0000000..47fe49e
--- /dev/null
+++ b/test/fixtures/node_modules/deps-json-main-json/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "deps-json-main",
+  "main": "main.json"
+}
diff --git a/test/fixtures/node_modules/deps-json-main/main.json b/test/fixtures/node_modules/deps-json-main/main.json
new file mode 100644
index 0000000..cdf0932
--- /dev/null
+++ b/test/fixtures/node_modules/deps-json-main/main.json
@@ -0,0 +1,3 @@
+{
+  "description": "Use <Ctrl-o> for back."
+}
diff --git a/test/fixtures/node_modules/deps-json-main/package.json b/test/fixtures/node_modules/deps-json-main/package.json
new file mode 100644
index 0000000..12a6bfb
--- /dev/null
+++ b/test/fixtures/node_modules/deps-json-main/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "deps-json-main",
+  "main": "main"
+}
diff --git a/test/fixtures/node_modules/deps-json/index.json b/test/fixtures/node_modules/deps-json/index.json
new file mode 100644
index 0000000..cdf0932
--- /dev/null
+++ b/test/fixtures/node_modules/deps-json/index.json
@@ -0,0 +1,3 @@
+{
+  "description": "Use <Ctrl-o> for back."
+}
diff --git a/test/fixtures/node_modules/deps-json/package.json b/test/fixtures/node_modules/deps-json/package.json
new file mode 100644
index 0000000..77f39ad
--- /dev/null
+++ b/test/fixtures/node_modules/deps-json/package.json
@@ -0,0 +1,4 @@
+{
+  "name": "deps-json",
+  "description": "Without main, use default index.json"
+}