add test for phasediff without magnitude1 warning

Author: olgn

tests/bids.spec.js

@@ -245,4 +245,26 @@ var suite = describe('BIDS example datasets ', function() {
       isdone()
     })
   })
+
+  it('should not throw a warning if all _phasediff.nii are associated with _magnitude1.nii', function(isdone) {
+    var options = { ignoreNiftiHeaders: true }
+    validate.BIDS(
+      'tests/data/BIDS-examples-' + test_version + '/hcp_example_bids',
+      options,
+      function(issues) {
+        assert.deepEqual(issues.errors, [])
+        isdone()
+      },
+    )
+  })
+
+  it('should throw a warning if there are _phasediff.nii without an associated _magnitude1.nii', function(isdone) {
+    var options = { ignoreNiftiHeaders: true }
+    validate.BIDS('tests/data/phasediff_without_magnitude1', options, function(
+      issues,
+    ) {
+      assert(issues.warnings.length == 2 && issues.warnings[1].code === '92')
+      isdone()
+    })
+  })
 })

tests/data/phasediff_without_magnitude1/dataset_description.json

@@ -0,0 +1,4 @@
+{
+  "BIDSVersion": "1.0.0rc3",
+  "Name": "7t_trt"
+}

tests/data/phasediff_without_magnitude1/participants.tsv

@@ -0,0 +1,2 @@
+participant_id	sex	age_at_first_scan_years	number_of_scans_before	handedness
+sub-01	F	29	17	100

tests/data/phasediff_without_magnitude1/sub-01/ses-1/anat/sub-01_ses-1_T1map.nii.gz

@@ -0,0 +1,5 @@
+{
+  "EchoTime2": 0.00702,
+  "EchoTime1": 0.006,
+  "IntendedFor": "ses-1/func/sub-01_ses-1_task-rest_acq-fullbrain_run-1_bold.nii.gz"
+}