test: add more tiff tag tests

blacha · Nov 26, 2023 · e9c8714 · e9c8714
1 parent 933db52
commit e9c8714
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Showing 2 changed files with 14 additions and 0 deletions.
diff --git a/packages/core/src/__test__/cog.image.test.ts b/packages/core/src/__test__/cog.image.test.ts
@@ -8,6 +8,7 @@ import { SourceMemory } from '../__benchmark__/source.memory.js';
 import { TiffMimeType } from '../const/tiff.mime.js';
 import { Tiff } from '../tiff.js';
 import { ByteSize } from '../util/bytes.js';
+import { Photometric, TiffTag } from '../const/tiff.tag.id.js';
 
 // 900913 properties.
 const A = 6378137.0;
@@ -133,6 +134,11 @@ describe('Cog.Sparse', () => {
     const { tileCount } = img;
     assert.deepEqual(tileCount, { x: 2, y: 2 });
 
+    assert.equal(img.value(TiffTag.SamplesPerPixel), 4); // 4 bands
+    assert.deepEqual(img.value(TiffTag.BitsPerSample), [8, 8, 8, 8]);
+    assert.equal(img.value(TiffTag.Photometric), Photometric.Rgb);
+    assert.equal(img.value(TiffTag.GdalNoData), null);
+
     for (let x = 0; x < tileCount.x; x++) {
       for (let y = 0; y < tileCount.y; y++) {
         const hasTile = await img.hasTile(x, y);

diff --git a/packages/core/src/__test__/cog.read.test.ts b/packages/core/src/__test__/cog.read.test.ts
@@ -6,6 +6,7 @@ import { TiffMimeType } from '../const/tiff.mime.js';
 import { TiffVersion } from '../const/tiff.version.js';
 import { TiffTag, TiffTagGeo } from '../index.js';
 import { Tiff } from '../tiff.js';
+import { Photometric, SampleFormat } from '../const/tiff.tag.id.js';
 
 function validate(tif: Tiff): void {
   assert.equal(tif.images.length, 5);
@@ -79,6 +80,12 @@ describe('CogRead', () => {
     assert.equal(im.epsg, 2193);
     assert.equal(im.compression, TiffMimeType.None);
     assert.equal(im.isTiled(), false);
+
+    // 32 bit float DEM
+    assert.deepEqual(im.value(TiffTag.BitsPerSample), 32);
+    assert.equal(im.value(TiffTag.SampleFormat), SampleFormat.Float);
+    assert.equal(im.value(TiffTag.Photometric), Photometric.MinIsBlack);
+
     assert.equal(im.tagsGeo.get(TiffTagGeo.GTCitationGeoKey), 'NZGD2000 / New Zealand Transverse Mercator 2000');
     assert.equal(im.tagsGeo.get(TiffTagGeo.GeodeticCitationGeoKey), 'NZGD2000');
     assert.deepEqual(await im.fetch(TiffTag.StripByteCounts), [8064, 8064, 8064, 8064, 8064, 8064, 8064, 5040]);
@@ -96,6 +103,7 @@ describe('CogRead', () => {
     assert.equal(im.isGeoTagsLoaded, true);
     assert.equal(im.epsg, 2193);
     assert.equal(im.compression, TiffMimeType.Lzw);
+    assert.deepEqual(im.value(TiffTag.BitsPerSample), [8, 8, 8, 8]);
 
     const geoTags = [...im.tagsGeo.keys()].map((key) => TiffTagGeo[key]);
     assert.deepEqual(geoTags, [