ci: format

spec/diagnostic_spec.lua

@@ -0,0 +1,128 @@
+local helpers = require('spec.helpers')
+
+describe('diagnostic', function()
+  local diagnostic
+
+  before_each(function()
+    helpers.reset_config()
+    diagnostic = require('render.diagnostic')
+  end)
+
+  describe('clear', function()
+    it('clears diagnostics for a buffer', function()
+      local bufnr = helpers.create_buffer({ 'line1', 'line2' })
+      local ns = diagnostic.get_namespace()
+      vim.diagnostic.set(ns, bufnr, {
+        { lnum = 0, col = 0, message = 'test error', severity = vim.diagnostic.severity.ERROR },
+      })
+
+      local diags = vim.diagnostic.get(bufnr, { namespace = ns })
+      assert.are.equal(1, #diags)
+
+      diagnostic.clear(bufnr)
+
+      diags = vim.diagnostic.get(bufnr, { namespace = ns })
+      assert.are.equal(0, #diags)
+      helpers.delete_buffer(bufnr)
+    end)
+  end)
+
+  describe('set', function()
+    it('sets diagnostics from error_parser output', function()
+      local bufnr = helpers.create_buffer({ 'line1', 'line2' })
+      local ns = diagnostic.get_namespace()
+
+      local parser = function()
+        return {
+          { lnum = 0, col = 0, message = 'syntax error', severity = vim.diagnostic.severity.ERROR },
+        }
+      end
+
+      local ctx = { bufnr = bufnr, file = '/tmp/test.typ', root = '/tmp', ft = 'typst' }
+      diagnostic.set(bufnr, 'typst', parser, 'error on line 1', ctx)
+
+      local diags = vim.diagnostic.get(bufnr, { namespace = ns })
+      assert.are.equal(1, #diags)
+      assert.are.equal('syntax error', diags[1].message)
+      assert.are.equal('typst', diags[1].source)
+      helpers.delete_buffer(bufnr)
+    end)
+
+    it('sets source to provider name when not specified', function()
+      local bufnr = helpers.create_buffer({ 'line1' })
+      local ns = diagnostic.get_namespace()
+
+      local parser = function()
+        return {
+          { lnum = 0, col = 0, message = 'err', severity = vim.diagnostic.severity.ERROR },
+        }
+      end
+
+      local ctx = { bufnr = bufnr, file = '/tmp/test.tex', root = '/tmp', ft = 'tex' }
+      diagnostic.set(bufnr, 'latexmk', parser, 'error', ctx)
+
+      local diags = vim.diagnostic.get(bufnr, { namespace = ns })
+      assert.are.equal('latexmk', diags[1].source)
+      helpers.delete_buffer(bufnr)
+    end)
+
+    it('preserves existing source from parser', function()
+      local bufnr = helpers.create_buffer({ 'line1' })
+      local ns = diagnostic.get_namespace()
+
+      local parser = function()
+        return {
+          {
+            lnum = 0,
+            col = 0,
+            message = 'err',
+            severity = vim.diagnostic.severity.ERROR,
+            source = 'custom',
+          },
+        }
+      end
+
+      local ctx = { bufnr = bufnr, file = '/tmp/test.tex', root = '/tmp', ft = 'tex' }
+      diagnostic.set(bufnr, 'latexmk', parser, 'error', ctx)
+
+      local diags = vim.diagnostic.get(bufnr, { namespace = ns })
+      assert.are.equal('custom', diags[1].source)
+      helpers.delete_buffer(bufnr)
+    end)
+
+    it('handles parser failure gracefully', function()
+      local bufnr = helpers.create_buffer({ 'line1' })
+      local ns = diagnostic.get_namespace()
+
+      local parser = function()
+        error('parser exploded')
+      end
+
+      local ctx = { bufnr = bufnr, file = '/tmp/test.tex', root = '/tmp', ft = 'tex' }
+
+      assert.has_no.errors(function()
+        diagnostic.set(bufnr, 'latexmk', parser, 'error', ctx)
+      end)
+
+      local diags = vim.diagnostic.get(bufnr, { namespace = ns })
+      assert.are.equal(0, #diags)
+      helpers.delete_buffer(bufnr)
+    end)
+
+    it('does nothing when parser returns empty list', function()
+      local bufnr = helpers.create_buffer({ 'line1' })
+      local ns = diagnostic.get_namespace()
+
+      local parser = function()
+        return {}
+      end
+
+      local ctx = { bufnr = bufnr, file = '/tmp/test.tex', root = '/tmp', ft = 'tex' }
+      diagnostic.set(bufnr, 'latexmk', parser, 'error', ctx)
+
+      local diags = vim.diagnostic.get(bufnr, { namespace = ns })
+      assert.are.equal(0, #diags)
+      helpers.delete_buffer(bufnr)
+    end)
+  end)
+end)